./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/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_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/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_83470c92-5d88-46a4-b5fa-70b755eb5bb2/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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- 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 15:17:43,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:17:43,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:17:43,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:17:43,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:17:43,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:17:43,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:17:43,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:17:43,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:17:43,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:17:43,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:17:43,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:17:43,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:17:43,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:17:43,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:17:43,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:17:43,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:17:43,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:17:43,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:17:43,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:17:43,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:17:43,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:17:43,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:17:43,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:17:43,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:17:43,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:17:43,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:17:43,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:17:43,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:17:43,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:17:43,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:17:43,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:17:43,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:17:43,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:17:43,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:17:43,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:17:43,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:17:43,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:17:43,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:17:43,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:17:43,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:17:43,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 15:17:43,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:17:43,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:17:43,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:17:43,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:17:43,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:17:43,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:17:43,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:17:43,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:17:43,360 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:17:43,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:17:43,360 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:17:43,360 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:17:43,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:17:43,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:17:43,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:17:43,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:17:43,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:17:43,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:17:43,361 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:17:43,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:17:43,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:17:43,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:17:43,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:17:43,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:17:43,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:17:43,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:17:43,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:17:43,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:17:43,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:17:43,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:17:43,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:17:43,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:17:43,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:17:43,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:17:43,364 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:17:43,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:17:43,365 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:17:43,365 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_83470c92-5d88-46a4-b5fa-70b755eb5bb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2022-12-13 15:17:43,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:17:43,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:17:43,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:17:43,551 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:17:43,552 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:17:43,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-12-13 15:17:46,169 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:17:46,303 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:17:46,304 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-12-13 15:17:46,308 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/data/9e31ed6f0/b27b2aca8af3494b81cda140cf36954b/FLAGf70218771 [2022-12-13 15:17:46,320 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/data/9e31ed6f0/b27b2aca8af3494b81cda140cf36954b [2022-12-13 15:17:46,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:17:46,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:17:46,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:17:46,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:17:46,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:17:46,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcee9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46, skipping insertion in model container [2022-12-13 15:17:46,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:17:46,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:17:46,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:17:46,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:17:46,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:17:46,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:17:46,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:17:46,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:17:46,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:17:46,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:17:46,508 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_83470c92-5d88-46a4-b5fa-70b755eb5bb2/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-12-13 15:17:46,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:17:46,518 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:17:46,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:17:46,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:17:46,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:17:46,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:17:46,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:17:46,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:17:46,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:17:46,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:17:46,540 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_83470c92-5d88-46a4-b5fa-70b755eb5bb2/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-12-13 15:17:46,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:17:46,553 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:17:46,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46 WrapperNode [2022-12-13 15:17:46,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:17:46,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:17:46,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:17:46,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:17:46,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,582 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-12-13 15:17:46,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:17:46,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:17:46,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:17:46,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:17:46,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,605 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:17:46,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:17:46,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:17:46,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:17:46,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (1/1) ... [2022-12-13 15:17:46,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:17:46,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:17:46,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:17:46,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:17:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:17:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 15:17:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 15:17:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 15:17:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 15:17:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:17:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:17:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:17:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:17:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:17:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:17:46,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:17:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:17:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:17:46,677 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 15:17:46,761 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:17:46,763 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:17:46,916 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:17:46,957 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:17:46,957 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:17:46,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:17:46 BoogieIcfgContainer [2022-12-13 15:17:46,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:17:46,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:17:46,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:17:46,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:17:46,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:17:46" (1/3) ... [2022-12-13 15:17:46,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b825f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:17:46, skipping insertion in model container [2022-12-13 15:17:46,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:17:46" (2/3) ... [2022-12-13 15:17:46,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b825f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:17:46, skipping insertion in model container [2022-12-13 15:17:46,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:17:46" (3/3) ... [2022-12-13 15:17:46,966 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-12-13 15:17:46,972 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:17:46,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:17:46,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 15:17:46,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:17:47,040 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 15:17:47,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 102 transitions, 220 flow [2022-12-13 15:17:47,103 INFO L130 PetriNetUnfolder]: 11/100 cut-off events. [2022-12-13 15:17:47,103 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:17:47,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 11/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 142 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2022-12-13 15:17:47,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 102 transitions, 220 flow [2022-12-13 15:17:47,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 81 transitions, 171 flow [2022-12-13 15:17:47,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:17:47,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 81 transitions, 171 flow [2022-12-13 15:17:47,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 81 transitions, 171 flow [2022-12-13 15:17:47,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 171 flow [2022-12-13 15:17:47,139 INFO L130 PetriNetUnfolder]: 10/81 cut-off events. [2022-12-13 15:17:47,140 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:17:47,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 81 events. 