./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.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_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/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_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/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_3885fa16-ba54-4133-85a1-d589513682bb/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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- 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 19:26:38,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:26:38,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:26:38,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:26:38,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:26:38,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:26:38,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:26:38,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:26:38,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:26:38,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:26:38,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:26:38,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:26:38,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:26:38,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:26:38,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:26:38,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:26:38,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:26:38,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:26:38,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:26:38,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:26:38,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:26:38,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:26:38,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:26:38,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:26:38,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:26:38,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:26:38,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:26:38,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:26:38,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:26:38,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:26:38,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:26:38,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:26:38,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:26:38,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:26:38,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:26:38,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:26:38,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:26:38,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:26:38,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:26:38,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:26:38,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:26:38,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:26:38,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:26:38,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:26:38,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:26:38,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:26:38,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:26:38,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:26:38,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:26:38,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:26:38,391 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:26:38,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:26:38,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:26:38,392 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:26:38,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:26:38,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:26:38,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:26:38,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:26:38,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:26:38,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:26:38,393 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:26:38,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:26:38,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:26:38,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:26:38,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:26:38,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:26:38,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:26:38,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:26:38,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:26:38,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:26:38,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:26:38,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:26:38,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:26:38,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:26:38,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:26:38,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:26:38,396 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:26:38,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:26:38,396 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:26:38,396 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_3885fa16-ba54-4133-85a1-d589513682bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-12-13 19:26:38,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:26:38,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:26:38,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:26:38,584 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:26:38,585 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:26:38,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-12-13 19:26:41,098 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:26:41,222 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:26:41,223 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-12-13 19:26:41,227 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/data/7bb25cd3e/415e88dcac90448eb36ae7e81d2449d1/FLAGeaecac755 [2022-12-13 19:26:41,240 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/data/7bb25cd3e/415e88dcac90448eb36ae7e81d2449d1 [2022-12-13 19:26:41,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:26:41,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:26:41,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:26:41,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:26:41,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:26:41,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18da0ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41, skipping insertion in model container [2022-12-13 19:26:41,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:26:41,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:26:41,396 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_3885fa16-ba54-4133-85a1-d589513682bb/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-12-13 19:26:41,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:26:41,407 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:26:41,420 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_3885fa16-ba54-4133-85a1-d589513682bb/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-12-13 19:26:41,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:26:41,433 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:26:41,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41 WrapperNode [2022-12-13 19:26:41,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:26:41,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:26:41,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:26:41,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:26:41,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,463 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 116 [2022-12-13 19:26:41,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:26:41,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:26:41,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:26:41,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:26:41,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:26:41,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:26:41,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:26:41,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:26:41,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (1/1) ... [2022-12-13 19:26:41,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:26:41,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:41,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:41,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:26:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:26:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:26:41,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:26:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:26:41,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:26:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:26:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:26:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:26:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:26:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:26:41,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:26:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:26:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:26:41,549 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 19:26:41,637 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:26:41,640 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:26:41,885 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:26:41,894 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:26:41,894 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 19:26:41,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:26:41 BoogieIcfgContainer [2022-12-13 19:26:41,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:26:41,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:26:41,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:26:41,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:26:41,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:26:41" (1/3) ... [2022-12-13 19:26:41,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710bcce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:26:41, skipping insertion in model container [2022-12-13 19:26:41,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:41" (2/3) ... [2022-12-13 19:26:41,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710bcce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:26:41, skipping insertion in model container [2022-12-13 19:26:41,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:26:41" (3/3) ... [2022-12-13 19:26:41,904 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-12-13 19:26:41,912 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:26:41,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:26:41,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 19:26:41,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:26:41,978 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:26:42,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-12-13 19:26:42,062 INFO L130 PetriNetUnfolder]: 15/187 cut-off events. [2022-12-13 19:26:42,062 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:26:42,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 166 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2022-12-13 19:26:42,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 189 transitions, 394 flow [2022-12-13 19:26:42,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 168 transitions, 345 flow [2022-12-13 19:26:42,073 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:26:42,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 168 transitions, 345 flow [2022-12-13 19:26:42,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 168 transitions, 345 flow [2022-12-13 19:26:42,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 168 transitions, 345 flow [2022-12-13 19:26:42,106 INFO L130 PetriNetUnfolder]: 14/168 cut-off events. [2022-12-13 19:26:42,106 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:26:42,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 168 events. 14/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2022-12-13 19:26:42,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 1400 [2022-12-13 19:26:46,211 INFO L134 LiptonReduction]: Checked pairs total: 1833 [2022-12-13 19:26:46,211 INFO L136 LiptonReduction]: Total number of compositions: 186 [2022-12-13 19:26:46,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:26:46,226 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;@64bad8f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:26:46,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-13 19:26:46,227 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 19:26:46,228 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:26:46,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:46,228 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:26:46,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:46,232 INFO L85 PathProgramCache]: Analyzing trace with hash 22414, now seen corresponding path program 1 times [2022-12-13 19:26:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:46,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473158252] [2022-12-13 19:26:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:46,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:46,419 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 19:26:46,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:46,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473158252] [2022-12-13 19:26:46,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473158252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:46,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:46,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:26:46,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492676796] [2022-12-13 19:26:46,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:46,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:26:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:46,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:26:46,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:26:46,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 375 [2022-12-13 19:26:46,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:46,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:46,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 375 [2022-12-13 19:26:46,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:46,576 INFO L130 PetriNetUnfolder]: 181/307 cut-off events. [2022-12-13 19:26:46,576 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 19:26:46,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 307 events. 181/307 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1036 event pairs, 114 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 270. Up to 157 conditions per place. [2022-12-13 19:26:46,578 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2022-12-13 19:26:46,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 45 transitions, 198 flow [2022-12-13 19:26:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:26:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2022-12-13 19:26:46,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49422222222222223 [2022-12-13 19:26:46,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2022-12-13 19:26:46,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2022-12-13 19:26:46,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:46,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2022-12-13 19:26:46,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:46,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:46,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:46,601 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 59 flow. Second operand 3 states and 556 transitions. [2022-12-13 19:26:46,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 45 transitions, 198 flow [2022-12-13 19:26:46,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 19:26:46,605 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 90 flow [2022-12-13 19:26:46,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2022-12-13 19:26:46,609 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2022-12-13 19:26:46,609 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 90 flow [2022-12-13 19:26:46,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:46,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:46,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:26:46,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:26:46,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash 695549, now seen corresponding path program 1 times [2022-12-13 19:26:46,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:46,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071800829] [2022-12-13 19:26:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:46,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:46,678 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 19:26:46,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:46,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071800829] [2022-12-13 19:26:46,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071800829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:46,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398050209] [2022-12-13 19:26:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:46,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:46,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:46,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:46,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:26:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:46,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:26:46,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:46,775 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 19:26:46,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:26:46,789 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 19:26:46,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398050209] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:26:46,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:26:46,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 19:26:46,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520811225] [2022-12-13 19:26:46,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:26:46,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:26:46,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:46,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:26:46,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:26:46,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 375 [2022-12-13 19:26:46,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:46,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:46,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 375 [2022-12-13 19:26:46,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:47,079 INFO L130 PetriNetUnfolder]: 457/766 cut-off events. [2022-12-13 19:26:47,079 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:26:47,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 766 events. 457/766 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3160 event pairs, 285 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 1255. Up to 155 conditions per place. [2022-12-13 19:26:47,083 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 90 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2022-12-13 19:26:47,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 111 transitions, 530 flow [2022-12-13 19:26:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:26:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:26:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1300 transitions. [2022-12-13 19:26:47,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2022-12-13 19:26:47,091 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1300 transitions. [2022-12-13 19:26:47,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1300 transitions. [2022-12-13 19:26:47,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:47,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1300 transitions. [2022-12-13 19:26:47,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,098 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,098 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 90 flow. Second operand 7 states and 1300 transitions. [2022-12-13 19:26:47,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 111 transitions, 530 flow [2022-12-13 19:26:47,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 111 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:26:47,100 INFO L231 Difference]: Finished difference. Result has 35 places, 43 transitions, 221 flow [2022-12-13 19:26:47,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=35, PETRI_TRANSITIONS=43} [2022-12-13 19:26:47,101 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2022-12-13 19:26:47,101 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 43 transitions, 221 flow [2022-12-13 19:26:47,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:47,102 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 19:26:47,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:47,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:47,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash 21562702, now seen corresponding path program 1 times [2022-12-13 19:26:47,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:47,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210883838] [2022-12-13 19:26:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:47,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:47,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:47,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210883838] [2022-12-13 19:26:47,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210883838] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:47,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332047796] [2022-12-13 19:26:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:47,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:47,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:47,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:47,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:26:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:47,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:26:47,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:47,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:26:47,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332047796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:47,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:26:47,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 19:26:47,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194910615] [2022-12-13 19:26:47,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:47,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:26:47,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:47,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:26:47,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:26:47,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 375 [2022-12-13 19:26:47,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 43 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:47,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 375 [2022-12-13 19:26:47,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:47,620 INFO L130 PetriNetUnfolder]: 451/758 cut-off events. [2022-12-13 19:26:47,620 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:26:47,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 758 events. 451/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3240 event pairs, 285 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 956. Up to 454 conditions per place. [2022-12-13 19:26:47,624 INFO L137 encePairwiseOnDemand]: 369/375 looper letters, 60 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2022-12-13 19:26:47,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 69 transitions, 381 flow [2022-12-13 19:26:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:26:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:26:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 912 transitions. [2022-12-13 19:26:47,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4864 [2022-12-13 19:26:47,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 912 transitions. [2022-12-13 19:26:47,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 912 transitions. [2022-12-13 19:26:47,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:47,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 912 transitions. [2022-12-13 19:26:47,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.4) internal successors, (912), 5 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,630 INFO L175 Difference]: Start difference. First operand has 35 places, 43 transitions, 221 flow. Second operand 5 states and 912 transitions. [2022-12-13 19:26:47,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 69 transitions, 381 flow [2022-12-13 19:26:47,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 69 transitions, 362 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 19:26:47,633 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 166 flow [2022-12-13 19:26:47,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2022-12-13 19:26:47,634 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2022-12-13 19:26:47,634 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 166 flow [2022-12-13 19:26:47,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:47,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:47,635 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 19:26:47,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:26:47,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:47,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash -753057009, now seen corresponding path program 2 times [2022-12-13 19:26:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:47,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058067599] [2022-12-13 19:26:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:47,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058067599] [2022-12-13 19:26:47,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058067599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:47,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761858991] [2022-12-13 19:26:47,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:26:47,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:47,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:47,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:47,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:26:47,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:26:47,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:26:47,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:26:47,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:26:47,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:26:47,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761858991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:47,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:26:47,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 19:26:47,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112838176] [2022-12-13 19:26:47,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:47,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:26:47,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:47,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:26:47,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:26:48,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2022-12-13 19:26:48,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:48,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2022-12-13 19:26:48,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:48,097 INFO L130 PetriNetUnfolder]: 451/757 cut-off events. [2022-12-13 19:26:48,097 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 19:26:48,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 757 events. 451/757 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3230 event pairs, 285 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1241. Up to 752 conditions per place. [2022-12-13 19:26:48,099 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 28 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2022-12-13 19:26:48,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 224 flow [2022-12-13 19:26:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:26:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2022-12-13 19:26:48,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47644444444444445 [2022-12-13 19:26:48,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2022-12-13 19:26:48,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2022-12-13 19:26:48,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:48,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2022-12-13 19:26:48,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,106 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 166 flow. Second operand 3 states and 536 transitions. [2022-12-13 19:26:48,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 224 flow [2022-12-13 19:26:48,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 211 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 19:26:48,107 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 155 flow [2022-12-13 19:26:48,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2022-12-13 19:26:48,108 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2022-12-13 19:26:48,108 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 155 flow [2022-12-13 19:26:48,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:48,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:26:48,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:48,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:48,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash -738719795, now seen corresponding path program 1 times [2022-12-13 19:26:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:48,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168439525] [2022-12-13 19:26:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:48,457 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 19:26:48,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:48,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168439525] [2022-12-13 19:26:48,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168439525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:48,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:48,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:26:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598533157] [2022-12-13 19:26:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:48,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:26:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:26:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:26:48,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 375 [2022-12-13 19:26:48,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:48,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 375 [2022-12-13 19:26:48,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:48,611 INFO L130 PetriNetUnfolder]: 751/1247 cut-off events. [2022-12-13 19:26:48,611 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 19:26:48,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2628 conditions, 1247 events. 751/1247 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6065 event pairs, 165 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 2572. Up to 781 conditions per place. [2022-12-13 19:26:48,615 INFO L137 encePairwiseOnDemand]: 371/375 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2022-12-13 19:26:48,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 278 flow [2022-12-13 19:26:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:26:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2022-12-13 19:26:48,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49422222222222223 [2022-12-13 19:26:48,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2022-12-13 19:26:48,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2022-12-13 19:26:48,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:48,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2022-12-13 19:26:48,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,619 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 155 flow. Second operand 3 states and 556 transitions. [2022-12-13 19:26:48,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 278 flow [2022-12-13 19:26:48,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:26:48,620 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 157 flow [2022-12-13 19:26:48,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2022-12-13 19:26:48,621 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-12-13 19:26:48,621 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 157 flow [2022-12-13 19:26:48,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:48,621 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 19:26:48,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:26:48,622 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1408046479, now seen corresponding path program 1 times [2022-12-13 19:26:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:48,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912985800] [2022-12-13 19:26:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:48,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:48,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912985800] [2022-12-13 19:26:48,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912985800] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:48,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546698439] [2022-12-13 19:26:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:48,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:48,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:48,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:48,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:26:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:48,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:26:48,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:48,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:26:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:48,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546698439] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:26:48,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:26:48,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 19:26:48,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535244783] [2022-12-13 19:26:48,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:26:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:26:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:26:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:26:48,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 375 [2022-12-13 19:26:48,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 157 flow. Second operand has 13 states, 13 states have (on average 170.15384615384616) internal successors, (2212), 13 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:48,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:48,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 375 [2022-12-13 19:26:48,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:49,400 INFO L130 PetriNetUnfolder]: 1651/2741 cut-off events. [2022-12-13 19:26:49,400 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-12-13 19:26:49,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 2741 events. 1651/2741 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13854 event pairs, 1089 based on Foata normal form. 6/1647 useless extension candidates. Maximal degree in co-relation 5073. Up to 441 conditions per place. [2022-12-13 19:26:49,409 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 202 selfloop transitions, 31 changer transitions 0/233 dead transitions. [2022-12-13 19:26:49,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 233 transitions, 1221 flow [2022-12-13 19:26:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:26:49,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:26:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2256 transitions. [2022-12-13 19:26:49,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5013333333333333 [2022-12-13 19:26:49,412 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2256 transitions. [2022-12-13 19:26:49,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2256 transitions. [2022-12-13 19:26:49,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:49,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2256 transitions. [2022-12-13 19:26:49,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 188.0) internal successors, (2256), 12 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:49,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 375.0) internal successors, (4875), 13 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:49,419 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 375.0) internal successors, (4875), 13 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:49,419 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 157 flow. Second operand 12 states and 2256 transitions. [2022-12-13 19:26:49,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 233 transitions, 1221 flow [2022-12-13 19:26:49,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 233 transitions, 1209 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:26:49,423 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 371 flow [2022-12-13 19:26:49,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=371, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2022-12-13 19:26:49,423 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2022-12-13 19:26:49,423 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 371 flow [2022-12-13 19:26:49,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 170.15384615384616) internal successors, (2212), 13 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:49,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:49,424 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:49,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:26:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 19:26:49,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1425366256, now seen corresponding path program 1 times [2022-12-13 19:26:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:49,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205597383] [2022-12-13 19:26:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:49,679 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 19:26:49,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:49,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205597383] [2022-12-13 19:26:49,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205597383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:49,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:49,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:26:49,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981860143] [2022-12-13 19:26:49,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:49,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:26:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:49,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:26:49,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:26:49,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 375 [2022-12-13 19:26:49,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:49,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:49,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 375 [2022-12-13 19:26:49,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:50,043 INFO L130 PetriNetUnfolder]: 2355/3885 cut-off events. [2022-12-13 19:26:50,043 INFO L131 PetriNetUnfolder]: For 396/396 co-relation queries the response was YES. [2022-12-13 19:26:50,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8711 conditions, 3885 events. 2355/3885 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 21841 event pairs, 517 based on Foata normal form. 0/2389 useless extension candidates. Maximal degree in co-relation 7095. Up to 2509 conditions per place. [2022-12-13 19:26:50,056 INFO L137 encePairwiseOnDemand]: 371/375 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2022-12-13 19:26:50,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 534 flow [2022-12-13 19:26:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:26:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2022-12-13 19:26:50,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49244444444444446 [2022-12-13 19:26:50,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2022-12-13 19:26:50,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2022-12-13 19:26:50,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:50,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2022-12-13 19:26:50,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,060 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 371 flow. Second operand 3 states and 554 transitions. [2022-12-13 19:26:50,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 534 flow [2022-12-13 19:26:50,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 444 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-12-13 19:26:50,062 INFO L231 Difference]: Finished difference. Result has 48 places, 54 transitions, 295 flow [2022-12-13 19:26:50,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=48, PETRI_TRANSITIONS=54} [2022-12-13 19:26:50,062 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2022-12-13 19:26:50,063 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 54 transitions, 295 flow [2022-12-13 19:26:50,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:50,063 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:50,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:26:50,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:50,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1240101056, now seen corresponding path program 1 times [2022-12-13 19:26:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337452368] [2022-12-13 19:26:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:50,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:50,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:50,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337452368] [2022-12-13 19:26:50,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337452368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:50,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:50,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:26:50,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579436626] [2022-12-13 19:26:50,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:50,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:26:50,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:50,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:26:50,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:26:50,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 375 [2022-12-13 19:26:50,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 54 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:50,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 375 [2022-12-13 19:26:50,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:50,510 INFO L130 PetriNetUnfolder]: 2135/3511 cut-off events. [2022-12-13 19:26:50,510 INFO L131 PetriNetUnfolder]: For 627/627 co-relation queries the response was YES. [2022-12-13 19:26:50,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8734 conditions, 3511 events. 2135/3511 cut-off events. For 627/627 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 18683 event pairs, 1463 based on Foata normal form. 0/2653 useless extension candidates. Maximal degree in co-relation 7827. Up to 3511 conditions per place. [2022-12-13 19:26:50,524 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2022-12-13 19:26:50,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 397 flow [2022-12-13 19:26:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:26:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2022-12-13 19:26:50,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48088888888888887 [2022-12-13 19:26:50,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2022-12-13 19:26:50,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2022-12-13 19:26:50,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:50,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2022-12-13 19:26:50,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,531 INFO L175 Difference]: Start difference. First operand has 48 places, 54 transitions, 295 flow. Second operand 3 states and 541 transitions. [2022-12-13 19:26:50,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 397 flow [2022-12-13 19:26:50,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:26:50,535 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 291 flow [2022-12-13 19:26:50,535 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2022-12-13 19:26:50,536 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2022-12-13 19:26:50,536 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 291 flow [2022-12-13 19:26:50,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:50,536 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:50,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:26:50,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:50,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:50,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1240101055, now seen corresponding path program 1 times [2022-12-13 19:26:50,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:50,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418226532] [2022-12-13 19:26:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:50,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:50,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:50,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418226532] [2022-12-13 19:26:50,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418226532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:50,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:50,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:26:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256514646] [2022-12-13 19:26:50,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:50,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:26:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:26:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:26:50,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2022-12-13 19:26:50,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:50,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:50,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2022-12-13 19:26:50,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:51,088 INFO L130 PetriNetUnfolder]: 2498/4271 cut-off events. [2022-12-13 19:26:51,088 INFO L131 PetriNetUnfolder]: For 762/762 co-relation queries the response was YES. [2022-12-13 19:26:51,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10343 conditions, 4271 events. 2498/4271 cut-off events. For 762/762 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 24899 event pairs, 1760 based on Foata normal form. 0/3347 useless extension candidates. Maximal degree in co-relation 10321. Up to 3510 conditions per place. [2022-12-13 19:26:51,102 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 73 selfloop transitions, 3 changer transitions 1/77 dead transitions. [2022-12-13 19:26:51,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 567 flow [2022-12-13 19:26:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:26:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:26:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 690 transitions. [2022-12-13 19:26:51,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46 [2022-12-13 19:26:51,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 690 transitions. [2022-12-13 19:26:51,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 690 transitions. [2022-12-13 19:26:51,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:51,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 690 transitions. [2022-12-13 19:26:51,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,107 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 291 flow. Second operand 4 states and 690 transitions. [2022-12-13 19:26:51,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 567 flow [2022-12-13 19:26:51,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:26:51,109 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 301 flow [2022-12-13 19:26:51,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2022-12-13 19:26:51,109 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2022-12-13 19:26:51,109 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 301 flow [2022-12-13 19:26:51,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:51,110 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:51,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:26:51,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1236679653, now seen corresponding path program 1 times [2022-12-13 19:26:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:51,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027792587] [2022-12-13 19:26:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:51,163 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 19:26:51,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:51,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027792587] [2022-12-13 19:26:51,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027792587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:51,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:51,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:26:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739164283] [2022-12-13 19:26:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:51,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:26:51,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:26:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:26:51,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 375 [2022-12-13 19:26:51,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:51,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 375 [2022-12-13 19:26:51,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:51,535 INFO L130 PetriNetUnfolder]: 2113/3622 cut-off events. [2022-12-13 19:26:51,535 INFO L131 PetriNetUnfolder]: For 1268/1268 co-relation queries the response was YES. [2022-12-13 19:26:51,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9181 conditions, 3622 events. 2113/3622 cut-off events. For 1268/1268 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20477 event pairs, 1441 based on Foata normal form. 0/3490 useless extension candidates. Maximal degree in co-relation 9157. Up to 3622 conditions per place. [2022-12-13 19:26:51,545 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2022-12-13 19:26:51,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 401 flow [2022-12-13 19:26:51,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:26:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2022-12-13 19:26:51,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48 [2022-12-13 19:26:51,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2022-12-13 19:26:51,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2022-12-13 19:26:51,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:51,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2022-12-13 19:26:51,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,554 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 301 flow. Second operand 3 states and 540 transitions. [2022-12-13 19:26:51,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 401 flow [2022-12-13 19:26:51,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 395 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 19:26:51,558 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 293 flow [2022-12-13 19:26:51,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2022-12-13 19:26:51,559 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2022-12-13 19:26:51,559 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 293 flow [2022-12-13 19:26:51,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:51,560 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:51,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:26:51,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:51,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:51,560 INFO L85 PathProgramCache]: Analyzing trace with hash -809910518, now seen corresponding path program 1 times [2022-12-13 19:26:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:51,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59247837] [2022-12-13 19:26:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:51,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:51,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:51,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59247837] [2022-12-13 19:26:51,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59247837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:51,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:51,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:26:51,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89474816] [2022-12-13 19:26:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:51,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:26:51,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:26:51,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:26:51,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 375 [2022-12-13 19:26:51,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:51,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:51,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 375 [2022-12-13 19:26:51,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:52,014 INFO L130 PetriNetUnfolder]: 1990/3433 cut-off events. [2022-12-13 19:26:52,014 INFO L131 PetriNetUnfolder]: For 670/670 co-relation queries the response was YES. [2022-12-13 19:26:52,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8687 conditions, 3433 events. 1990/3433 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 20053 event pairs, 550 based on Foata normal form. 24/3331 useless extension candidates. Maximal degree in co-relation 8662. Up to 1891 conditions per place. [2022-12-13 19:26:52,026 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 57 selfloop transitions, 15 changer transitions 4/76 dead transitions. [2022-12-13 19:26:52,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 514 flow [2022-12-13 19:26:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:26:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:26:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 855 transitions. [2022-12-13 19:26:52,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.456 [2022-12-13 19:26:52,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 855 transitions. [2022-12-13 19:26:52,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 855 transitions. [2022-12-13 19:26:52,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:52,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 855 transitions. [2022-12-13 19:26:52,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,034 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,034 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 293 flow. Second operand 5 states and 855 transitions. [2022-12-13 19:26:52,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 514 flow [2022-12-13 19:26:52,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:26:52,038 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 339 flow [2022-12-13 19:26:52,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2022-12-13 19:26:52,039 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2022-12-13 19:26:52,039 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 339 flow [2022-12-13 19:26:52,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:52,039 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:52,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:26:52,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:52,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash -813331921, now seen corresponding path program 1 times [2022-12-13 19:26:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:52,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314721580] [2022-12-13 19:26:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:26:52,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:52,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314721580] [2022-12-13 19:26:52,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314721580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:52,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:52,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:26:52,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775885552] [2022-12-13 19:26:52,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:52,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:26:52,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:52,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:26:52,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:26:52,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 375 [2022-12-13 19:26:52,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:52,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 375 [2022-12-13 19:26:52,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:52,470 INFO L130 PetriNetUnfolder]: 1940/3349 cut-off events. [2022-12-13 19:26:52,470 INFO L131 PetriNetUnfolder]: For 1564/1564 co-relation queries the response was YES. [2022-12-13 19:26:52,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8760 conditions, 3349 events. 1940/3349 cut-off events. For 1564/1564 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18760 event pairs, 648 based on Foata normal form. 6/3235 useless extension candidates. Maximal degree in co-relation 8733. Up to 1686 conditions per place. [2022-12-13 19:26:52,480 INFO L137 encePairwiseOnDemand]: 369/375 looper letters, 50 selfloop transitions, 14 changer transitions 9/73 dead transitions. [2022-12-13 19:26:52,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 73 transitions, 544 flow [2022-12-13 19:26:52,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:26:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:26:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2022-12-13 19:26:52,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45493333333333336 [2022-12-13 19:26:52,481 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2022-12-13 19:26:52,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2022-12-13 19:26:52,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:52,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2022-12-13 19:26:52,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,485 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 339 flow. Second operand 5 states and 853 transitions. [2022-12-13 19:26:52,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 73 transitions, 544 flow [2022-12-13 19:26:52,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 523 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 19:26:52,488 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 345 flow [2022-12-13 19:26:52,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2022-12-13 19:26:52,488 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2022-12-13 19:26:52,488 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 345 flow [2022-12-13 19:26:52,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:52,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:52,489 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:52,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:26:52,489 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:52,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:52,490 INFO L85 PathProgramCache]: Analyzing trace with hash -409917248, now seen corresponding path program 1 times [2022-12-13 19:26:52,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:52,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736898419] [2022-12-13 19:26:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:52,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:52,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736898419] [2022-12-13 19:26:52,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736898419] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:52,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56985766] [2022-12-13 19:26:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:52,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:52,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:52,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:52,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:26:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:52,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:26:52,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:52,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:26:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:52,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56985766] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:26:52,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:26:52,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2022-12-13 19:26:52,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895125198] [2022-12-13 19:26:52,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:26:52,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:26:52,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:52,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:26:52,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:26:53,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 375 [2022-12-13 19:26:53,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 345 flow. Second operand has 15 states, 15 states have (on average 158.0) internal successors, (2370), 15 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:53,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:53,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 375 [2022-12-13 19:26:53,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:53,879 INFO L130 PetriNetUnfolder]: 2865/4984 cut-off events. [2022-12-13 19:26:53,880 INFO L131 PetriNetUnfolder]: For 2451/2451 co-relation queries the response was YES. [2022-12-13 19:26:53,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13122 conditions, 4984 events. 2865/4984 cut-off events. For 2451/2451 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 31321 event pairs, 910 based on Foata normal form. 456/5222 useless extension candidates. Maximal degree in co-relation 13095. Up to 1432 conditions per place. [2022-12-13 19:26:53,892 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 110 selfloop transitions, 27 changer transitions 42/179 dead transitions. [2022-12-13 19:26:53,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 179 transitions, 1213 flow [2022-12-13 19:26:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 19:26:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 19:26:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3259 transitions. [2022-12-13 19:26:53,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4345333333333333 [2022-12-13 19:26:53,896 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3259 transitions. [2022-12-13 19:26:53,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3259 transitions. [2022-12-13 19:26:53,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:53,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3259 transitions. [2022-12-13 19:26:53,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 162.95) internal successors, (3259), 20 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:53,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 375.0) internal successors, (7875), 21 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:53,908 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 375.0) internal successors, (7875), 21 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:53,908 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 345 flow. Second operand 20 states and 3259 transitions. [2022-12-13 19:26:53,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 179 transitions, 1213 flow [2022-12-13 19:26:53,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 179 transitions, 1165 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-13 19:26:53,914 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 495 flow [2022-12-13 19:26:53,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=495, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2022-12-13 19:26:53,914 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 50 predicate places. [2022-12-13 19:26:53,914 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 495 flow [2022-12-13 19:26:53,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 158.0) internal successors, (2370), 15 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:53,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:53,915 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:53,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 19:26:54,116 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:54,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash -413338651, now seen corresponding path program 1 times [2022-12-13 19:26:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:54,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538415534] [2022-12-13 19:26:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:54,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:54,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538415534] [2022-12-13 19:26:54,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538415534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:54,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094983986] [2022-12-13 19:26:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:54,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:54,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:54,190 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:54,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:26:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:54,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:26:54,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:54,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:26:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:26:54,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094983986] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:26:54,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:26:54,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2022-12-13 19:26:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954736838] [2022-12-13 19:26:54,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:26:54,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:26:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:26:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:26:54,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 375 [2022-12-13 19:26:54,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 495 flow. Second operand has 15 states, 15 states have (on average 157.73333333333332) internal successors, (2366), 15 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:54,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:54,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 375 [2022-12-13 19:26:54,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:55,342 INFO L130 PetriNetUnfolder]: 2372/4254 cut-off events. [2022-12-13 19:26:55,342 INFO L131 PetriNetUnfolder]: For 5394/5394 co-relation queries the response was YES. [2022-12-13 19:26:55,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12149 conditions, 4254 events. 2372/4254 cut-off events. For 5394/5394 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 26814 event pairs, 1434 based on Foata normal form. 110/4256 useless extension candidates. Maximal degree in co-relation 12116. Up to 2441 conditions per place. [2022-12-13 19:26:55,353 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 53 selfloop transitions, 23 changer transitions 72/148 dead transitions. [2022-12-13 19:26:55,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 148 transitions, 1123 flow [2022-12-13 19:26:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 19:26:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 19:26:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3385 transitions. [2022-12-13 19:26:55,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42984126984126986 [2022-12-13 19:26:55,357 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3385 transitions. [2022-12-13 19:26:55,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3385 transitions. [2022-12-13 19:26:55,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:55,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3385 transitions. [2022-12-13 19:26:55,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 161.1904761904762) internal successors, (3385), 21 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:55,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 375.0) internal successors, (8250), 22 states have internal predecessors, (8250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:55,366 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 375.0) internal successors, (8250), 22 states have internal predecessors, (8250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:55,366 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 495 flow. Second operand 21 states and 3385 transitions. [2022-12-13 19:26:55,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 148 transitions, 1123 flow [2022-12-13 19:26:55,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 148 transitions, 1046 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-12-13 19:26:55,388 INFO L231 Difference]: Finished difference. Result has 96 places, 58 transitions, 477 flow [2022-12-13 19:26:55,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=477, PETRI_PLACES=96, PETRI_TRANSITIONS=58} [2022-12-13 19:26:55,389 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 69 predicate places. [2022-12-13 19:26:55,389 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 58 transitions, 477 flow [2022-12-13 19:26:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 157.73333333333332) internal successors, (2366), 15 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:55,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:55,389 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:55,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:26:55,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 19:26:55,591 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -118952932, now seen corresponding path program 2 times [2022-12-13 19:26:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:55,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991926679] [2022-12-13 19:26:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:26:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:55,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991926679] [2022-12-13 19:26:55,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991926679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010526644] [2022-12-13 19:26:55,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:26:55,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:55,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:55,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:55,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:26:55,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:26:55,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:26:55,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:26:55,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 19:26:55,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:26:55,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010526644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:55,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:26:55,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2] total 3 [2022-12-13 19:26:55,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319741206] [2022-12-13 19:26:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:55,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:26:55,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:26:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:26:55,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 375 [2022-12-13 19:26:55,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 58 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:55,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:55,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 375 [2022-12-13 19:26:55,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:56,059 INFO L130 PetriNetUnfolder]: 1497/2687 cut-off events. [2022-12-13 19:26:56,059 INFO L131 PetriNetUnfolder]: For 5825/5825 co-relation queries the response was YES. [2022-12-13 19:26:56,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8388 conditions, 2687 events. 1497/2687 cut-off events. For 5825/5825 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15594 event pairs, 999 based on Foata normal form. 162/2759 useless extension candidates. Maximal degree in co-relation 8350. Up to 2687 conditions per place. [2022-12-13 19:26:56,070 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 52 selfloop transitions, 1 changer transitions 4/57 dead transitions. [2022-12-13 19:26:56,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 57 transitions, 579 flow [2022-12-13 19:26:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:26:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2022-12-13 19:26:56,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4791111111111111 [2022-12-13 19:26:56,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2022-12-13 19:26:56,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2022-12-13 19:26:56,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:56,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2022-12-13 19:26:56,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,073 INFO L175 Difference]: Start difference. First operand has 96 places, 58 transitions, 477 flow. Second operand 3 states and 539 transitions. [2022-12-13 19:26:56,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 57 transitions, 579 flow [2022-12-13 19:26:56,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 494 flow, removed 12 selfloop flow, removed 20 redundant places. [2022-12-13 19:26:56,088 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 373 flow [2022-12-13 19:26:56,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=373, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2022-12-13 19:26:56,088 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 40 predicate places. [2022-12-13 19:26:56,088 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 373 flow [2022-12-13 19:26:56,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:56,089 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:56,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:56,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 19:26:56,290 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash -122374335, now seen corresponding path program 2 times [2022-12-13 19:26:56,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:56,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831834260] [2022-12-13 19:26:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:56,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:26:56,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:56,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831834260] [2022-12-13 19:26:56,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831834260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:56,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353363722] [2022-12-13 19:26:56,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:26:56,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:56,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:56,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:56,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:26:56,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:26:56,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:26:56,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:26:56,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 19:26:56,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:26:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 19:26:56,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353363722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:26:56,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:26:56,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-13 19:26:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515172495] [2022-12-13 19:26:56,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:26:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:26:56,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:56,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:26:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:26:56,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 375 [2022-12-13 19:26:56,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 373 flow. Second operand has 6 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:56,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 375 [2022-12-13 19:26:56,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:56,682 INFO L130 PetriNetUnfolder]: 975/1841 cut-off events. [2022-12-13 19:26:56,682 INFO L131 PetriNetUnfolder]: For 891/891 co-relation queries the response was YES. [2022-12-13 19:26:56,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 1841 events. 975/1841 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 9947 event pairs, 207 based on Foata normal form. 0/1841 useless extension candidates. Maximal degree in co-relation 5164. Up to 671 conditions per place. [2022-12-13 19:26:56,687 INFO L137 encePairwiseOnDemand]: 371/375 looper letters, 40 selfloop transitions, 1 changer transitions 33/74 dead transitions. [2022-12-13 19:26:56,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 587 flow [2022-12-13 19:26:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:26:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:26:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1056 transitions. [2022-12-13 19:26:56,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4693333333333333 [2022-12-13 19:26:56,689 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1056 transitions. [2022-12-13 19:26:56,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1056 transitions. [2022-12-13 19:26:56,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:56,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1056 transitions. [2022-12-13 19:26:56,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 375.0) internal successors, (2625), 7 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,696 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 375.0) internal successors, (2625), 7 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,696 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 373 flow. Second operand 6 states and 1056 transitions. [2022-12-13 19:26:56,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 587 flow [2022-12-13 19:26:56,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:26:56,701 INFO L231 Difference]: Finished difference. Result has 67 places, 41 transitions, 325 flow [2022-12-13 19:26:56,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=41} [2022-12-13 19:26:56,701 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 40 predicate places. [2022-12-13 19:26:56,702 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 41 transitions, 325 flow [2022-12-13 19:26:56,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:56,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:26:56,702 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-12-13 19:26:56,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:56,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:56,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 19:26:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1602491313, now seen corresponding path program 2 times [2022-12-13 19:26:56,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:56,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692791520] [2022-12-13 19:26:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:56,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:57,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:57,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692791520] [2022-12-13 19:26:57,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692791520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:57,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561917557] [2022-12-13 19:26:57,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:26:57,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:57,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:57,088 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:57,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:26:57,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:26:57,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:26:57,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:26:57,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 19:26:57,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:26:57,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561917557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:57,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:26:57,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-12-13 19:26:57,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493895987] [2022-12-13 19:26:57,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:57,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:26:57,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:57,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:26:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:26:57,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 375 [2022-12-13 19:26:57,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 41 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:57,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:26:57,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 375 [2022-12-13 19:26:57,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:57,230 INFO L130 PetriNetUnfolder]: 12/56 cut-off events. [2022-12-13 19:26:57,230 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2022-12-13 19:26:57,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 56 events. 12/56 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 221. Up to 56 conditions per place. [2022-12-13 19:26:57,230 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2022-12-13 19:26:57,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 333 flow [2022-12-13 19:26:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:26:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2022-12-13 19:26:57,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45511111111111113 [2022-12-13 19:26:57,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2022-12-13 19:26:57,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2022-12-13 19:26:57,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:57,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2022-12-13 19:26:57,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:57,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:57,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:57,233 INFO L175 Difference]: Start difference. First operand has 67 places, 41 transitions, 325 flow. Second operand 3 states and 512 transitions. [2022-12-13 19:26:57,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 333 flow [2022-12-13 19:26:57,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 232 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-12-13 19:26:57,234 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2022-12-13 19:26:57,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2022-12-13 19:26:57,234 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-12-13 19:26:57,234 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2022-12-13 19:26:57,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:57,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-12-13 19:26:57,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-12-13 19:26:57,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-12-13 19:26:57,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:26:57,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 19:26:57,438 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:26:57,442 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:26:57,443 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:26:57,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:26:57 BasicIcfg [2022-12-13 19:26:57,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:26:57,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:26:57,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:26:57,446 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:26:57,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:26:41" (3/4) ... [2022-12-13 19:26:57,448 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 19:26:57,453 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 19:26:57,453 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 19:26:57,457 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-13 19:26:57,457 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 19:26:57,457 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 19:26:57,457 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 19:26:57,513 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:26:57,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:26:57,515 INFO L158 Benchmark]: Toolchain (without parser) took 16270.37ms. Allocated memory was 127.9MB in the beginning and 526.4MB in the end (delta: 398.5MB). Free memory was 91.4MB in the beginning and 377.6MB in the end (delta: -286.2MB). Peak memory consumption was 115.1MB. Max. memory is 16.1GB. [2022-12-13 19:26:57,515 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:26:57,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.45ms. Allocated memory is still 127.9MB. Free memory was 91.1MB in the beginning and 80.1MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 19:26:57,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.05ms. Allocated memory is still 127.9MB. Free memory was 80.1MB in the beginning and 78.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:26:57,516 INFO L158 Benchmark]: Boogie Preprocessor took 20.94ms. Allocated memory is still 127.9MB. Free memory was 78.1MB in the beginning and 76.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:26:57,517 INFO L158 Benchmark]: RCFGBuilder took 410.56ms. Allocated memory is still 127.9MB. Free memory was 76.7MB in the beginning and 99.3MB in the end (delta: -22.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-12-13 19:26:57,518 INFO L158 Benchmark]: TraceAbstraction took 15547.27ms. Allocated memory was 127.9MB in the beginning and 526.4MB in the end (delta: 398.5MB). Free memory was 98.5MB in the beginning and 380.7MB in the end (delta: -282.2MB). Peak memory consumption was 117.9MB. Max. memory is 16.1GB. [2022-12-13 19:26:57,518 INFO L158 Benchmark]: Witness Printer took 68.46ms. Allocated memory is still 526.4MB. Free memory was 380.7MB in the beginning and 377.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:26:57,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.45ms. Allocated memory is still 127.9MB. Free memory was 91.1MB in the beginning and 80.1MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.05ms. Allocated memory is still 127.9MB. Free memory was 80.1MB in the beginning and 78.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.94ms. Allocated memory is still 127.9MB. Free memory was 78.1MB in the beginning and 76.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 410.56ms. Allocated memory is still 127.9MB. Free memory was 76.7MB in the beginning and 99.3MB in the end (delta: -22.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15547.27ms. Allocated memory was 127.9MB in the beginning and 526.4MB in the end (delta: 398.5MB). Free memory was 98.5MB in the beginning and 380.7MB in the end (delta: -282.2MB). Peak memory consumption was 117.9MB. Max. memory is 16.1GB. * Witness Printer took 68.46ms. Allocated memory is still 526.4MB. Free memory was 380.7MB in the beginning and 377.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 161 PlacesBefore, 27 PlacesAfterwards, 168 TransitionsBefore, 25 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 7 FixpointIterations, 106 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 9 ConcurrentYvCompositions, 9 ChoiceCompositions, 186 TotalNumberOfCompositions, 1833 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1577, independent: 1521, independent conditional: 0, independent unconditional: 1521, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 811, independent: 799, independent conditional: 0, independent unconditional: 799, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1577, independent: 722, independent conditional: 0, independent unconditional: 722, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 811, unknown conditional: 0, unknown unconditional: 811] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: 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, 213 locations, 14 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: 15.4s, OverallIterations: 17, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2753 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2288 mSDsluCounter, 587 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 544 mSDsCounter, 247 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4028 IncrementalHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 247 mSolverCounterUnsat, 43 mSDtfsCounter, 4028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred in iteration=13, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 211 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 864 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1263 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 31 InterpolantComputations, 12 PerfectInterpolantSequences, 125/238 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 19:26:57,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3885fa16-ba54-4133-85a1-d589513682bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE