./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-trans.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_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/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_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/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_5382a433-08f6-4b08-8c61-42e5080b9656/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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --- 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 21:19:57,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:19:57,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:19:57,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:19:57,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:19:57,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:19:57,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:19:57,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:19:57,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:19:57,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:19:57,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:19:57,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:19:57,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:19:57,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:19:57,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:19:57,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:19:57,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:19:57,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:19:57,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:19:57,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:19:57,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:19:57,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:19:57,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:19:57,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:19:57,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:19:57,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:19:57,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:19:57,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:19:57,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:19:57,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:19:57,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:19:57,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:19:57,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:19:57,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:19:57,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:19:57,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:19:57,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:19:57,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:19:57,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:19:57,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:19:57,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:19:57,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:19:57,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:19:57,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:19:57,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:19:57,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:19:57,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:19:57,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:19:57,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:19:57,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:19:57,487 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:19:57,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:19:57,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:19:57,488 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:19:57,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:19:57,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:19:57,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:19:57,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:19:57,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:19:57,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:19:57,489 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:19:57,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:19:57,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:19:57,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:19:57,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:19:57,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:19:57,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:19:57,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:19:57,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:19:57,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:19:57,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:19:57,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:19:57,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:19:57,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:19:57,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:19:57,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:19:57,491 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:19:57,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:19:57,492 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:19:57,492 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_5382a433-08f6-4b08-8c61-42e5080b9656/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 [2022-12-13 21:19:57,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:19:57,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:19:57,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:19:57,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:19:57,717 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:19:57,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2022-12-13 21:20:00,230 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:20:00,385 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:20:00,386 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2022-12-13 21:20:00,391 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/data/d7262d3ed/14dc2a90a2a04d09aaf60c9589edcad3/FLAG9b5fbbb84 [2022-12-13 21:20:00,789 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/data/d7262d3ed/14dc2a90a2a04d09aaf60c9589edcad3 [2022-12-13 21:20:00,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:20:00,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:20:00,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:20:00,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:20:00,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:20:00,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:00,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1542334f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00, skipping insertion in model container [2022-12-13 21:20:00,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:00,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:20:00,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:20:00,940 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_5382a433-08f6-4b08-8c61-42e5080b9656/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2022-12-13 21:20:00,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:20:00,958 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:20:00,977 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_5382a433-08f6-4b08-8c61-42e5080b9656/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2022-12-13 21:20:00,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:20:00,992 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:20:00,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00 WrapperNode [2022-12-13 21:20:00,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:20:00,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:20:00,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:20:00,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:20:00,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,032 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 479 [2022-12-13 21:20:01,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:20:01,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:20:01,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:20:01,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:20:01,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:20:01,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:20:01,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:20:01,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:20:01,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (1/1) ... [2022-12-13 21:20:01,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:20:01,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:20:01,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:20:01,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:20:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:20:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:20:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:20:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:20:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:20:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:20:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:20:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:20:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:20:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:20:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:20:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:20:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:20:01,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:20:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:20:01,137 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 21:20:01,243 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:20:01,245 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:20:01,776 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:20:01,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:20:01,789 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 21:20:01,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:20:01 BoogieIcfgContainer [2022-12-13 21:20:01,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:20:01,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:20:01,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:20:01,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:20:01,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:20:00" (1/3) ... [2022-12-13 21:20:01,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b736b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:20:01, skipping insertion in model container [2022-12-13 21:20:01,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:00" (2/3) ... [2022-12-13 21:20:01,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b736b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:20:01, skipping insertion in model container [2022-12-13 21:20:01,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:20:01" (3/3) ... [2022-12-13 21:20:01,799 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2022-12-13 21:20:01,808 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:20:01,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:20:01,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-12-13 21:20:01,818 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:20:01,909 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 21:20:01,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 657 transitions, 1338 flow [2022-12-13 21:20:02,087 INFO L130 PetriNetUnfolder]: 47/654 cut-off events. [2022-12-13 21:20:02,087 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:20:02,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 654 events. 47/654 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1089 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 551. Up to 2 conditions per place. [2022-12-13 21:20:02,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 620 places, 657 transitions, 1338 flow [2022-12-13 21:20:02,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 633 transitions, 1281 flow [2022-12-13 21:20:02,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:20:02,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 597 places, 633 transitions, 1281 flow [2022-12-13 21:20:02,115 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 597 places, 633 transitions, 1281 flow [2022-12-13 21:20:02,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 633 transitions, 1281 flow [2022-12-13 21:20:02,244 INFO L130 PetriNetUnfolder]: 46/633 cut-off events. [2022-12-13 21:20:02,245 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:20:02,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 633 events. 46/633 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1084 event pairs, 0 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 551. Up to 2 conditions per place. [2022-12-13 21:20:02,258 INFO L119 LiptonReduction]: Number of co-enabled transitions 40128 [2022-12-13 21:20:25,816 INFO L134 LiptonReduction]: Checked pairs total: 48193 [2022-12-13 21:20:25,816 INFO L136 LiptonReduction]: Total number of compositions: 804 [2022-12-13 21:20:25,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:20:25,831 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;@799bd21a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:20:25,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-12-13 21:20:25,832 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 21:20:25,832 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:20:25,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:25,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 21:20:25,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2584, now seen corresponding path program 1 times [2022-12-13 21:20:25,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:25,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345704357] [2022-12-13 21:20:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:25,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:25,911 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 21:20:25,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:25,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345704357] [2022-12-13 21:20:25,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345704357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:25,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:25,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 21:20:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382945274] [2022-12-13 21:20:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:25,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:20:25,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:20:25,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:20:25,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 621 out of 1461 [2022-12-13 21:20:25,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 179 flow. Second operand has 2 states, 2 states have (on average 621.5) internal successors, (1243), 2 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:25,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:25,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 621 of 1461 [2022-12-13 21:20:25,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:26,820 INFO L130 PetriNetUnfolder]: 4475/6364 cut-off events. [2022-12-13 21:20:26,821 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2022-12-13 21:20:26,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 6364 events. 4475/6364 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30367 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12104. Up to 6365 conditions per place. [2022-12-13 21:20:26,846 INFO L137 encePairwiseOnDemand]: 1453/1461 looper letters, 74 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2022-12-13 21:20:26,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 311 flow [2022-12-13 21:20:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:20:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:20:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1324 transitions. [2022-12-13 21:20:26,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4531143052703628 [2022-12-13 21:20:26,860 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1324 transitions. [2022-12-13 21:20:26,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1324 transitions. [2022-12-13 21:20:26,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:26,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1324 transitions. [2022-12-13 21:20:26,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 662.0) internal successors, (1324), 2 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:26,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1461.0) internal successors, (4383), 3 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:26,879 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1461.0) internal successors, (4383), 3 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:26,880 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 179 flow. Second operand 2 states and 1324 transitions. [2022-12-13 21:20:26,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 311 flow [2022-12-13 21:20:26,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 302 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 21:20:26,886 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 154 flow [2022-12-13 21:20:26,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2022-12-13 21:20:26,890 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2022-12-13 21:20:26,890 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 154 flow [2022-12-13 21:20:26,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 621.5) internal successors, (1243), 2 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:26,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:26,891 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:20:26,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:20:26,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash 82465, now seen corresponding path program 1 times [2022-12-13 21:20:26,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:26,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994339731] [2022-12-13 21:20:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:27,009 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 21:20:27,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:27,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994339731] [2022-12-13 21:20:27,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994339731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:27,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:27,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:20:27,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043341210] [2022-12-13 21:20:27,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:27,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:27,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:27,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:27,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:27,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 613 out of 1461 [2022-12-13 21:20:27,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 613.6666666666666) internal successors, (1841), 3 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:27,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:27,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 613 of 1461 [2022-12-13 21:20:27,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:27,890 INFO L130 PetriNetUnfolder]: 4475/6362 cut-off events. [2022-12-13 21:20:27,890 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 21:20:27,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12981 conditions, 6362 events. 4475/6362 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30401 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12978. Up to 6362 conditions per place. [2022-12-13 21:20:27,914 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 71 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2022-12-13 21:20:27,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 294 flow [2022-12-13 21:20:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:20:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1913 transitions. [2022-12-13 21:20:27,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43645904631530913 [2022-12-13 21:20:27,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1913 transitions. [2022-12-13 21:20:27,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1913 transitions. [2022-12-13 21:20:27,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:27,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1913 transitions. [2022-12-13 21:20:27,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.6666666666666) internal successors, (1913), 3 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:27,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:27,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:27,934 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 154 flow. Second operand 3 states and 1913 transitions. [2022-12-13 21:20:27,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 294 flow [2022-12-13 21:20:27,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:20:27,936 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 152 flow [2022-12-13 21:20:27,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2022-12-13 21:20:27,937 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2022-12-13 21:20:27,937 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 152 flow [2022-12-13 21:20:27,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 613.6666666666666) internal successors, (1841), 3 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:27,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:27,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:20:27,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:20:27,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash 82464, now seen corresponding path program 1 times [2022-12-13 21:20:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:27,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213591510] [2022-12-13 21:20:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:28,049 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 21:20:28,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:28,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213591510] [2022-12-13 21:20:28,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213591510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:28,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:28,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:20:28,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008878543] [2022-12-13 21:20:28,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:28,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:28,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:28,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:28,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:28,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 21:20:28,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 615.6666666666666) internal successors, (1847), 3 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:28,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:28,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 21:20:28,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:28,941 INFO L130 PetriNetUnfolder]: 4475/6360 cut-off events. [2022-12-13 21:20:28,941 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 21:20:28,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12979 conditions, 6360 events. 4475/6360 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30385 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12975. Up to 6360 conditions per place. [2022-12-13 21:20:28,966 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 69 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2022-12-13 21:20:28,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 288 flow [2022-12-13 21:20:28,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:20:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1917 transitions. [2022-12-13 21:20:28,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43737166324435317 [2022-12-13 21:20:28,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1917 transitions. [2022-12-13 21:20:28,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1917 transitions. [2022-12-13 21:20:28,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:28,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1917 transitions. [2022-12-13 21:20:28,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:28,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:28,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:28,981 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 152 flow. Second operand 3 states and 1917 transitions. [2022-12-13 21:20:28,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 288 flow [2022-12-13 21:20:28,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:20:28,983 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 149 flow [2022-12-13 21:20:28,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2022-12-13 21:20:28,983 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2022-12-13 21:20:28,984 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 149 flow [2022-12-13 21:20:28,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 615.6666666666666) internal successors, (1847), 3 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:28,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:28,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:20:28,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:20:28,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:28,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash 82377, now seen corresponding path program 1 times [2022-12-13 21:20:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:28,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819016948] [2022-12-13 21:20:28,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:28,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:29,041 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 21:20:29,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:29,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819016948] [2022-12-13 21:20:29,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819016948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:29,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:29,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:20:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657552397] [2022-12-13 21:20:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:29,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 21:20:29,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 612.6666666666666) internal successors, (1838), 3 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:29,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:29,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 21:20:29,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:30,526 INFO L130 PetriNetUnfolder]: 8952/12716 cut-off events. [2022-12-13 21:20:30,526 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 21:20:30,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25946 conditions, 12716 events. 8952/12716 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 67648 event pairs, 7650 based on Foata normal form. 0/6679 useless extension candidates. Maximal degree in co-relation 25942. Up to 6359 conditions per place. [2022-12-13 21:20:30,562 INFO L137 encePairwiseOnDemand]: 1449/1461 looper letters, 127 selfloop transitions, 9 changer transitions 0/136 dead transitions. [2022-12-13 21:20:30,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 136 transitions, 559 flow [2022-12-13 21:20:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:20:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1975 transitions. [2022-12-13 21:20:30,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4506046087154917 [2022-12-13 21:20:30,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1975 transitions. [2022-12-13 21:20:30,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1975 transitions. [2022-12-13 21:20:30,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:30,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1975 transitions. [2022-12-13 21:20:30,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 658.3333333333334) internal successors, (1975), 3 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:30,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:30,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:30,573 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 149 flow. Second operand 3 states and 1975 transitions. [2022-12-13 21:20:30,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 136 transitions, 559 flow [2022-12-13 21:20:30,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 136 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:20:30,575 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 222 flow [2022-12-13 21:20:30,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2022-12-13 21:20:30,576 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2022-12-13 21:20:30,576 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 222 flow [2022-12-13 21:20:30,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 612.6666666666666) internal successors, (1838), 3 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:30,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:30,577 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:20:30,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:20:30,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:30,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:30,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2558658, now seen corresponding path program 1 times [2022-12-13 21:20:30,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:30,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420438007] [2022-12-13 21:20:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:30,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:30,631 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 21:20:30,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:30,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420438007] [2022-12-13 21:20:30,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420438007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:30,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:30,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:20:30,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959565508] [2022-12-13 21:20:30,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:30,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:20:30,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:30,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:20:30,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:20:30,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 21:20:30,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 612.75) internal successors, (2451), 4 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:30,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:30,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 21:20:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:32,355 INFO L130 PetriNetUnfolder]: 8949/12710 cut-off events. [2022-12-13 21:20:32,355 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 21:20:32,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25955 conditions, 12710 events. 8949/12710 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 67892 event pairs, 7650 based on Foata normal form. 2/6689 useless extension candidates. Maximal degree in co-relation 25950. Up to 6357 conditions per place. [2022-12-13 21:20:32,392 INFO L137 encePairwiseOnDemand]: 1452/1461 looper letters, 124 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2022-12-13 21:20:32,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 130 transitions, 574 flow [2022-12-13 21:20:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:20:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:20:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2584 transitions. [2022-12-13 21:20:32,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44216290212183434 [2022-12-13 21:20:32,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2584 transitions. [2022-12-13 21:20:32,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2584 transitions. [2022-12-13 21:20:32,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:32,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2584 transitions. [2022-12-13 21:20:32,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 646.0) internal successors, (2584), 4 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:32,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:32,405 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:32,405 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 222 flow. Second operand 4 states and 2584 transitions. [2022-12-13 21:20:32,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 130 transitions, 574 flow [2022-12-13 21:20:32,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:20:32,407 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 192 flow [2022-12-13 21:20:32,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2022-12-13 21:20:32,408 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2022-12-13 21:20:32,408 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 192 flow [2022-12-13 21:20:32,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 612.75) internal successors, (2451), 4 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:32,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:32,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:20:32,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:20:32,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2561175, now seen corresponding path program 1 times [2022-12-13 21:20:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:32,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915269314] [2022-12-13 21:20:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:32,447 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 21:20:32,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:32,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915269314] [2022-12-13 21:20:32,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915269314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:32,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:32,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:20:32,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271899232] [2022-12-13 21:20:32,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:32,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:32,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:32,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:32,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 21:20:32,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:32,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:32,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 21:20:32,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:33,725 INFO L130 PetriNetUnfolder]: 8949/12706 cut-off events. [2022-12-13 21:20:33,725 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 21:20:33,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25947 conditions, 12706 events. 8949/12706 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 67880 event pairs, 7650 based on Foata normal form. 0/6687 useless extension candidates. Maximal degree in co-relation 25942. Up to 12706 conditions per place. [2022-12-13 21:20:33,769 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 69 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2022-12-13 21:20:33,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 328 flow [2022-12-13 21:20:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:20:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1912 transitions. [2022-12-13 21:20:33,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43623089208304816 [2022-12-13 21:20:33,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1912 transitions. [2022-12-13 21:20:33,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1912 transitions. [2022-12-13 21:20:33,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:33,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1912 transitions. [2022-12-13 21:20:33,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:33,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:33,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:33,779 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 192 flow. Second operand 3 states and 1912 transitions. [2022-12-13 21:20:33,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 328 flow [2022-12-13 21:20:33,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:20:33,780 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 183 flow [2022-12-13 21:20:33,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2022-12-13 21:20:33,781 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2022-12-13 21:20:33,781 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 183 flow [2022-12-13 21:20:33,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:33,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:33,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:20:33,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:20:33,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2561274, now seen corresponding path program 1 times [2022-12-13 21:20:33,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:33,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002338905] [2022-12-13 21:20:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:33,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:33,815 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 21:20:33,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:33,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002338905] [2022-12-13 21:20:33,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002338905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:33,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:33,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:20:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096893859] [2022-12-13 21:20:33,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:33,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:33,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:33,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 613 out of 1461 [2022-12-13 21:20:33,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 614.0) internal successors, (1842), 3 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:33,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:33,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 613 of 1461 [2022-12-13 21:20:33,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:35,345 INFO L130 PetriNetUnfolder]: 8949/12702 cut-off events. [2022-12-13 21:20:35,345 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 21:20:35,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25937 conditions, 12702 events. 8949/12702 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 67851 event pairs, 7650 based on Foata normal form. 2/6685 useless extension candidates. Maximal degree in co-relation 25932. Up to 12702 conditions per place. [2022-12-13 21:20:35,384 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 67 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-12-13 21:20:35,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 315 flow [2022-12-13 21:20:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:20:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1904 transitions. [2022-12-13 21:20:35,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4344056582249601 [2022-12-13 21:20:35,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1904 transitions. [2022-12-13 21:20:35,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1904 transitions. [2022-12-13 21:20:35,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:35,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1904 transitions. [2022-12-13 21:20:35,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 634.6666666666666) internal successors, (1904), 3 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:35,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:35,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:35,393 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 183 flow. Second operand 3 states and 1904 transitions. [2022-12-13 21:20:35,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 315 flow [2022-12-13 21:20:35,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:20:35,395 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 180 flow [2022-12-13 21:20:35,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2022-12-13 21:20:35,396 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2022-12-13 21:20:35,396 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 180 flow [2022-12-13 21:20:35,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 614.0) internal successors, (1842), 3 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:35,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:35,396 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:20:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:20:35,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:35,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2558657, now seen corresponding path program 1 times [2022-12-13 21:20:35,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:35,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440465853] [2022-12-13 21:20:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:35,441 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 21:20:35,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:35,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440465853] [2022-12-13 21:20:35,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440465853] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:20:35,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442859850] [2022-12-13 21:20:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:35,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:20:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:20:35,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:20:35,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:20:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:35,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:20:35,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:35,555 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 21:20:35,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:35,569 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 21:20:35,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442859850] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:35,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:20:35,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 21:20:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012422623] [2022-12-13 21:20:35,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:35,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:20:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:35,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:20:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:20:35,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 21:20:35,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 613.1428571428571) internal successors, (4292), 7 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:35,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:35,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 21:20:35,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:39,020 INFO L130 PetriNetUnfolder]: 22371/31749 cut-off events. [2022-12-13 21:20:39,020 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-12-13 21:20:39,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64809 conditions, 31749 events. 22371/31749 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 191618 event pairs, 19125 based on Foata normal form. 0/16709 useless extension candidates. Maximal degree in co-relation 64804. Up to 6355 conditions per place. [2022-12-13 21:20:39,142 INFO L137 encePairwiseOnDemand]: 1452/1461 looper letters, 278 selfloop transitions, 21 changer transitions 0/299 dead transitions. [2022-12-13 21:20:39,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 299 transitions, 1300 flow [2022-12-13 21:20:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:20:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:20:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3980 transitions. [2022-12-13 21:20:39,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4540269221994068 [2022-12-13 21:20:39,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3980 transitions. [2022-12-13 21:20:39,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3980 transitions. [2022-12-13 21:20:39,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:39,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3980 transitions. [2022-12-13 21:20:39,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 663.3333333333334) internal successors, (3980), 6 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:39,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1461.0) internal successors, (10227), 7 states have internal predecessors, (10227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:39,161 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1461.0) internal successors, (10227), 7 states have internal predecessors, (10227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:39,161 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 180 flow. Second operand 6 states and 3980 transitions. [2022-12-13 21:20:39,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 299 transitions, 1300 flow [2022-12-13 21:20:39,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 299 transitions, 1299 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:20:39,163 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 335 flow [2022-12-13 21:20:39,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2022-12-13 21:20:39,164 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2022-12-13 21:20:39,164 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 335 flow [2022-12-13 21:20:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 613.1428571428571) internal successors, (4292), 7 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:39,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:39,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:20:39,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:20:39,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:20:39,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 79404660, now seen corresponding path program 1 times [2022-12-13 21:20:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:39,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326662790] [2022-12-13 21:20:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:39,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:39,427 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 21:20:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:39,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326662790] [2022-12-13 21:20:39,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326662790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:39,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:39,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:20:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83521284] [2022-12-13 21:20:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:39,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:39,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:39,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 21:20:39,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:39,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:39,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 21:20:39,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:42,763 INFO L130 PetriNetUnfolder]: 22371/31744 cut-off events. [2022-12-13 21:20:42,763 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-12-13 21:20:42,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64850 conditions, 31744 events. 22371/31744 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 191599 event pairs, 19125 based on Foata normal form. 0/16714 useless extension candidates. Maximal degree in co-relation 64842. Up to 31744 conditions per place. [2022-12-13 21:20:42,957 INFO L137 encePairwiseOnDemand]: 1459/1461 looper letters, 81 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2022-12-13 21:20:42,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 497 flow [2022-12-13 21:20:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:20:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1908 transitions. [2022-12-13 21:20:42,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4353182751540041 [2022-12-13 21:20:42,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1908 transitions. [2022-12-13 21:20:42,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1908 transitions. [2022-12-13 21:20:42,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:42,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1908 transitions. [2022-12-13 21:20:42,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:42,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:42,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:42,965 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 335 flow. Second operand 3 states and 1908 transitions. [2022-12-13 21:20:42,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 497 flow [2022-12-13 21:20:42,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 467 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 21:20:42,967 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 305 flow [2022-12-13 21:20:42,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2022-12-13 21:20:42,968 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2022-12-13 21:20:42,968 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 305 flow [2022-12-13 21:20:42,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:42,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:42,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:20:42,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:20:42,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:42,969 INFO L85 PathProgramCache]: Analyzing trace with hash 79404661, now seen corresponding path program 1 times [2022-12-13 21:20:42,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:42,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968370845] [2022-12-13 21:20:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:42,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:42,999 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 21:20:42,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:42,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968370845] [2022-12-13 21:20:43,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968370845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:43,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:43,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:20:43,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095600409] [2022-12-13 21:20:43,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:43,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:43,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:43,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 613 out of 1461 [2022-12-13 21:20:43,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 614.3333333333334) internal successors, (1843), 3 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:43,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:43,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 613 of 1461 [2022-12-13 21:20:43,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:46,167 INFO L130 PetriNetUnfolder]: 22371/31739 cut-off events. [2022-12-13 21:20:46,167 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-12-13 21:20:46,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64824 conditions, 31739 events. 22371/31739 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 191576 event pairs, 19125 based on Foata normal form. 0/16714 useless extension candidates. Maximal degree in co-relation 64815. Up to 31739 conditions per place. [2022-12-13 21:20:46,301 INFO L137 encePairwiseOnDemand]: 1459/1461 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2022-12-13 21:20:46,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 465 flow [2022-12-13 21:20:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:20:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1901 transitions. [2022-12-13 21:20:46,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43372119552817706 [2022-12-13 21:20:46,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1901 transitions. [2022-12-13 21:20:46,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1901 transitions. [2022-12-13 21:20:46,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:46,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1901 transitions. [2022-12-13 21:20:46,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 633.6666666666666) internal successors, (1901), 3 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:46,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:46,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:46,311 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 305 flow. Second operand 3 states and 1901 transitions. [2022-12-13 21:20:46,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 465 flow [2022-12-13 21:20:46,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:20:46,314 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 304 flow [2022-12-13 21:20:46,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2022-12-13 21:20:46,315 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2022-12-13 21:20:46,315 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 304 flow [2022-12-13 21:20:46,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 614.3333333333334) internal successors, (1843), 3 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:46,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:46,316 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:20:46,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:20:46,316 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1833417466, now seen corresponding path program 1 times [2022-12-13 21:20:46,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:46,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646944912] [2022-12-13 21:20:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:46,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:46,371 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 21:20:46,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:46,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646944912] [2022-12-13 21:20:46,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646944912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:46,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:46,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:20:46,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188950031] [2022-12-13 21:20:46,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:46,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:46,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:46,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:46,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 21:20:46,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 613.6666666666666) internal successors, (1841), 3 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:46,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:46,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 21:20:46,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:20:53,094 INFO L130 PetriNetUnfolder]: 44726/63414 cut-off events. [2022-12-13 21:20:53,094 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-12-13 21:20:53,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129445 conditions, 63414 events. 44726/63414 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 418701 event pairs, 38250 based on Foata normal form. 0/33394 useless extension candidates. Maximal degree in co-relation 129436. Up to 31740 conditions per place. [2022-12-13 21:20:53,416 INFO L137 encePairwiseOnDemand]: 1449/1461 looper letters, 120 selfloop transitions, 6 changer transitions 0/126 dead transitions. [2022-12-13 21:20:53,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 126 transitions, 652 flow [2022-12-13 21:20:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:20:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1948 transitions. [2022-12-13 21:20:53,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2022-12-13 21:20:53,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1948 transitions. [2022-12-13 21:20:53,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1948 transitions. [2022-12-13 21:20:53,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:20:53,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1948 transitions. [2022-12-13 21:20:53,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:53,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:53,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:53,425 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 304 flow. Second operand 3 states and 1948 transitions. [2022-12-13 21:20:53,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 126 transitions, 652 flow [2022-12-13 21:20:53,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:20:53,427 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 359 flow [2022-12-13 21:20:53,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2022-12-13 21:20:53,428 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2022-12-13 21:20:53,428 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 359 flow [2022-12-13 21:20:53,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 613.6666666666666) internal successors, (1841), 3 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:53,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:20:53,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:20:53,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:20:53,429 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:20:53,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:53,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1001360763, now seen corresponding path program 1 times [2022-12-13 21:20:53,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:20:53,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734186247] [2022-12-13 21:20:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:20:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:53,476 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 21:20:53,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:20:53,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734186247] [2022-12-13 21:20:53,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734186247] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:20:53,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818971103] [2022-12-13 21:20:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:53,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:20:53,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:20:53,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:20:53,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:20:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:53,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:20:53,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:20:53,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:20:53,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818971103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:53,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:20:53,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 21:20:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932351270] [2022-12-13 21:20:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:20:53,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:53,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:20:53,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 609 out of 1461 [2022-12-13 21:20:53,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 611.0) internal successors, (1833), 3 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:53,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:20:53,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 609 of 1461 [2022-12-13 21:20:53,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:21:00,614 INFO L130 PetriNetUnfolder]: 44725/63413 cut-off events. [2022-12-13 21:21:00,614 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2022-12-13 21:21:00,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129558 conditions, 63413 events. 44725/63413 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 418644 event pairs, 38250 based on Foata normal form. 1/33424 useless extension candidates. Maximal degree in co-relation 129548. Up to 63413 conditions per place. [2022-12-13 21:21:00,964 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 83 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2022-12-13 21:21:00,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 525 flow [2022-12-13 21:21:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:21:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:21:00,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1890 transitions. [2022-12-13 21:21:00,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43121149897330596 [2022-12-13 21:21:00,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1890 transitions. [2022-12-13 21:21:00,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1890 transitions. [2022-12-13 21:21:00,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:21:00,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1890 transitions. [2022-12-13 21:21:00,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 630.0) internal successors, (1890), 3 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:00,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:00,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:00,974 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 359 flow. Second operand 3 states and 1890 transitions. [2022-12-13 21:21:00,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 525 flow [2022-12-13 21:21:00,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:21:00,977 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 347 flow [2022-12-13 21:21:00,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2022-12-13 21:21:00,978 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2022-12-13 21:21:00,978 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 347 flow [2022-12-13 21:21:00,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 611.0) internal successors, (1833), 3 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:00,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:21:00,979 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:21:00,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:21:01,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 21:21:01,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:21:01,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:01,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1079525431, now seen corresponding path program 2 times [2022-12-13 21:21:01,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:21:01,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183220688] [2022-12-13 21:21:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:01,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:21:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:01,295 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 21:21:01,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:21:01,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183220688] [2022-12-13 21:21:01,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183220688] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:21:01,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599116939] [2022-12-13 21:21:01,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:21:01,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:21:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:21:01,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:21:01,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:21:01,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:21:01,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:21:01,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:21:01,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:21:01,396 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 21:21:01,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:21:01,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599116939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:21:01,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:21:01,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 21:21:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855758719] [2022-12-13 21:21:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:21:01,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:21:01,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:21:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:21:01,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:21:01,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 21:21:01,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:01,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:21:01,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 21:21:01,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:21:08,162 INFO L130 PetriNetUnfolder]: 44725/63410 cut-off events. [2022-12-13 21:21:08,163 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-12-13 21:21:08,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129512 conditions, 63410 events. 44725/63410 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 418715 event pairs, 38250 based on Foata normal form. 3/33403 useless extension candidates. Maximal degree in co-relation 129502. Up to 63410 conditions per place. [2022-12-13 21:21:08,513 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 81 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2022-12-13 21:21:08,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 481 flow [2022-12-13 21:21:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:21:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:21:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1906 transitions. [2022-12-13 21:21:08,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43486196668948207 [2022-12-13 21:21:08,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1906 transitions. [2022-12-13 21:21:08,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1906 transitions. [2022-12-13 21:21:08,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:21:08,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1906 transitions. [2022-12-13 21:21:08,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 635.3333333333334) internal successors, (1906), 3 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:08,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:08,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:08,524 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 347 flow. Second operand 3 states and 1906 transitions. [2022-12-13 21:21:08,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 481 flow [2022-12-13 21:21:08,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 435 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 21:21:08,526 INFO L231 Difference]: Finished difference. Result has 71 places, 82 transitions, 273 flow [2022-12-13 21:21:08,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2022-12-13 21:21:08,526 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2022-12-13 21:21:08,527 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 273 flow [2022-12-13 21:21:08,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:08,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:21:08,527 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:21:08,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:21:08,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:21:08,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:21:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:08,730 INFO L85 PathProgramCache]: Analyzing trace with hash 972619645, now seen corresponding path program 1 times [2022-12-13 21:21:08,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:21:08,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291834840] [2022-12-13 21:21:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:08,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:21:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:21:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:21:08,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291834840] [2022-12-13 21:21:08,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291834840] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:21:08,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700499964] [2022-12-13 21:21:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:08,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:21:08,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:21:08,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:21:08,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:21:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:08,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:21:08,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:21:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:21:08,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:21:08,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700499964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:21:08,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:21:08,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-12-13 21:21:08,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775351892] [2022-12-13 21:21:08,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:21:08,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:21:08,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:21:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:21:08,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:21:09,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 21:21:09,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 604.75) internal successors, (2419), 4 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:09,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:21:09,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 21:21:09,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:21:15,564 INFO L130 PetriNetUnfolder]: 44724/63409 cut-off events. [2022-12-13 21:21:15,564 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2022-12-13 21:21:15,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129483 conditions, 63409 events. 44724/63409 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 418668 event pairs, 38250 based on Foata normal form. 0/33399 useless extension candidates. Maximal degree in co-relation 129477. Up to 63404 conditions per place. [2022-12-13 21:21:15,890 INFO L137 encePairwiseOnDemand]: 1456/1461 looper letters, 74 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2022-12-13 21:21:15,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 431 flow [2022-12-13 21:21:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:21:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:21:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2473 transitions. [2022-12-13 21:21:15,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4231690622861054 [2022-12-13 21:21:15,894 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2473 transitions. [2022-12-13 21:21:15,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2473 transitions. [2022-12-13 21:21:15,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:21:15,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2473 transitions. [2022-12-13 21:21:15,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 618.25) internal successors, (2473), 4 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:15,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:15,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:15,902 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 273 flow. Second operand 4 states and 2473 transitions. [2022-12-13 21:21:15,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 431 flow [2022-12-13 21:21:15,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:21:15,903 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 282 flow [2022-12-13 21:21:15,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2022-12-13 21:21:15,904 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2022-12-13 21:21:15,904 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 282 flow [2022-12-13 21:21:15,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 604.75) internal successors, (2419), 4 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:15,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:21:15,904 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:21:15,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:21:16,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 21:21:16,105 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:21:16,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1411823, now seen corresponding path program 1 times [2022-12-13 21:21:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:21:16,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336399632] [2022-12-13 21:21:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:21:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:21:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:21:16,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336399632] [2022-12-13 21:21:16,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336399632] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:21:16,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344358876] [2022-12-13 21:21:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:16,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:21:16,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:21:16,151 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:21:16,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:21:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:16,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:21:16,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:21:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:21:16,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:21:16,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344358876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:21:16,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:21:16,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-12-13 21:21:16,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283570595] [2022-12-13 21:21:16,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:21:16,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:21:16,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:21:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:21:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:21:16,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 21:21:16,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:16,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:21:16,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 21:21:16,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:21:21,515 INFO L130 PetriNetUnfolder]: 35781/50732 cut-off events. [2022-12-13 21:21:21,515 INFO L131 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2022-12-13 21:21:21,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103611 conditions, 50732 events. 35781/50732 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 1998. Compared 327255 event pairs, 30600 based on Foata normal form. 1/26725 useless extension candidates. Maximal degree in co-relation 103605. Up to 50727 conditions per place. [2022-12-13 21:21:21,761 INFO L137 encePairwiseOnDemand]: 1456/1461 looper letters, 74 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2022-12-13 21:21:21,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 444 flow [2022-12-13 21:21:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:21:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:21:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2473 transitions. [2022-12-13 21:21:21,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4231690622861054 [2022-12-13 21:21:21,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2473 transitions. [2022-12-13 21:21:21,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2473 transitions. [2022-12-13 21:21:21,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:21:21,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2473 transitions. [2022-12-13 21:21:21,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 618.25) internal successors, (2473), 4 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:21,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:21,773 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:21,773 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 282 flow. Second operand 4 states and 2473 transitions. [2022-12-13 21:21:21,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 444 flow [2022-12-13 21:21:21,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:21:21,775 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 298 flow [2022-12-13 21:21:21,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2022-12-13 21:21:21,775 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2022-12-13 21:21:21,775 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 298 flow [2022-12-13 21:21:21,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:21,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:21:21,776 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:21:21,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:21:21,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 21:21:21,977 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:21:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -46741700, now seen corresponding path program 1 times [2022-12-13 21:21:21,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:21:21,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220263890] [2022-12-13 21:21:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:21,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:21:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:21:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:21:22,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220263890] [2022-12-13 21:21:22,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220263890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:21:22,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429721316] [2022-12-13 21:21:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:22,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:21:22,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:21:22,057 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:21:22,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:21:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:22,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:21:22,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:21:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:21:22,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:21:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:21:22,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429721316] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:21:22,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:21:22,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 21:21:22,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710731808] [2022-12-13 21:21:22,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:21:22,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:21:22,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:21:22,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:21:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:21:22,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 21:21:22,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:22,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:21:22,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 21:21:22,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:21:35,532 INFO L130 PetriNetUnfolder]: 89469/126788 cut-off events. [2022-12-13 21:21:35,533 INFO L131 PetriNetUnfolder]: For 973/973 co-relation queries the response was YES. [2022-12-13 21:21:35,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258879 conditions, 126788 events. 89469/126788 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 4523. Compared 902174 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 258872. Up to 25381 conditions per place. [2022-12-13 21:21:36,268 INFO L137 encePairwiseOnDemand]: 1449/1461 looper letters, 232 selfloop transitions, 33 changer transitions 0/265 dead transitions. [2022-12-13 21:21:36,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 265 transitions, 1268 flow [2022-12-13 21:21:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:21:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:21:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4540 transitions. [2022-12-13 21:21:36,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44392294905641927 [2022-12-13 21:21:36,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4540 transitions. [2022-12-13 21:21:36,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4540 transitions. [2022-12-13 21:21:36,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:21:36,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4540 transitions. [2022-12-13 21:21:36,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 648.5714285714286) internal successors, (4540), 7 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:36,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1461.0) internal successors, (11688), 8 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:36,289 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1461.0) internal successors, (11688), 8 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:36,289 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 298 flow. Second operand 7 states and 4540 transitions. [2022-12-13 21:21:36,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 265 transitions, 1268 flow [2022-12-13 21:21:36,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 265 transitions, 1249 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:21:36,294 INFO L231 Difference]: Finished difference. Result has 81 places, 105 transitions, 498 flow [2022-12-13 21:21:36,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=498, PETRI_PLACES=81, PETRI_TRANSITIONS=105} [2022-12-13 21:21:36,295 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2022-12-13 21:21:36,295 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 105 transitions, 498 flow [2022-12-13 21:21:36,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:36,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:21:36,296 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:21:36,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:21:36,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 21:21:36,497 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:21:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1448986867, now seen corresponding path program 1 times [2022-12-13 21:21:36,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:21:36,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010321979] [2022-12-13 21:21:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:36,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:21:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 21:21:36,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:21:36,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010321979] [2022-12-13 21:21:36,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010321979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:21:36,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:21:36,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:21:36,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947352746] [2022-12-13 21:21:36,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:21:36,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:21:36,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:21:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:21:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:21:36,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 21:21:36,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 105 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 615.3333333333334) internal successors, (1846), 3 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:36,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:21:36,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 21:21:36,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:21:50,498 INFO L130 PetriNetUnfolder]: 89433/126740 cut-off events. [2022-12-13 21:21:50,498 INFO L131 PetriNetUnfolder]: For 993/993 co-relation queries the response was YES. [2022-12-13 21:21:50,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258919 conditions, 126740 events. 89433/126740 cut-off events. For 993/993 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 904215 event pairs, 76500 based on Foata normal form. 8/66812 useless extension candidates. Maximal degree in co-relation 258909. Up to 126716 conditions per place. [2022-12-13 21:21:51,275 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 92 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 21:21:51,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 603 flow [2022-12-13 21:21:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:21:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:21:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1894 transitions. [2022-12-13 21:21:51,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43212411590235 [2022-12-13 21:21:51,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1894 transitions. [2022-12-13 21:21:51,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1894 transitions. [2022-12-13 21:21:51,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:21:51,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1894 transitions. [2022-12-13 21:21:51,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 631.3333333333334) internal successors, (1894), 3 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:51,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:51,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:51,284 INFO L175 Difference]: Start difference. First operand has 81 places, 105 transitions, 498 flow. Second operand 3 states and 1894 transitions. [2022-12-13 21:21:51,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 603 flow [2022-12-13 21:21:51,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 573 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 21:21:51,286 INFO L231 Difference]: Finished difference. Result has 78 places, 93 transitions, 389 flow [2022-12-13 21:21:51,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=78, PETRI_TRANSITIONS=93} [2022-12-13 21:21:51,287 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2022-12-13 21:21:51,287 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 93 transitions, 389 flow [2022-12-13 21:21:51,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 615.3333333333334) internal successors, (1846), 3 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:51,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:21:51,288 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:21:51,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:21:51,288 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:21:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash -906786641, now seen corresponding path program 2 times [2022-12-13 21:21:51,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:21:51,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497480268] [2022-12-13 21:21:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:21:51,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:21:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:21:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 21:21:51,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:21:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497480268] [2022-12-13 21:21:51,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497480268] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:21:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620211822] [2022-12-13 21:21:51,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:21:51,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:21:51,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:21:51,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:21:51,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:21:51,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:21:51,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:21:51,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:21:51,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:21:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 21:21:51,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:21:51,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620211822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:21:51,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:21:51,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 21:21:51,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160151597] [2022-12-13 21:21:51,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:21:51,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:21:51,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:21:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:21:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:21:51,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 21:21:51,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 93 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 618.0) internal successors, (1854), 3 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:51,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:21:51,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 21:21:51,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:22:05,100 INFO L130 PetriNetUnfolder]: 89433/126728 cut-off events. [2022-12-13 21:22:05,100 INFO L131 PetriNetUnfolder]: For 1020/1020 co-relation queries the response was YES. [2022-12-13 21:22:05,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258780 conditions, 126728 events. 89433/126728 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 904129 event pairs, 76500 based on Foata normal form. 12/66812 useless extension candidates. Maximal degree in co-relation 258769. Up to 126704 conditions per place. [2022-12-13 21:22:06,030 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2022-12-13 21:22:06,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 90 transitions, 539 flow [2022-12-13 21:22:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:22:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:22:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1900 transitions. [2022-12-13 21:22:06,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43349304129591604 [2022-12-13 21:22:06,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1900 transitions. [2022-12-13 21:22:06,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1900 transitions. [2022-12-13 21:22:06,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:22:06,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1900 transitions. [2022-12-13 21:22:06,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 633.3333333333334) internal successors, (1900), 3 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:06,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:06,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:06,039 INFO L175 Difference]: Start difference. First operand has 78 places, 93 transitions, 389 flow. Second operand 3 states and 1900 transitions. [2022-12-13 21:22:06,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 90 transitions, 539 flow [2022-12-13 21:22:06,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 496 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 21:22:06,041 INFO L231 Difference]: Finished difference. Result has 72 places, 90 transitions, 318 flow [2022-12-13 21:22:06,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=72, PETRI_TRANSITIONS=90} [2022-12-13 21:22:06,042 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2022-12-13 21:22:06,042 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 90 transitions, 318 flow [2022-12-13 21:22:06,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 618.0) internal successors, (1854), 3 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:06,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:22:06,042 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:22:06,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:22:06,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:22:06,244 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:22:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:06,245 INFO L85 PathProgramCache]: Analyzing trace with hash 737115981, now seen corresponding path program 1 times [2022-12-13 21:22:06,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:06,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885180732] [2022-12-13 21:22:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:06,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:22:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:22:06,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:22:06,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885180732] [2022-12-13 21:22:06,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885180732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:22:06,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:22:06,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:22:06,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741772422] [2022-12-13 21:22:06,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:22:06,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:22:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:22:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:22:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:22:06,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 21:22:06,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 90 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 607.0) internal successors, (2428), 4 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:06,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:22:06,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 21:22:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:22:19,565 INFO L130 PetriNetUnfolder]: 89429/126724 cut-off events. [2022-12-13 21:22:19,566 INFO L131 PetriNetUnfolder]: For 973/973 co-relation queries the response was YES. [2022-12-13 21:22:19,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258684 conditions, 126724 events. 89429/126724 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 904055 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 258677. Up to 126720 conditions per place. [2022-12-13 21:22:20,299 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 86 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2022-12-13 21:22:20,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 492 flow [2022-12-13 21:22:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:22:20,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:22:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2466 transitions. [2022-12-13 21:22:20,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4219712525667351 [2022-12-13 21:22:20,304 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2466 transitions. [2022-12-13 21:22:20,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2466 transitions. [2022-12-13 21:22:20,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:22:20,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2466 transitions. [2022-12-13 21:22:20,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 616.5) internal successors, (2466), 4 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:20,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:20,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:20,310 INFO L175 Difference]: Start difference. First operand has 72 places, 90 transitions, 318 flow. Second operand 4 states and 2466 transitions. [2022-12-13 21:22:20,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 492 flow [2022-12-13 21:22:20,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 89 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:22:20,312 INFO L231 Difference]: Finished difference. Result has 74 places, 89 transitions, 319 flow [2022-12-13 21:22:20,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=89} [2022-12-13 21:22:20,312 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2022-12-13 21:22:20,312 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 89 transitions, 319 flow [2022-12-13 21:22:20,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 607.0) internal successors, (2428), 4 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:20,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:22:20,313 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:22:20,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 21:22:20,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:22:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash 36776986, now seen corresponding path program 1 times [2022-12-13 21:22:20,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:20,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945848500] [2022-12-13 21:22:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:20,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:22:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 21:22:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:22:20,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945848500] [2022-12-13 21:22:20,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945848500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:22:20,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:22:20,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:22:20,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451622042] [2022-12-13 21:22:20,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:22:20,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:22:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:22:20,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:22:20,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:22:20,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 21:22:20,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 89 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 607.25) internal successors, (2429), 4 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:20,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:22:20,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 21:22:20,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:22:33,626 INFO L130 PetriNetUnfolder]: 89425/126720 cut-off events. [2022-12-13 21:22:33,626 INFO L131 PetriNetUnfolder]: For 973/973 co-relation queries the response was YES. [2022-12-13 21:22:34,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258681 conditions, 126720 events. 89425/126720 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 903961 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 258674. Up to 126704 conditions per place. [2022-12-13 21:22:34,368 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 82 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2022-12-13 21:22:34,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 491 flow [2022-12-13 21:22:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:22:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:22:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2466 transitions. [2022-12-13 21:22:34,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4219712525667351 [2022-12-13 21:22:34,372 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2466 transitions. [2022-12-13 21:22:34,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2466 transitions. [2022-12-13 21:22:34,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:22:34,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2466 transitions. [2022-12-13 21:22:34,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 616.5) internal successors, (2466), 4 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:34,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:34,378 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:34,378 INFO L175 Difference]: Start difference. First operand has 74 places, 89 transitions, 319 flow. Second operand 4 states and 2466 transitions. [2022-12-13 21:22:34,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 491 flow [2022-12-13 21:22:34,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 88 transitions, 485 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:22:34,380 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 321 flow [2022-12-13 21:22:34,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2022-12-13 21:22:34,381 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2022-12-13 21:22:34,381 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 321 flow [2022-12-13 21:22:34,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 607.25) internal successors, (2429), 4 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:34,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:22:34,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:22:34,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 21:22:34,381 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:22:34,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1303977875, now seen corresponding path program 1 times [2022-12-13 21:22:34,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:34,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321171665] [2022-12-13 21:22:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:34,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:22:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 21:22:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:22:34,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321171665] [2022-12-13 21:22:34,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321171665] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:22:34,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904845916] [2022-12-13 21:22:34,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:34,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:22:34,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:34,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:22:34,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:22:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:22:34,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:22:34,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:22:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 21:22:34,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:22:34,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904845916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:22:34,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:22:34,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 21:22:34,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217975861] [2022-12-13 21:22:34,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:22:34,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:22:34,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:22:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:22:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:22:34,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 21:22:34,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 607.5) internal successors, (2430), 4 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:34,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:22:34,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 21:22:34,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:22:45,579 INFO L130 PetriNetUnfolder]: 71549/101400 cut-off events. [2022-12-13 21:22:45,579 INFO L131 PetriNetUnfolder]: For 778/778 co-relation queries the response was YES. [2022-12-13 21:22:45,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207037 conditions, 101400 events. 71549/101400 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 3836. Compared 708192 event pairs, 61200 based on Foata normal form. 4/53452 useless extension candidates. Maximal degree in co-relation 207030. Up to 101384 conditions per place. [2022-12-13 21:22:46,222 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 82 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2022-12-13 21:22:46,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 497 flow [2022-12-13 21:22:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:22:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:22:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2466 transitions. [2022-12-13 21:22:46,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4219712525667351 [2022-12-13 21:22:46,227 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2466 transitions. [2022-12-13 21:22:46,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2466 transitions. [2022-12-13 21:22:46,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:22:46,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2466 transitions. [2022-12-13 21:22:46,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 616.5) internal successors, (2466), 4 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:46,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:46,233 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:46,233 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 321 flow. Second operand 4 states and 2466 transitions. [2022-12-13 21:22:46,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 497 flow [2022-12-13 21:22:46,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 488 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:22:46,235 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 331 flow [2022-12-13 21:22:46,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2022-12-13 21:22:46,236 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2022-12-13 21:22:46,236 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 331 flow [2022-12-13 21:22:46,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 607.5) internal successors, (2430), 4 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:46,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:22:46,236 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:22:46,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 21:22:46,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 21:22:46,438 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 21:22:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1041130099, now seen corresponding path program 1 times [2022-12-13 21:22:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:22:46,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281378025] [2022-12-13 21:22:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:46,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:22:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:22:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:22:47,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:22:47,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281378025] [2022-12-13 21:22:47,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281378025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:22:47,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839576585] [2022-12-13 21:22:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:22:47,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:22:47,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:22:47,649 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:22:47,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5382a433-08f6-4b08-8c61-42e5080b9656/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 21:22:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:22:47,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 21:22:47,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:22:47,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:22:47,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:22:47,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:22:47,871 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 21:22:47,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-12-13 21:22:47,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:22:48,000 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:22:48,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:22:48,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,097 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:22:48,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:22:48,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,241 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 21:22:48,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 21:22:48,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,363 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 21:22:48,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 21:22:48,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,436 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 21:22:48,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:22:48,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:22:48,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:22:48,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:22:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:22:48,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:22:51,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:22:51,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2022-12-13 21:22:51,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:22:51,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86147 treesize of output 85639 [2022-12-13 21:22:52,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85622 treesize of output 84086 [2022-12-13 21:22:52,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84086 treesize of output 71798 [2022-12-13 21:22:52,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71798 treesize of output 65654 [2022-12-13 21:22:53,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65654 treesize of output 64886 [2022-12-13 21:22:53,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64886 treesize of output 61814 [2022-12-13 21:22:53,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31098 treesize of output 30714