10/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 135 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2022-12-13 15:17:47,141 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2022-12-13 15:17:49,829 INFO L134 LiptonReduction]: Checked pairs total: 1642 [2022-12-13 15:17:49,829 INFO L136 LiptonReduction]: Total number of compositions: 87 [2022-12-13 15:17:49,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:17:49,844 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;@19a62ff8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:17:49,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 15:17:49,846 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-13 15:17:49,846 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:17:49,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:49,846 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 15:17:49,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 436046, now seen corresponding path program 1 times [2022-12-13 15:17:49,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:49,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430184077] [2022-12-13 15:17:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:50,012 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 15:17:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:50,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430184077] [2022-12-13 15:17:50,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430184077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:17:50,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:17:50,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:17:50,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187818173] [2022-12-13 15:17:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:17:50,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:17:50,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:50,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:17:50,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:17:50,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 189 [2022-12-13 15:17:50,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:50,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:50,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 189 [2022-12-13 15:17:50,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:50,126 INFO L130 PetriNetUnfolder]: 153/266 cut-off events. [2022-12-13 15:17:50,126 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 15:17:50,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 266 events. 153/266 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1044 event pairs, 57 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 480. Up to 241 conditions per place. [2022-12-13 15:17:50,128 INFO L137 encePairwiseOnDemand]: 178/189 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2022-12-13 15:17:50,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 127 flow [2022-12-13 15:17:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:17:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:17:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2022-12-13 15:17:50,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2022-12-13 15:17:50,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2022-12-13 15:17:50,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2022-12-13 15:17:50,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:50,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2022-12-13 15:17:50,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:50,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 15:17:50,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 15:17:50,150 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 47 flow. Second operand 3 states and 279 transitions. [2022-12-13 15:17:50,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 127 flow [2022-12-13 15:17:50,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:17:50,153 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 75 flow [2022-12-13 15:17:50,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2022-12-13 15:17:50,157 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2022-12-13 15:17:50,158 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 75 flow [2022-12-13 15:17:50,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:50,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:50,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:17:50,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:17:50,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash 13519007, now seen corresponding path program 1 times [2022-12-13 15:17:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:50,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370706056] [2022-12-13 15:17:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:50,269 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 15:17:50,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370706056] [2022-12-13 15:17:50,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370706056] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:17:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863064518] [2022-12-13 15:17:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:50,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:50,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:17:50,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:17:50,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:17:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:50,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:17:50,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:17:50,558 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 15:17:50,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:17:50,582 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 15:17:50,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863064518] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 15:17:50,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:17:50,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 6 [2022-12-13 15:17:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391331056] [2022-12-13 15:17:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:17:50,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:17:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:17:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:17:50,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 189 [2022-12-13 15:17:50,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:50,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:50,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 189 [2022-12-13 15:17:50,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:50,632 INFO L130 PetriNetUnfolder]: 116/203 cut-off events. [2022-12-13 15:17:50,632 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 15:17:50,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 203 events. 116/203 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 680 event pairs, 86 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 412. Up to 203 conditions per place. [2022-12-13 15:17:50,633 INFO L137 encePairwiseOnDemand]: 186/189 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2022-12-13 15:17:50,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 105 flow [2022-12-13 15:17:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:17:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:17:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-12-13 15:17:50,635 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4620811287477954 [2022-12-13 15:17:50,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-12-13 15:17:50,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-12-13 15:17:50,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:50,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-12-13 15:17:50,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:50,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 15:17:50,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 15:17:50,637 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 75 flow. Second operand 3 states and 262 transitions. [2022-12-13 15:17:50,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 105 flow [2022-12-13 15:17:50,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:17:50,638 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 66 flow [2022-12-13 15:17:50,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2022-12-13 15:17:50,639 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2022-12-13 15:17:50,639 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 66 flow [2022-12-13 15:17:50,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:50,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:50,639 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:17:50,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:17:50,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:50,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash 13519010, now seen corresponding path program 1 times [2022-12-13 15:17:50,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411856827] [2022-12-13 15:17:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:50,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:51,013 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 15:17:51,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:51,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411856827] [2022-12-13 15:17:51,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411856827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:17:51,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:17:51,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:17:51,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400392708] [2022-12-13 15:17:51,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:17:51,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:17:51,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:17:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:17:51,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 189 [2022-12-13 15:17:51,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:51,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:51,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 189 [2022-12-13 15:17:51,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:51,074 INFO L130 PetriNetUnfolder]: 99/174 cut-off events. [2022-12-13 15:17:51,075 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-12-13 15:17:51,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 174 events. 99/174 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 550 event pairs, 71 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 447. Up to 174 conditions per place. [2022-12-13 15:17:51,076 INFO L137 encePairwiseOnDemand]: 187/189 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2022-12-13 15:17:51,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 98 flow [2022-12-13 15:17:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:17:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:17:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2022-12-13 15:17:51,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4426807760141093 [2022-12-13 15:17:51,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2022-12-13 15:17:51,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2022-12-13 15:17:51,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:51,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2022-12-13 15:17:51,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:51,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 15:17:51,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 15:17:51,080 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 66 flow. Second operand 3 states and 251 transitions. [2022-12-13 15:17:51,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 98 flow [2022-12-13 15:17:51,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:17:51,081 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 63 flow [2022-12-13 15:17:51,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2022-12-13 15:17:51,081 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2022-12-13 15:17:51,081 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 63 flow [2022-12-13 15:17:51,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:51,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:51,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:17:51,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:17:51,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:51,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:51,082 INFO L85 PathProgramCache]: Analyzing trace with hash 13519009, now seen corresponding path program 1 times [2022-12-13 15:17:51,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:51,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107930680] [2022-12-13 15:17:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:51,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:17:51,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:51,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107930680] [2022-12-13 15:17:51,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107930680] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:17:51,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827132617] [2022-12-13 15:17:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:51,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:17:51,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:17:51,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:17:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:51,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:17:51,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:17:51,350 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 15:17:51,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:17:51,490 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 15:17:51,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827132617] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:17:51,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:17:51,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 15:17:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306908664] [2022-12-13 15:17:51,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:17:51,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:17:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:17:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:17:51,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2022-12-13 15:17:51,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 63 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:51,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:51,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2022-12-13 15:17:51,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:51,804 INFO L130 PetriNetUnfolder]: 259/444 cut-off events. [2022-12-13 15:17:51,804 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-13 15:17:51,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 444 events. 259/444 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1883 event pairs, 13 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 1133. Up to 227 conditions per place. [2022-12-13 15:17:51,807 INFO L137 encePairwiseOnDemand]: 181/189 looper letters, 66 selfloop transitions, 26 changer transitions 0/92 dead transitions. [2022-12-13 15:17:51,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 92 transitions, 468 flow [2022-12-13 15:17:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:17:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 15:17:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 920 transitions. [2022-12-13 15:17:51,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44252044252044254 [2022-12-13 15:17:51,819 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 920 transitions. [2022-12-13 15:17:51,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 920 transitions. [2022-12-13 15:17:51,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:51,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 920 transitions. [2022-12-13 15:17:51,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.63636363636364) internal successors, (920), 11 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:51,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 189.0) internal successors, (2268), 12 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:51,825 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 189.0) internal successors, (2268), 12 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:51,826 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 63 flow. Second operand 11 states and 920 transitions. [2022-12-13 15:17:51,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 92 transitions, 468 flow [2022-12-13 15:17:51,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 92 transitions, 467 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:17:51,827 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 312 flow [2022-12-13 15:17:51,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=312, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2022-12-13 15:17:51,828 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 16 predicate places. [2022-12-13 15:17:51,828 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 312 flow [2022-12-13 15:17:51,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:51,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:51,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:17:51,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:17:52,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:52,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash 13519008, now seen corresponding path program 1 times [2022-12-13 15:17:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:52,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053245463] [2022-12-13 15:17:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:52,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:52,110 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 15:17:52,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:52,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053245463] [2022-12-13 15:17:52,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053245463] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:17:52,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333546598] [2022-12-13 15:17:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:52,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:52,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:17:52,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:17:52,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:17:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:52,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:17:52,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:17:52,290 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 15:17:52,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:17:52,420 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 15:17:52,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333546598] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:17:52,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:17:52,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 15:17:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230089009] [2022-12-13 15:17:52,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:17:52,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:17:52,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:52,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:17:52,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:17:52,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2022-12-13 15:17:52,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 312 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:52,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:52,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2022-12-13 15:17:52,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:52,672 INFO L130 PetriNetUnfolder]: 288/513 cut-off events. [2022-12-13 15:17:52,672 INFO L131 PetriNetUnfolder]: For 942/942 co-relation queries the response was YES. [2022-12-13 15:17:52,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 513 events. 288/513 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2336 event pairs, 11 based on Foata normal form. 74/555 useless extension candidates. Maximal degree in co-relation 1869. Up to 243 conditions per place. [2022-12-13 15:17:52,675 INFO L137 encePairwiseOnDemand]: 181/189 looper letters, 57 selfloop transitions, 23 changer transitions 3/83 dead transitions. [2022-12-13 15:17:52,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 667 flow [2022-12-13 15:17:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:17:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:17:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 662 transitions. [2022-12-13 15:17:52,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43783068783068785 [2022-12-13 15:17:52,677 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 662 transitions. [2022-12-13 15:17:52,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 662 transitions. [2022-12-13 15:17:52,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:52,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 662 transitions. [2022-12-13 15:17:52,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.75) internal successors, (662), 8 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 15:17:52,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:52,681 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:52,681 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 312 flow. Second operand 8 states and 662 transitions. [2022-12-13 15:17:52,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 667 flow [2022-12-13 15:17:52,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 83 transitions, 619 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-12-13 15:17:52,688 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 468 flow [2022-12-13 15:17:52,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=468, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2022-12-13 15:17:52,689 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2022-12-13 15:17:52,689 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 468 flow [2022-12-13 15:17:52,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:52,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:52,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:17:52,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:17:52,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:52,890 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:52,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:52,890 INFO L85 PathProgramCache]: Analyzing trace with hash -993398791, now seen corresponding path program 1 times [2022-12-13 15:17:52,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:52,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331179259] [2022-12-13 15:17:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:53,004 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 15:17:53,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:53,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331179259] [2022-12-13 15:17:53,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331179259] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:17:53,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850468962] [2022-12-13 15:17:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:53,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:53,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:17:53,006 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:17:53,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:17:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:53,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:17:53,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:17:53,166 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 15:17:53,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:17:53,268 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 15:17:53,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850468962] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:17:53,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:17:53,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 8 [2022-12-13 15:17:53,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730202339] [2022-12-13 15:17:53,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:17:53,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:17:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:17:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:17:53,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 189 [2022-12-13 15:17:53,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 468 flow. Second operand has 9 states, 9 states have (on average 68.33333333333333) internal successors, (615), 9 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:53,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:53,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 189 [2022-12-13 15:17:53,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:53,509 INFO L130 PetriNetUnfolder]: 298/559 cut-off events. [2022-12-13 15:17:53,509 INFO L131 PetriNetUnfolder]: For 2158/2158 co-relation queries the response was YES. [2022-12-13 15:17:53,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 559 events. 298/559 cut-off events. For 2158/2158 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2652 event pairs, 23 based on Foata normal form. 144/703 useless extension candidates. Maximal degree in co-relation 2101. Up to 175 conditions per place. [2022-12-13 15:17:53,512 INFO L137 encePairwiseOnDemand]: 181/189 looper letters, 57 selfloop transitions, 28 changer transitions 2/87 dead transitions. [2022-12-13 15:17:53,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 87 transitions, 775 flow [2022-12-13 15:17:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:17:53,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:17:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 596 transitions. [2022-12-13 15:17:53,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2022-12-13 15:17:53,514 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 596 transitions. [2022-12-13 15:17:53,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 596 transitions. [2022-12-13 15:17:53,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:53,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 596 transitions. [2022-12-13 15:17:53,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:53,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:53,517 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:53,517 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 468 flow. Second operand 8 states and 596 transitions. [2022-12-13 15:17:53,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 87 transitions, 775 flow [2022-12-13 15:17:53,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 87 transitions, 753 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 15:17:53,523 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 611 flow [2022-12-13 15:17:53,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2022-12-13 15:17:53,523 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 32 predicate places. [2022-12-13 15:17:53,523 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 611 flow [2022-12-13 15:17:53,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 68.33333333333333) internal successors, (615), 9 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:53,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:53,524 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:17:53,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:17:53,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:53,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -993401578, now seen corresponding path program 1 times [2022-12-13 15:17:53,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:53,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457571913] [2022-12-13 15:17:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:53,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:53,915 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 15:17:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:53,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457571913] [2022-12-13 15:17:53,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457571913] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:17:53,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980318671] [2022-12-13 15:17:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:53,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:17:53,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:17:53,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:17:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:53,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:17:53,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:17:54,067 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 15:17:54,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:17:54,432 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 15:17:54,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980318671] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:17:54,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:17:54,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 15:17:54,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899052993] [2022-12-13 15:17:54,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:17:54,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:17:54,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:54,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:17:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:17:54,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 189 [2022-12-13 15:17:54,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 611 flow. Second operand has 11 states, 11 states have (on average 64.9090909090909) internal successors, (714), 11 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:54,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:54,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 189 [2022-12-13 15:17:54,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:55,066 INFO L130 PetriNetUnfolder]: 889/1524 cut-off events. [2022-12-13 15:17:55,066 INFO L131 PetriNetUnfolder]: For 7884/7884 co-relation queries the response was YES. [2022-12-13 15:17:55,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7511 conditions, 1524 events. 889/1524 cut-off events. For 7884/7884 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8237 event pairs, 23 based on Foata normal form. 66/1590 useless extension candidates. Maximal degree in co-relation 7485. Up to 573 conditions per place. [2022-12-13 15:17:55,075 INFO L137 encePairwiseOnDemand]: 180/189 looper letters, 96 selfloop transitions, 104 changer transitions 11/211 dead transitions. [2022-12-13 15:17:55,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 211 transitions, 2483 flow [2022-12-13 15:17:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:17:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 15:17:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1018 transitions. [2022-12-13 15:17:55,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3847316704459562 [2022-12-13 15:17:55,077 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1018 transitions. [2022-12-13 15:17:55,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1018 transitions. [2022-12-13 15:17:55,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:55,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1018 transitions. [2022-12-13 15:17:55,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.71428571428571) internal successors, (1018), 14 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:55,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:55,082 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:55,083 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 611 flow. Second operand 14 states and 1018 transitions. [2022-12-13 15:17:55,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 211 transitions, 2483 flow [2022-12-13 15:17:55,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 211 transitions, 2466 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 15:17:55,096 INFO L231 Difference]: Finished difference. Result has 75 places, 139 transitions, 2249 flow [2022-12-13 15:17:55,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2249, PETRI_PLACES=75, PETRI_TRANSITIONS=139} [2022-12-13 15:17:55,097 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2022-12-13 15:17:55,097 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 139 transitions, 2249 flow [2022-12-13 15:17:55,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 64.9090909090909) internal successors, (714), 11 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:55,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:55,098 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:17:55,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:17:55,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:55,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1173443139, now seen corresponding path program 1 times [2022-12-13 15:17:55,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:55,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631074313] [2022-12-13 15:17:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:55,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:17:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:55,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631074313] [2022-12-13 15:17:55,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631074313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:17:55,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:17:55,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:17:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571958928] [2022-12-13 15:17:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:17:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:17:55,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:55,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:17:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:17:55,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 189 [2022-12-13 15:17:55,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 139 transitions, 2249 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:55,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:55,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 189 [2022-12-13 15:17:55,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:55,618 INFO L130 PetriNetUnfolder]: 761/1346 cut-off events. [2022-12-13 15:17:55,618 INFO L131 PetriNetUnfolder]: For 13797/13797 co-relation queries the response was YES. [2022-12-13 15:17:55,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 1346 events. 761/1346 cut-off events. For 13797/13797 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7321 event pairs, 419 based on Foata normal form. 80/1426 useless extension candidates. Maximal degree in co-relation 8321. Up to 1346 conditions per place. [2022-12-13 15:17:55,626 INFO L137 encePairwiseOnDemand]: 187/189 looper letters, 120 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2022-12-13 15:17:55,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 121 transitions, 2164 flow [2022-12-13 15:17:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:17:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:17:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-12-13 15:17:55,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4620811287477954 [2022-12-13 15:17:55,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-12-13 15:17:55,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-12-13 15:17:55,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:55,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-12-13 15:17:55,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:55,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 15:17:55,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 15:17:55,629 INFO L175 Difference]: Start difference. First operand has 75 places, 139 transitions, 2249 flow. Second operand 3 states and 262 transitions. [2022-12-13 15:17:55,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 121 transitions, 2164 flow [2022-12-13 15:17:55,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 121 transitions, 1905 flow, removed 105 selfloop flow, removed 4 redundant places. [2022-12-13 15:17:55,661 INFO L231 Difference]: Finished difference. Result has 71 places, 121 transitions, 1665 flow [2022-12-13 15:17:55,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1665, PETRI_PLACES=71, PETRI_TRANSITIONS=121} [2022-12-13 15:17:55,661 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2022-12-13 15:17:55,662 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 121 transitions, 1665 flow [2022-12-13 15:17:55,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:55,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:55,662 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 15:17:55,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:17:55,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:55,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:55,662 INFO L85 PathProgramCache]: Analyzing trace with hash -651941565, now seen corresponding path program 1 times [2022-12-13 15:17:55,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:55,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201842327] [2022-12-13 15:17:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:17:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:55,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201842327] [2022-12-13 15:17:55,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201842327] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:17:55,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727879667] [2022-12-13 15:17:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:55,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:17:55,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:17:55,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:17:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:55,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 15:17:55,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:17:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:17:55,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:17:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:17:56,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727879667] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:17:56,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:17:56,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-12-13 15:17:56,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371590544] [2022-12-13 15:17:56,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:17:56,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:17:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:17:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:17:56,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 189 [2022-12-13 15:17:56,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 121 transitions, 1665 flow. Second operand has 14 states, 14 states have (on average 64.71428571428571) internal successors, (906), 14 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:56,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:56,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 189 [2022-12-13 15:17:56,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:57,019 INFO L130 PetriNetUnfolder]: 1429/2414 cut-off events. [2022-12-13 15:17:57,020 INFO L131 PetriNetUnfolder]: For 17008/17008 co-relation queries the response was YES. [2022-12-13 15:17:57,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13583 conditions, 2414 events. 1429/2414 cut-off events. For 17008/17008 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 13935 event pairs, 33 based on Foata normal form. 134/2548 useless extension candidates. Maximal degree in co-relation 13549. Up to 615 conditions per place. [2022-12-13 15:17:57,034 INFO L137 encePairwiseOnDemand]: 181/189 looper letters, 110 selfloop transitions, 197 changer transitions 20/327 dead transitions. [2022-12-13 15:17:57,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 327 transitions, 4631 flow [2022-12-13 15:17:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 15:17:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 15:17:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1136 transitions. [2022-12-13 15:17:57,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2022-12-13 15:17:57,037 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1136 transitions. [2022-12-13 15:17:57,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1136 transitions. [2022-12-13 15:17:57,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:57,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1136 transitions. [2022-12-13 15:17:57,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.0) internal successors, (1136), 16 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:57,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 189.0) internal successors, (3213), 17 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:57,041 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 189.0) internal successors, (3213), 17 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:57,042 INFO L175 Difference]: Start difference. First operand has 71 places, 121 transitions, 1665 flow. Second operand 16 states and 1136 transitions. [2022-12-13 15:17:57,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 327 transitions, 4631 flow [2022-12-13 15:17:57,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 327 transitions, 4553 flow, removed 37 selfloop flow, removed 2 redundant places. [2022-12-13 15:17:57,120 INFO L231 Difference]: Finished difference. Result has 95 places, 238 transitions, 4225 flow [2022-12-13 15:17:57,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4225, PETRI_PLACES=95, PETRI_TRANSITIONS=238} [2022-12-13 15:17:57,121 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 71 predicate places. [2022-12-13 15:17:57,121 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 238 transitions, 4225 flow [2022-12-13 15:17:57,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 64.71428571428571) internal successors, (906), 14 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:57,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:57,122 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 15:17:57,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:17:57,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:57,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1173446016, now seen corresponding path program 1 times [2022-12-13 15:17:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:57,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071585622] [2022-12-13 15:17:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:17:57,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:17:57,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071585622] [2022-12-13 15:17:57,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071585622] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:17:57,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340455520] [2022-12-13 15:17:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:57,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:17:57,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:17:57,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:17:57,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:17:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:17:57,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:17:57,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:17:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:17:57,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:17:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:17:57,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340455520] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:17:57,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:17:57,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 15:17:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767176884] [2022-12-13 15:17:57,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:17:57,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:17:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:17:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:17:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:17:58,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 189 [2022-12-13 15:17:58,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 238 transitions, 4225 flow. Second operand has 17 states, 17 states have (on average 64.58823529411765) internal successors, (1098), 17 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:58,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:17:58,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 189 [2022-12-13 15:17:58,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:17:59,466 INFO L130 PetriNetUnfolder]: 2297/3830 cut-off events. [2022-12-13 15:17:59,466 INFO L131 PetriNetUnfolder]: For 41114/41114 co-relation queries the response was YES. [2022-12-13 15:17:59,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25562 conditions, 3830 events. 2297/3830 cut-off events. For 41114/41114 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 23192 event pairs, 51 based on Foata normal form. 94/3924 useless extension candidates. Maximal degree in co-relation 25517. Up to 977 conditions per place. [2022-12-13 15:17:59,488 INFO L137 encePairwiseOnDemand]: 181/189 looper letters, 179 selfloop transitions, 327 changer transitions 61/567 dead transitions. [2022-12-13 15:17:59,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 567 transitions, 9458 flow [2022-12-13 15:17:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 15:17:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 15:17:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1989 transitions. [2022-12-13 15:17:59,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3758503401360544 [2022-12-13 15:17:59,492 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1989 transitions. [2022-12-13 15:17:59,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1989 transitions. [2022-12-13 15:17:59,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:17:59,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1989 transitions. [2022-12-13 15:17:59,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 71.03571428571429) internal successors, (1989), 28 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:59,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 189.0) internal successors, (5481), 29 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:59,500 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 189.0) internal successors, (5481), 29 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:59,501 INFO L175 Difference]: Start difference. First operand has 95 places, 238 transitions, 4225 flow. Second operand 28 states and 1989 transitions. [2022-12-13 15:17:59,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 567 transitions, 9458 flow [2022-12-13 15:17:59,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 567 transitions, 8830 flow, removed 306 selfloop flow, removed 4 redundant places. [2022-12-13 15:17:59,701 INFO L231 Difference]: Finished difference. Result has 129 places, 415 transitions, 7842 flow [2022-12-13 15:17:59,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7842, PETRI_PLACES=129, PETRI_TRANSITIONS=415} [2022-12-13 15:17:59,702 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 105 predicate places. [2022-12-13 15:17:59,702 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 415 transitions, 7842 flow [2022-12-13 15:17:59,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 64.58823529411765) internal successors, (1098), 17 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:17:59,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:17:59,702 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:17:59,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:17:59,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:17:59,904 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:17:59,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:17:59,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1176213610, now seen corresponding path program 2 times [2022-12-13 15:17:59,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:17:59,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377081453] [2022-12-13 15:17:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:17:59,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:17:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:00,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:00,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377081453] [2022-12-13 15:18:00,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377081453] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:18:00,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784890418] [2022-12-13 15:18:00,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:18:00,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:18:00,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:18:00,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:18:00,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:18:00,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:18:00,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:18:00,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 15:18:00,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:18:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:00,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:18:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:00,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784890418] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:18:00,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:18:00,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 14 [2022-12-13 15:18:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804930621] [2022-12-13 15:18:00,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:18:00,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:18:00,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:00,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:18:00,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:18:00,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 189 [2022-12-13 15:18:00,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 415 transitions, 7842 flow. Second operand has 16 states, 16 states have (on average 60.6875) internal successors, (971), 16 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:00,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:18:00,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 189 [2022-12-13 15:18:00,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:18:02,849 INFO L130 PetriNetUnfolder]: 3785/6430 cut-off events. [2022-12-13 15:18:02,849 INFO L131 PetriNetUnfolder]: For 76478/76478 co-relation queries the response was YES. [2022-12-13 15:18:02,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44233 conditions, 6430 events. 3785/6430 cut-off events. For 76478/76478 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 43887 event pairs, 63 based on Foata normal form. 148/6578 useless extension candidates. Maximal degree in co-relation 44177. Up to 1781 conditions per place. [2022-12-13 15:18:02,887 INFO L137 encePairwiseOnDemand]: 180/189 looper letters, 276 selfloop transitions, 638 changer transitions 63/977 dead transitions. [2022-12-13 15:18:02,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 977 transitions, 18387 flow [2022-12-13 15:18:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 15:18:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 15:18:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1600 transitions. [2022-12-13 15:18:02,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3527336860670194 [2022-12-13 15:18:02,892 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1600 transitions. [2022-12-13 15:18:02,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1600 transitions. [2022-12-13 15:18:02,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:18:02,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1600 transitions. [2022-12-13 15:18:02,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 66.66666666666667) internal successors, (1600), 24 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:02,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 189.0) internal successors, (4725), 25 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:02,922 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 189.0) internal successors, (4725), 25 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:02,922 INFO L175 Difference]: Start difference. First operand has 129 places, 415 transitions, 7842 flow. Second operand 24 states and 1600 transitions. [2022-12-13 15:18:02,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 977 transitions, 18387 flow [2022-12-13 15:18:03,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 977 transitions, 16684 flow, removed 810 selfloop flow, removed 12 redundant places. [2022-12-13 15:18:03,714 INFO L231 Difference]: Finished difference. Result has 152 places, 816 transitions, 16087 flow [2022-12-13 15:18:03,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=6804, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=16087, PETRI_PLACES=152, PETRI_TRANSITIONS=816} [2022-12-13 15:18:03,715 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 128 predicate places. [2022-12-13 15:18:03,715 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 816 transitions, 16087 flow [2022-12-13 15:18:03,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 60.6875) internal successors, (971), 16 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:03,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:18:03,715 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-12-13 15:18:03,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 15:18:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:18:03,917 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:18:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2016997331, now seen corresponding path program 2 times [2022-12-13 15:18:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:03,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81389520] [2022-12-13 15:18:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:04,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:04,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81389520] [2022-12-13 15:18:04,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81389520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:18:04,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122621475] [2022-12-13 15:18:04,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:18:04,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:18:04,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:18:04,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:18:04,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 15:18:04,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:18:04,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:18:04,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 15:18:04,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:18:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:04,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:18:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:18:04,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122621475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:18:04,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:18:04,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 11 [2022-12-13 15:18:04,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284702255] [2022-12-13 15:18:04,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:18:04,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:18:04,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:04,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:18:04,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:18:04,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 189 [2022-12-13 15:18:04,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 816 transitions, 16087 flow. Second operand has 12 states, 12 states have (on average 72.41666666666667) internal successors, (869), 12 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 15:18:04,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:18:04,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 189 [2022-12-13 15:18:04,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:18:05,859 INFO L130 PetriNetUnfolder]: 2972/5447 cut-off events. [2022-12-13 15:18:05,859 INFO L131 PetriNetUnfolder]: For 84448/84448 co-relation queries the response was YES. [2022-12-13 15:18:05,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40506 conditions, 5447 events. 2972/5447 cut-off events. For 84448/84448 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 39775 event pairs, 327 based on Foata normal form. 570/6017 useless extension candidates. Maximal degree in co-relation 40445. Up to 2517 conditions per place. [2022-12-13 15:18:05,886 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 324 selfloop transitions, 317 changer transitions 121/762 dead transitions. [2022-12-13 15:18:05,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 762 transitions, 15893 flow [2022-12-13 15:18:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:18:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:18:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 610 transitions. [2022-12-13 15:18:05,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40343915343915343 [2022-12-13 15:18:05,887 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 610 transitions. [2022-12-13 15:18:05,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 610 transitions. [2022-12-13 15:18:05,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:18:05,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 610 transitions. [2022-12-13 15:18:05,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.25) internal successors, (610), 8 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:05,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:05,889 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:05,889 INFO L175 Difference]: Start difference. First operand has 152 places, 816 transitions, 16087 flow. Second operand 8 states and 610 transitions. [2022-12-13 15:18:05,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 762 transitions, 15893 flow [2022-12-13 15:18:06,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 762 transitions, 15209 flow, removed 252 selfloop flow, removed 6 redundant places. [2022-12-13 15:18:06,379 INFO L231 Difference]: Finished difference. Result has 153 places, 599 transitions, 12287 flow [2022-12-13 15:18:06,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=12892, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12287, PETRI_PLACES=153, PETRI_TRANSITIONS=599} [2022-12-13 15:18:06,380 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 129 predicate places. [2022-12-13 15:18:06,380 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 599 transitions, 12287 flow [2022-12-13 15:18:06,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.41666666666667) internal successors, (869), 12 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 15:18:06,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:18:06,380 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-13 15:18:06,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 15:18:06,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 15:18:06,581 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:18:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2100203591, now seen corresponding path program 2 times [2022-12-13 15:18:06,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:06,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388666351] [2022-12-13 15:18:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:06,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:06,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:06,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388666351] [2022-12-13 15:18:06,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388666351] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:18:06,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348847046] [2022-12-13 15:18:06,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:18:06,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:18:06,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:18:06,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:18:06,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 15:18:06,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:18:06,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:18:06,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 15:18:06,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:18:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:18:07,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:18:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:07,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348847046] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:18:07,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:18:07,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 17 [2022-12-13 15:18:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488731561] [2022-12-13 15:18:07,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:18:07,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 15:18:07,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 15:18:07,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=217, Unknown=0, NotChecked=0, Total=342 [2022-12-13 15:18:07,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 189 [2022-12-13 15:18:07,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 599 transitions, 12287 flow. Second operand has 19 states, 19 states have (on average 64.57894736842105) internal successors, (1227), 19 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:07,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:18:07,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 189 [2022-12-13 15:18:07,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:18:10,305 INFO L130 PetriNetUnfolder]: 4193/7966 cut-off events. [2022-12-13 15:18:10,305 INFO L131 PetriNetUnfolder]: For 95891/95891 co-relation queries the response was YES. [2022-12-13 15:18:10,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61942 conditions, 7966 events. 4193/7966 cut-off events. For 95891/95891 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 64126 event pairs, 349 based on Foata normal form. 184/8150 useless extension candidates. Maximal degree in co-relation 61883. Up to 1965 conditions per place. [2022-12-13 15:18:10,353 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 339 selfloop transitions, 757 changer transitions 91/1187 dead transitions. [2022-12-13 15:18:10,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 1187 transitions, 25575 flow [2022-12-13 15:18:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:18:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 15:18:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1404 transitions. [2022-12-13 15:18:10,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2022-12-13 15:18:10,356 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1404 transitions. [2022-12-13 15:18:10,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1404 transitions. [2022-12-13 15:18:10,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:18:10,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1404 transitions. [2022-12-13 15:18:10,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 70.2) internal successors, (1404), 20 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:10,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 189.0) internal successors, (3969), 21 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:10,364 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 189.0) internal successors, (3969), 21 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:10,364 INFO L175 Difference]: Start difference. First operand has 153 places, 599 transitions, 12287 flow. Second operand 20 states and 1404 transitions. [2022-12-13 15:18:10,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 1187 transitions, 25575 flow [2022-12-13 15:18:11,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1187 transitions, 24165 flow, removed 78 selfloop flow, removed 11 redundant places. [2022-12-13 15:18:11,739 INFO L231 Difference]: Finished difference. Result has 171 places, 998 transitions, 22813 flow [2022-12-13 15:18:11,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=11336, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=22813, PETRI_PLACES=171, PETRI_TRANSITIONS=998} [2022-12-13 15:18:11,741 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2022-12-13 15:18:11,741 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 998 transitions, 22813 flow [2022-12-13 15:18:11,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.57894736842105) internal successors, (1227), 19 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:11,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:18:11,742 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-12-13 15:18:11,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 15:18:11,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:18:11,942 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:18:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1980799994, now seen corresponding path program 2 times [2022-12-13 15:18:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:11,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322660330] [2022-12-13 15:18:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:12,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322660330] [2022-12-13 15:18:12,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322660330] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:18:12,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847313929] [2022-12-13 15:18:12,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:18:12,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:18:12,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:18:12,337 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:18:12,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 15:18:12,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:18:12,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:18:12,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 15:18:12,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:18:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:12,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:18:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:18:13,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847313929] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:18:13,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:18:13,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 19 [2022-12-13 15:18:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406746108] [2022-12-13 15:18:13,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:18:13,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 15:18:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 15:18:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:18:13,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 189 [2022-12-13 15:18:13,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 998 transitions, 22813 flow. Second operand has 20 states, 20 states have (on average 60.6) internal successors, (1212), 20 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:13,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:18:13,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 189 [2022-12-13 15:18:13,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:18:17,623 INFO L130 PetriNetUnfolder]: 5364/10629 cut-off events. [2022-12-13 15:18:17,623 INFO L131 PetriNetUnfolder]: For 131383/131383 co-relation queries the response was YES. [2022-12-13 15:18:17,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85050 conditions, 10629 events. 5364/10629 cut-off events. For 131383/131383 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 94054 event pairs, 200 based on Foata normal form. 468/11097 useless extension candidates. Maximal degree in co-relation 84987. Up to 2661 conditions per place. [2022-12-13 15:18:17,682 INFO L137 encePairwiseOnDemand]: 181/189 looper letters, 284 selfloop transitions, 1035 changer transitions 191/1510 dead transitions. [2022-12-13 15:18:17,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 1510 transitions, 35540 flow [2022-12-13 15:18:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 15:18:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 15:18:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1832 transitions. [2022-12-13 15:18:17,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34618291761148906 [2022-12-13 15:18:17,684 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1832 transitions. [2022-12-13 15:18:17,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1832 transitions. [2022-12-13 15:18:17,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:18:17,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1832 transitions. [2022-12-13 15:18:17,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 65.42857142857143) internal successors, (1832), 28 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:17,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 189.0) internal successors, (5481), 29 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:17,690 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 189.0) internal successors, (5481), 29 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:17,690 INFO L175 Difference]: Start difference. First operand has 171 places, 998 transitions, 22813 flow. Second operand 28 states and 1832 transitions. [2022-12-13 15:18:17,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 1510 transitions, 35540 flow [2022-12-13 15:18:19,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 1510 transitions, 33900 flow, removed 80 selfloop flow, removed 9 redundant places. [2022-12-13 15:18:19,274 INFO L231 Difference]: Finished difference. Result has 199 places, 1235 transitions, 30725 flow [2022-12-13 15:18:19,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=19442, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=892, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=722, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=30725, PETRI_PLACES=199, PETRI_TRANSITIONS=1235} [2022-12-13 15:18:19,275 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 175 predicate places. [2022-12-13 15:18:19,275 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 1235 transitions, 30725 flow [2022-12-13 15:18:19,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 60.6) internal successors, (1212), 20 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:19,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:18:19,276 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2022-12-13 15:18:19,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 15:18:19,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:18:19,477 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 15:18:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1387248973, now seen corresponding path program 3 times [2022-12-13 15:18:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:19,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220798766] [2022-12-13 15:18:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:19,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:19,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220798766] [2022-12-13 15:18:19,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220798766] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:18:19,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856347830] [2022-12-13 15:18:19,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:18:19,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:18:19,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:18:19,962 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:18:19,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 15:18:20,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 15:18:20,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:18:20,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 15:18:20,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:18:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:20,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:18:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:18:20,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856347830] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:18:20,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:18:20,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 20 [2022-12-13 15:18:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732738590] [2022-12-13 15:18:20,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:18:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:18:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:18:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2022-12-13 15:18:20,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 189 [2022-12-13 15:18:20,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1235 transitions, 30725 flow. Second operand has 21 states, 21 states have (on average 59.666666666666664) internal successors, (1253), 21 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:20,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:18:20,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 189 [2022-12-13 15:18:20,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:18:23,876 INFO L130 PetriNetUnfolder]: 3388/6691 cut-off events. [2022-12-13 15:18:23,876 INFO L131 PetriNetUnfolder]: For 101735/101735 co-relation queries the response was YES. [2022-12-13 15:18:23,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60719 conditions, 6691 events. 3388/6691 cut-off events. For 101735/101735 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 54447 event pairs, 18 based on Foata normal form. 860/7551 useless extension candidates. Maximal degree in co-relation 60651. Up to 2552 conditions per place. [2022-12-13 15:18:23,910 INFO L137 encePairwiseOnDemand]: 181/189 looper letters, 0 selfloop transitions, 0 changer transitions 1317/1317 dead transitions. [2022-12-13 15:18:23,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1317 transitions, 35800 flow [2022-12-13 15:18:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:18:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:18:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 635 transitions. [2022-12-13 15:18:23,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.335978835978836 [2022-12-13 15:18:23,911 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 635 transitions. [2022-12-13 15:18:23,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 635 transitions. [2022-12-13 15:18:23,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:18:23,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 635 transitions. [2022-12-13 15:18:23,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.5) internal successors, (635), 10 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:23,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:23,914 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:23,914 INFO L175 Difference]: Start difference. First operand has 199 places, 1235 transitions, 30725 flow. Second operand 10 states and 635 transitions. [2022-12-13 15:18:23,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1317 transitions, 35800 flow [2022-12-13 15:18:24,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 1317 transitions, 30231 flow, removed 792 selfloop flow, removed 16 redundant places. [2022-12-13 15:18:24,991 INFO L231 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2022-12-13 15:18:24,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=21541, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=169, PETRI_TRANSITIONS=0} [2022-12-13 15:18:24,992 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 145 predicate places. [2022-12-13 15:18:24,992 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2022-12-13 15:18:24,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 59.666666666666664) internal successors, (1253), 21 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:18:24,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-12-13 15:18:24,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-13 15:18:24,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 15:18:24,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 15:18:24,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 15:18:24,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 15:18:24,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 15:18:24,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 15:18:24,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 15:18:24,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 15:18:25,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 15:18:25,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 15:18:25,199 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 15:18:25,216 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:18:25,216 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:18:25,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:18:25 BasicIcfg [2022-12-13 15:18:25,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:18:25,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:18:25,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:18:25,230 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:18:25,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:17:46" (3/4) ... [2022-12-13 15:18:25,237 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 15:18:25,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 15:18:25,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 15:18:25,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-12-13 15:18:25,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 15:18:25,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 15:18:25,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 15:18:25,280 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:18:25,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:18:25,280 INFO L158 Benchmark]: Toolchain (without parser) took 38956.21ms. Allocated memory was 140.5MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 106.6MB in the beginning and 243.1MB in the end (delta: -136.5MB). Peak memory consumption was 822.0MB. Max. memory is 16.1GB. [2022-12-13 15:18:25,280 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:18:25,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.40ms. Allocated memory is still 140.5MB. Free memory was 106.1MB in the beginning and 94.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 15:18:25,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.56ms. Allocated memory is still 140.5MB. Free memory was 94.2MB in the beginning and 92.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:18:25,281 INFO L158 Benchmark]: Boogie Preprocessor took 24.68ms. Allocated memory is still 140.5MB. Free memory was 92.6MB in the beginning and 91.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:18:25,282 INFO L158 Benchmark]: RCFGBuilder took 350.83ms. Allocated memory is still 140.5MB. Free memory was 91.5MB in the beginning and 74.8MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 15:18:25,282 INFO L158 Benchmark]: TraceAbstraction took 38266.57ms. Allocated memory was 140.5MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 74.3MB in the beginning and 246.4MB in the end (delta: -172.1MB). Peak memory consumption was 966.7MB. Max. memory is 16.1GB. [2022-12-13 15:18:25,282 INFO L158 Benchmark]: Witness Printer took 50.92ms. Allocated memory is still 1.1GB. Free memory was 246.4MB in the beginning and 243.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 15:18:25,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.40ms. Allocated memory is still 140.5MB. Free memory was 106.1MB in the beginning and 94.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.56ms. Allocated memory is still 140.5MB. Free memory was 94.2MB in the beginning and 92.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.68ms. Allocated memory is still 140.5MB. Free memory was 92.6MB in the beginning and 91.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 350.83ms. Allocated memory is still 140.5MB. Free memory was 91.5MB in the beginning and 74.8MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 38266.57ms. Allocated memory was 140.5MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 74.3MB in the beginning and 246.4MB in the end (delta: -172.1MB). Peak memory consumption was 966.7MB. Max. memory is 16.1GB. * Witness Printer took 50.92ms. Allocated memory is still 1.1GB. Free memory was 246.4MB in the beginning and 243.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 78 PlacesBefore, 24 PlacesAfterwards, 81 TransitionsBefore, 19 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 87 TotalNumberOfCompositions, 1642 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1574, independent: 1567, independent conditional: 0, independent unconditional: 1567, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 734, independent: 728, independent conditional: 0, independent unconditional: 728, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1574, independent: 839, independent conditional: 0, independent unconditional: 839, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 734, unknown conditional: 0, unknown unconditional: 734] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 128 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 38.1s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 24.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2589 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2419 mSDsluCounter, 945 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 914 mSDsCounter, 808 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3525 IncrementalHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 808 mSolverCounterUnsat, 31 mSDtfsCounter, 3525 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30725occurred in iteration=14, InterpolantAutomatonStates: 187, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 3317 SizeOfPredicates, 78 NumberOfNonLiveVariables, 1048 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 39 InterpolantComputations, 4 PerfectInterpolantSequences, 34/155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 15:18:25,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83470c92-5d88-46a4-b5fa-70b755eb5bb2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE