./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/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_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/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_babfdec7-d3a4-4b56-930f-82bebf11e73c/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 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:10:06,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:10:06,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:10:06,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:10:06,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:10:06,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:10:06,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:10:06,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:10:06,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:10:06,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:10:06,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:10:06,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:10:06,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:10:06,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:10:06,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:10:06,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:10:06,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:10:06,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:10:06,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:10:06,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:10:06,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:10:06,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:10:06,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:10:06,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:10:06,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:10:06,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:10:06,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:10:06,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:10:06,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:10:06,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:10:06,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:10:06,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:10:06,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:10:06,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:10:06,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:10:06,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:10:06,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:10:06,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:10:06,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:10:06,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:10:06,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:10:06,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:10:06,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:10:06,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:10:06,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:10:06,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:10:06,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:10:06,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:10:06,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:10:06,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:10:06,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:10:06,344 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:10:06,345 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:10:06,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:10:06,345 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:10:06,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:10:06,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:10:06,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:10:06,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:10:06,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:10:06,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:10:06,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:10:06,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:10:06,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:10:06,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:10:06,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:10:06,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:10:06,346 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:10:06,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:10:06,346 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:10:06,346 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_babfdec7-d3a4-4b56-930f-82bebf11e73c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-12-13 19:10:06,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:10:06,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:10:06,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:10:06,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:10:06,531 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:10:06,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-12-13 19:10:09,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:10:09,237 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:10:09,238 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-12-13 19:10:09,243 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/data/d30566e2c/a873fce2dce84caf9ba796957cecc270/FLAG626e52a70 [2022-12-13 19:10:09,253 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/data/d30566e2c/a873fce2dce84caf9ba796957cecc270 [2022-12-13 19:10:09,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:10:09,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:10:09,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:10:09,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:10:09,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:10:09,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f850876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09, skipping insertion in model container [2022-12-13 19:10:09,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:10:09,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:10:09,405 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_babfdec7-d3a4-4b56-930f-82bebf11e73c/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-12-13 19:10:09,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:10:09,417 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:10:09,435 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_babfdec7-d3a4-4b56-930f-82bebf11e73c/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-12-13 19:10:09,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:10:09,448 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:10:09,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09 WrapperNode [2022-12-13 19:10:09,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:10:09,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:10:09,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:10:09,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:10:09,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,482 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 250 [2022-12-13 19:10:09,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:10:09,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:10:09,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:10:09,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:10:09,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:10:09,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:10:09,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:10:09,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:10:09,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (1/1) ... [2022-12-13 19:10:09,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:10:09,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:09,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:10:09,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:10:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:10:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:10:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:10:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:10:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:10:09,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:10:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:10:09,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:10:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:10:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:10:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:10:09,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:10:09,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:10:09,571 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:10:09,656 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:10:09,658 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:10:10,009 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:10:10,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:10:10,022 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 19:10:10,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:10 BoogieIcfgContainer [2022-12-13 19:10:10,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:10:10,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:10:10,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:10:10,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:10:10,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:10:09" (1/3) ... [2022-12-13 19:10:10,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8c91ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:10:10, skipping insertion in model container [2022-12-13 19:10:10,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:09" (2/3) ... [2022-12-13 19:10:10,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8c91ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:10:10, skipping insertion in model container [2022-12-13 19:10:10,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:10" (3/3) ... [2022-12-13 19:10:10,033 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-12-13 19:10:10,042 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:10:10,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:10:10,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-12-13 19:10:10,052 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:10:10,133 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:10:10,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 332 transitions, 680 flow [2022-12-13 19:10:10,241 INFO L130 PetriNetUnfolder]: 23/330 cut-off events. [2022-12-13 19:10:10,241 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:10:10,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 330 events. 23/330 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 727 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 206. Up to 2 conditions per place. [2022-12-13 19:10:10,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 332 transitions, 680 flow [2022-12-13 19:10:10,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 312 transitions, 636 flow [2022-12-13 19:10:10,255 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:10:10,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 312 transitions, 636 flow [2022-12-13 19:10:10,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 312 transitions, 636 flow [2022-12-13 19:10:10,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 312 transitions, 636 flow [2022-12-13 19:10:10,314 INFO L130 PetriNetUnfolder]: 22/312 cut-off events. [2022-12-13 19:10:10,314 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:10:10,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 312 events. 22/312 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 723 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 206. Up to 2 conditions per place. [2022-12-13 19:10:10,323 INFO L119 LiptonReduction]: Number of co-enabled transitions 21312 [2022-12-13 19:10:22,041 INFO L134 LiptonReduction]: Checked pairs total: 20551 [2022-12-13 19:10:22,041 INFO L136 LiptonReduction]: Total number of compositions: 402 [2022-12-13 19:10:22,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:10:22,056 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;@51780ac5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:10:22,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-12-13 19:10:22,057 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 19:10:22,058 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:10:22,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:22,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:10:22,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash 43935, now seen corresponding path program 1 times [2022-12-13 19:10:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:22,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089819350] [2022-12-13 19:10:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:22,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:22,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089819350] [2022-12-13 19:10:22,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089819350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:22,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:22,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:10:22,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804033494] [2022-12-13 19:10:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:22,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:22,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 734 [2022-12-13 19:10:22,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:22,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 734 [2022-12-13 19:10:22,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:22,527 INFO L130 PetriNetUnfolder]: 451/779 cut-off events. [2022-12-13 19:10:22,527 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-13 19:10:22,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 779 events. 451/779 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 3630 event pairs, 378 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 720. Up to 392 conditions per place. [2022-12-13 19:10:22,533 INFO L137 encePairwiseOnDemand]: 722/734 looper letters, 49 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2022-12-13 19:10:22,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 53 transitions, 236 flow [2022-12-13 19:10:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2022-12-13 19:10:22,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4518619436875568 [2022-12-13 19:10:22,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2022-12-13 19:10:22,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2022-12-13 19:10:22,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:22,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2022-12-13 19:10:22,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,572 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 995 transitions. [2022-12-13 19:10:22,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 53 transitions, 236 flow [2022-12-13 19:10:22,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 53 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 19:10:22,576 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 71 flow [2022-12-13 19:10:22,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2022-12-13 19:10:22,580 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -9 predicate places. [2022-12-13 19:10:22,580 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 71 flow [2022-12-13 19:10:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:22,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:10:22,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:10:22,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1365744, now seen corresponding path program 1 times [2022-12-13 19:10:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:22,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332247506] [2022-12-13 19:10:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:22,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:22,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332247506] [2022-12-13 19:10:22,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332247506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:22,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:22,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:10:22,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500462050] [2022-12-13 19:10:22,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:22,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:22,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:22,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 734 [2022-12-13 19:10:22,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:22,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 734 [2022-12-13 19:10:22,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:22,826 INFO L130 PetriNetUnfolder]: 451/776 cut-off events. [2022-12-13 19:10:22,826 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 19:10:22,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579 conditions, 776 events. 451/776 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 3693 event pairs, 378 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 787. Up to 776 conditions per place. [2022-12-13 19:10:22,829 INFO L137 encePairwiseOnDemand]: 732/734 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 19:10:22,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 121 flow [2022-12-13 19:10:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2022-12-13 19:10:22,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4318801089918256 [2022-12-13 19:10:22,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2022-12-13 19:10:22,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2022-12-13 19:10:22,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:22,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2022-12-13 19:10:22,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,837 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 71 flow. Second operand 3 states and 951 transitions. [2022-12-13 19:10:22,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 121 flow [2022-12-13 19:10:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:22,838 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 67 flow [2022-12-13 19:10:22,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2022-12-13 19:10:22,839 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -10 predicate places. [2022-12-13 19:10:22,839 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 67 flow [2022-12-13 19:10:22,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:22,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:22,840 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:10:22,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:10:22,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1365792, now seen corresponding path program 1 times [2022-12-13 19:10:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:22,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490272942] [2022-12-13 19:10:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:22,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:22,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490272942] [2022-12-13 19:10:22,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490272942] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:22,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846125023] [2022-12-13 19:10:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:22,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:22,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:22,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:22,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:10:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:22,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:10:22,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:23,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:10:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:23,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846125023] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:10:23,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:10:23,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 19:10:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910876290] [2022-12-13 19:10:23,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:10:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:10:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:10:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:10:23,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 734 [2022-12-13 19:10:23,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 67 flow. Second operand has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:23,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 734 [2022-12-13 19:10:23,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:23,479 INFO L130 PetriNetUnfolder]: 1126/1937 cut-off events. [2022-12-13 19:10:23,480 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 19:10:23,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3931 conditions, 1937 events. 1126/1937 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10871 event pairs, 945 based on Foata normal form. 0/856 useless extension candidates. Maximal degree in co-relation 3923. Up to 390 conditions per place. [2022-12-13 19:10:23,485 INFO L137 encePairwiseOnDemand]: 731/734 looper letters, 117 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2022-12-13 19:10:23,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 122 transitions, 519 flow [2022-12-13 19:10:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:10:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:10:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1973 transitions. [2022-12-13 19:10:23,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44800181653042687 [2022-12-13 19:10:23,489 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1973 transitions. [2022-12-13 19:10:23,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1973 transitions. [2022-12-13 19:10:23,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:23,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1973 transitions. [2022-12-13 19:10:23,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 328.8333333333333) internal successors, (1973), 6 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 734.0) internal successors, (5138), 7 states have internal predecessors, (5138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,498 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 734.0) internal successors, (5138), 7 states have internal predecessors, (5138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,498 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 67 flow. Second operand 6 states and 1973 transitions. [2022-12-13 19:10:23,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 122 transitions, 519 flow [2022-12-13 19:10:23,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 122 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:23,500 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 102 flow [2022-12-13 19:10:23,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2022-12-13 19:10:23,501 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2022-12-13 19:10:23,501 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 102 flow [2022-12-13 19:10:23,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:23,502 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:10:23,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:10:23,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:23,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:23,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:23,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1311578556, now seen corresponding path program 1 times [2022-12-13 19:10:23,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:23,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614622653] [2022-12-13 19:10:23,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:23,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:23,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:23,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614622653] [2022-12-13 19:10:23,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614622653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:23,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:23,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:10:23,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590572871] [2022-12-13 19:10:23,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:23,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:23,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:23,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:23,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 734 [2022-12-13 19:10:23,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:23,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:23,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 734 [2022-12-13 19:10:23,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:24,166 INFO L130 PetriNetUnfolder]: 1466/2537 cut-off events. [2022-12-13 19:10:24,166 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-13 19:10:24,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5156 conditions, 2537 events. 1466/2537 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 15495 event pairs, 945 based on Foata normal form. 0/1187 useless extension candidates. Maximal degree in co-relation 5144. Up to 1938 conditions per place. [2022-12-13 19:10:24,174 INFO L137 encePairwiseOnDemand]: 727/734 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 19:10:24,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 224 flow [2022-12-13 19:10:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 967 transitions. [2022-12-13 19:10:24,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4391462306993642 [2022-12-13 19:10:24,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 967 transitions. [2022-12-13 19:10:24,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 967 transitions. [2022-12-13 19:10:24,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:24,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 967 transitions. [2022-12-13 19:10:24,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,181 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 102 flow. Second operand 3 states and 967 transitions. [2022-12-13 19:10:24,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 224 flow [2022-12-13 19:10:24,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 216 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:24,183 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 114 flow [2022-12-13 19:10:24,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2022-12-13 19:10:24,183 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2022-12-13 19:10:24,183 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 114 flow [2022-12-13 19:10:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:24,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:10:24,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:10:24,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:24,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:24,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2004229906, now seen corresponding path program 1 times [2022-12-13 19:10:24,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:24,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163066461] [2022-12-13 19:10:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:24,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:24,239 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 19:10:24,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:24,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163066461] [2022-12-13 19:10:24,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163066461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:24,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:24,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:10:24,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101320048] [2022-12-13 19:10:24,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:24,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:24,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:24,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:24,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:24,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 734 [2022-12-13 19:10:24,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:24,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 734 [2022-12-13 19:10:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:24,551 INFO L130 PetriNetUnfolder]: 1173/2031 cut-off events. [2022-12-13 19:10:24,551 INFO L131 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2022-12-13 19:10:24,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 2031 events. 1173/2031 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 11735 event pairs, 1004 based on Foata normal form. 1/1096 useless extension candidates. Maximal degree in co-relation 4766. Up to 2031 conditions per place. [2022-12-13 19:10:24,559 INFO L137 encePairwiseOnDemand]: 731/734 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-12-13 19:10:24,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 176 flow [2022-12-13 19:10:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 949 transitions. [2022-12-13 19:10:24,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43097184377838327 [2022-12-13 19:10:24,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 949 transitions. [2022-12-13 19:10:24,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 949 transitions. [2022-12-13 19:10:24,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:24,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 949 transitions. [2022-12-13 19:10:24,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,568 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 114 flow. Second operand 3 states and 949 transitions. [2022-12-13 19:10:24,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 176 flow [2022-12-13 19:10:24,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 172 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:24,570 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 118 flow [2022-12-13 19:10:24,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2022-12-13 19:10:24,570 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-12-13 19:10:24,570 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 118 flow [2022-12-13 19:10:24,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:24,571 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 19:10:24,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:10:24,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2035906575, now seen corresponding path program 2 times [2022-12-13 19:10:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:24,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015102427] [2022-12-13 19:10:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:10:24,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:24,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015102427] [2022-12-13 19:10:24,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015102427] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:24,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849379492] [2022-12-13 19:10:24,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:10:24,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:24,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:24,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:24,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:10:24,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:10:24,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:10:24,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:10:24,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:10:24,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:10:24,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849379492] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:24,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:10:24,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 19:10:24,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171276140] [2022-12-13 19:10:24,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:24,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:24,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:24,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:10:24,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 734 [2022-12-13 19:10:24,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:24,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:24,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 734 [2022-12-13 19:10:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:24,992 INFO L130 PetriNetUnfolder]: 1173/2030 cut-off events. [2022-12-13 19:10:24,992 INFO L131 PetriNetUnfolder]: For 260/260 co-relation queries the response was YES. [2022-12-13 19:10:24,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4708 conditions, 2030 events. 1173/2030 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11671 event pairs, 1004 based on Foata normal form. 1/1095 useless extension candidates. Maximal degree in co-relation 4693. Up to 2030 conditions per place. [2022-12-13 19:10:24,998 INFO L137 encePairwiseOnDemand]: 732/734 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2022-12-13 19:10:24,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 168 flow [2022-12-13 19:10:24,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2022-12-13 19:10:25,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43278837420526794 [2022-12-13 19:10:25,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2022-12-13 19:10:25,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2022-12-13 19:10:25,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:25,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2022-12-13 19:10:25,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,006 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 118 flow. Second operand 3 states and 953 transitions. [2022-12-13 19:10:25,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 168 flow [2022-12-13 19:10:25,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 154 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-12-13 19:10:25,008 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 96 flow [2022-12-13 19:10:25,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2022-12-13 19:10:25,009 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2022-12-13 19:10:25,009 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 96 flow [2022-12-13 19:10:25,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:25,010 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:25,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:10:25,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:25,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:25,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:25,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1343079967, now seen corresponding path program 1 times [2022-12-13 19:10:25,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:25,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040555567] [2022-12-13 19:10:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:25,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:25,262 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 19:10:25,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040555567] [2022-12-13 19:10:25,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040555567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658002959] [2022-12-13 19:10:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:25,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:25,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:25,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:25,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:10:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:25,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:10:25,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:25,350 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 19:10:25,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:10:25,363 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 19:10:25,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658002959] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:10:25,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:10:25,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-12-13 19:10:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615119301] [2022-12-13 19:10:25,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:10:25,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:10:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:10:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:10:25,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 734 [2022-12-13 19:10:25,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 96 flow. Second operand has 8 states, 8 states have (on average 303.125) internal successors, (2425), 8 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:25,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 734 [2022-12-13 19:10:25,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:25,696 INFO L130 PetriNetUnfolder]: 759/1294 cut-off events. [2022-12-13 19:10:25,696 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-13 19:10:25,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 1294 events. 759/1294 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6991 event pairs, 330 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 2979. Up to 688 conditions per place. [2022-12-13 19:10:25,700 INFO L137 encePairwiseOnDemand]: 724/734 looper letters, 52 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2022-12-13 19:10:25,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 284 flow [2022-12-13 19:10:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:10:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:10:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2172 transitions. [2022-12-13 19:10:25,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4227325807707279 [2022-12-13 19:10:25,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2172 transitions. [2022-12-13 19:10:25,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2172 transitions. [2022-12-13 19:10:25,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:25,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2172 transitions. [2022-12-13 19:10:25,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 310.2857142857143) internal successors, (2172), 7 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 734.0) internal successors, (5872), 8 states have internal predecessors, (5872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,715 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 734.0) internal successors, (5872), 8 states have internal predecessors, (5872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,715 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 96 flow. Second operand 7 states and 2172 transitions. [2022-12-13 19:10:25,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 284 flow [2022-12-13 19:10:25,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 279 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:25,716 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 143 flow [2022-12-13 19:10:25,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2022-12-13 19:10:25,717 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2022-12-13 19:10:25,717 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 143 flow [2022-12-13 19:10:25,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.125) internal successors, (2425), 8 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:25,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:25,718 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:25,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:10:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:25,918 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1864752224, now seen corresponding path program 1 times [2022-12-13 19:10:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:25,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919944187] [2022-12-13 19:10:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:25,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:25,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919944187] [2022-12-13 19:10:25,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919944187] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:25,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657157718] [2022-12-13 19:10:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:25,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:25,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:25,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:25,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:10:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:26,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:10:26,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:26,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:10:26,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657157718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:26,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:10:26,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 19:10:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550323795] [2022-12-13 19:10:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:26,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:10:26,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:10:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:10:26,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 734 [2022-12-13 19:10:26,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:26,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 734 [2022-12-13 19:10:26,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:26,308 INFO L130 PetriNetUnfolder]: 671/1170 cut-off events. [2022-12-13 19:10:26,308 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 19:10:26,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3040 conditions, 1170 events. 671/1170 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6442 event pairs, 14 based on Foata normal form. 72/762 useless extension candidates. Maximal degree in co-relation 3024. Up to 868 conditions per place. [2022-12-13 19:10:26,312 INFO L137 encePairwiseOnDemand]: 731/734 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-12-13 19:10:26,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 292 flow [2022-12-13 19:10:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:10:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:10:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1279 transitions. [2022-12-13 19:10:26,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4356267029972752 [2022-12-13 19:10:26,316 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1279 transitions. [2022-12-13 19:10:26,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1279 transitions. [2022-12-13 19:10:26,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:26,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1279 transitions. [2022-12-13 19:10:26,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 734.0) internal successors, (3670), 5 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 734.0) internal successors, (3670), 5 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,324 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 143 flow. Second operand 4 states and 1279 transitions. [2022-12-13 19:10:26,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 292 flow [2022-12-13 19:10:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 274 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-12-13 19:10:26,326 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 115 flow [2022-12-13 19:10:26,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2022-12-13 19:10:26,327 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-12-13 19:10:26,327 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 115 flow [2022-12-13 19:10:26,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:26,328 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:26,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:10:26,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 19:10:26,529 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:26,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1971399208, now seen corresponding path program 1 times [2022-12-13 19:10:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:26,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053098766] [2022-12-13 19:10:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:26,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:26,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053098766] [2022-12-13 19:10:26,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053098766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:26,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:26,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:10:26,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233238999] [2022-12-13 19:10:26,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:26,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:26,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:26,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:26,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:26,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 734 [2022-12-13 19:10:26,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:26,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 734 [2022-12-13 19:10:26,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:26,952 INFO L130 PetriNetUnfolder]: 827/1438 cut-off events. [2022-12-13 19:10:26,952 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2022-12-13 19:10:26,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3627 conditions, 1438 events. 827/1438 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7727 event pairs, 578 based on Foata normal form. 0/870 useless extension candidates. Maximal degree in co-relation 3613. Up to 1171 conditions per place. [2022-12-13 19:10:26,957 INFO L137 encePairwiseOnDemand]: 727/734 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 19:10:26,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 264 flow [2022-12-13 19:10:26,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-12-13 19:10:26,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4368755676657584 [2022-12-13 19:10:26,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-12-13 19:10:26,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-12-13 19:10:26,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:26,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-12-13 19:10:26,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,967 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 115 flow. Second operand 3 states and 962 transitions. [2022-12-13 19:10:26,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 264 flow [2022-12-13 19:10:26,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:10:26,969 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 132 flow [2022-12-13 19:10:26,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2022-12-13 19:10:26,970 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2022-12-13 19:10:26,970 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 132 flow [2022-12-13 19:10:26,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:26,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:26,970 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-12-13 19:10:26,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:10:26,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1972742770, now seen corresponding path program 1 times [2022-12-13 19:10:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:26,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812455681] [2022-12-13 19:10:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:26,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:27,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:27,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812455681] [2022-12-13 19:10:27,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812455681] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:27,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271869305] [2022-12-13 19:10:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:27,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:27,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:27,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:27,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:10:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:27,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:10:27,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:27,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:10:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:27,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271869305] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:10:27,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:10:27,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-12-13 19:10:27,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200731019] [2022-12-13 19:10:27,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:10:27,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:10:27,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:27,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:10:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:10:27,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 734 [2022-12-13 19:10:27,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 308.6666666666667) internal successors, (1852), 6 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:27,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:27,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 734 [2022-12-13 19:10:27,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:27,557 INFO L130 PetriNetUnfolder]: 995/1734 cut-off events. [2022-12-13 19:10:27,557 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2022-12-13 19:10:27,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4880 conditions, 1734 events. 995/1734 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10015 event pairs, 414 based on Foata normal form. 0/1218 useless extension candidates. Maximal degree in co-relation 4865. Up to 847 conditions per place. [2022-12-13 19:10:27,563 INFO L137 encePairwiseOnDemand]: 728/734 looper letters, 73 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2022-12-13 19:10:27,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 77 transitions, 442 flow [2022-12-13 19:10:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:10:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:10:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1608 transitions. [2022-12-13 19:10:27,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43814713896457763 [2022-12-13 19:10:27,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1608 transitions. [2022-12-13 19:10:27,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1608 transitions. [2022-12-13 19:10:27,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:27,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1608 transitions. [2022-12-13 19:10:27,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:27,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 734.0) internal successors, (4404), 6 states have internal predecessors, (4404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:27,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 734.0) internal successors, (4404), 6 states have internal predecessors, (4404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:27,574 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 132 flow. Second operand 5 states and 1608 transitions. [2022-12-13 19:10:27,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 77 transitions, 442 flow [2022-12-13 19:10:27,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 77 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:27,576 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 156 flow [2022-12-13 19:10:27,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2022-12-13 19:10:27,576 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2022-12-13 19:10:27,576 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 156 flow [2022-12-13 19:10:27,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 308.6666666666667) internal successors, (1852), 6 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:27,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:27,577 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-12-13 19:10:27,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 19:10:27,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 19:10:27,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:27,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1025483485, now seen corresponding path program 2 times [2022-12-13 19:10:27,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:27,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985952589] [2022-12-13 19:10:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:27,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:10:27,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:27,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985952589] [2022-12-13 19:10:27,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985952589] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:27,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:27,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:10:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272506937] [2022-12-13 19:10:27,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:27,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:27,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:27,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:27,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:27,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 734 [2022-12-13 19:10:27,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:27,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:27,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 734 [2022-12-13 19:10:27,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:28,120 INFO L130 PetriNetUnfolder]: 843/1474 cut-off events. [2022-12-13 19:10:28,120 INFO L131 PetriNetUnfolder]: For 1000/1000 co-relation queries the response was YES. [2022-12-13 19:10:28,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4407 conditions, 1474 events. 843/1474 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7839 event pairs, 738 based on Foata normal form. 0/1098 useless extension candidates. Maximal degree in co-relation 4391. Up to 1474 conditions per place. [2022-12-13 19:10:28,125 INFO L137 encePairwiseOnDemand]: 731/734 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2022-12-13 19:10:28,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 204 flow [2022-12-13 19:10:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2022-12-13 19:10:28,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4318801089918256 [2022-12-13 19:10:28,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2022-12-13 19:10:28,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2022-12-13 19:10:28,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:28,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2022-12-13 19:10:28,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,132 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 156 flow. Second operand 3 states and 951 transitions. [2022-12-13 19:10:28,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 204 flow [2022-12-13 19:10:28,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 30 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 19:10:28,134 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 136 flow [2022-12-13 19:10:28,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2022-12-13 19:10:28,134 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2022-12-13 19:10:28,134 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 136 flow [2022-12-13 19:10:28,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:28,135 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:28,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:10:28,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash -983832266, now seen corresponding path program 1 times [2022-12-13 19:10:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:28,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960411175] [2022-12-13 19:10:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:28,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:28,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:28,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960411175] [2022-12-13 19:10:28,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960411175] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:28,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417161714] [2022-12-13 19:10:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:28,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:28,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:28,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:28,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:10:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:28,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:10:28,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:28,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:10:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:28,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417161714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:10:28,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:10:28,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 19:10:28,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188201376] [2022-12-13 19:10:28,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:10:28,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:10:28,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:10:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:10:28,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 734 [2022-12-13 19:10:28,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 309.3333333333333) internal successors, (1856), 6 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:28,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 734 [2022-12-13 19:10:28,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:28,712 INFO L130 PetriNetUnfolder]: 1323/2210 cut-off events. [2022-12-13 19:10:28,713 INFO L131 PetriNetUnfolder]: For 888/888 co-relation queries the response was YES. [2022-12-13 19:10:28,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6240 conditions, 2210 events. 1323/2210 cut-off events. For 888/888 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11945 event pairs, 486 based on Foata normal form. 0/1658 useless extension candidates. Maximal degree in co-relation 6223. Up to 1019 conditions per place. [2022-12-13 19:10:28,719 INFO L137 encePairwiseOnDemand]: 728/734 looper letters, 78 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2022-12-13 19:10:28,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 85 transitions, 576 flow [2022-12-13 19:10:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:10:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:10:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1914 transitions. [2022-12-13 19:10:28,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43460490463215257 [2022-12-13 19:10:28,722 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1914 transitions. [2022-12-13 19:10:28,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1914 transitions. [2022-12-13 19:10:28,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:28,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1914 transitions. [2022-12-13 19:10:28,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 734.0) internal successors, (5138), 7 states have internal predecessors, (5138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,727 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 734.0) internal successors, (5138), 7 states have internal predecessors, (5138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,727 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 136 flow. Second operand 6 states and 1914 transitions. [2022-12-13 19:10:28,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 85 transitions, 576 flow [2022-12-13 19:10:28,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 575 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:28,729 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 185 flow [2022-12-13 19:10:28,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2022-12-13 19:10:28,730 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2022-12-13 19:10:28,730 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 185 flow [2022-12-13 19:10:28,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 309.3333333333333) internal successors, (1856), 6 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:28,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:28,730 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-12-13 19:10:28,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:10:28,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:28,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1025483488, now seen corresponding path program 1 times [2022-12-13 19:10:28,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:28,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146371058] [2022-12-13 19:10:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:28,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:10:28,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:28,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146371058] [2022-12-13 19:10:28,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146371058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:28,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:28,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:10:28,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122776921] [2022-12-13 19:10:28,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:28,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:28,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:29,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 734 [2022-12-13 19:10:29,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:29,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 734 [2022-12-13 19:10:29,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:29,282 INFO L130 PetriNetUnfolder]: 1151/1922 cut-off events. [2022-12-13 19:10:29,282 INFO L131 PetriNetUnfolder]: For 1422/1422 co-relation queries the response was YES. [2022-12-13 19:10:29,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6288 conditions, 1922 events. 1151/1922 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9845 event pairs, 918 based on Foata normal form. 0/1638 useless extension candidates. Maximal degree in co-relation 6269. Up to 1922 conditions per place. [2022-12-13 19:10:29,288 INFO L137 encePairwiseOnDemand]: 731/734 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-12-13 19:10:29,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 233 flow [2022-12-13 19:10:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 949 transitions. [2022-12-13 19:10:29,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43097184377838327 [2022-12-13 19:10:29,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 949 transitions. [2022-12-13 19:10:29,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 949 transitions. [2022-12-13 19:10:29,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:29,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 949 transitions. [2022-12-13 19:10:29,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,293 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 185 flow. Second operand 3 states and 949 transitions. [2022-12-13 19:10:29,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 233 flow [2022-12-13 19:10:29,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 32 transitions, 223 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:29,295 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 161 flow [2022-12-13 19:10:29,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2022-12-13 19:10:29,295 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2022-12-13 19:10:29,295 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 161 flow [2022-12-13 19:10:29,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:29,296 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-12-13 19:10:29,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:10:29,296 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:29,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1025483514, now seen corresponding path program 1 times [2022-12-13 19:10:29,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:29,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409464104] [2022-12-13 19:10:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:10:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:29,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409464104] [2022-12-13 19:10:29,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409464104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:29,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:29,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:10:29,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802261107] [2022-12-13 19:10:29,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:29,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:29,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:29,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 734 [2022-12-13 19:10:29,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:29,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 734 [2022-12-13 19:10:29,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:29,592 INFO L130 PetriNetUnfolder]: 991/1654 cut-off events. [2022-12-13 19:10:29,592 INFO L131 PetriNetUnfolder]: For 1118/1118 co-relation queries the response was YES. [2022-12-13 19:10:29,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 1654 events. 991/1654 cut-off events. For 1118/1118 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8160 event pairs, 774 based on Foata normal form. 0/1494 useless extension candidates. Maximal degree in co-relation 4971. Up to 1654 conditions per place. [2022-12-13 19:10:29,596 INFO L137 encePairwiseOnDemand]: 731/734 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2022-12-13 19:10:29,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 30 transitions, 205 flow [2022-12-13 19:10:29,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2022-12-13 19:10:29,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.430063578564941 [2022-12-13 19:10:29,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2022-12-13 19:10:29,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2022-12-13 19:10:29,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:29,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2022-12-13 19:10:29,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,601 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 161 flow. Second operand 3 states and 947 transitions. [2022-12-13 19:10:29,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 30 transitions, 205 flow [2022-12-13 19:10:29,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 30 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:29,603 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 146 flow [2022-12-13 19:10:29,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2022-12-13 19:10:29,604 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2022-12-13 19:10:29,604 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 146 flow [2022-12-13 19:10:29,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:29,604 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-12-13 19:10:29,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:10:29,604 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1025483487, now seen corresponding path program 2 times [2022-12-13 19:10:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:29,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363656858] [2022-12-13 19:10:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:10:29,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:29,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363656858] [2022-12-13 19:10:29,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363656858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:29,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:10:29,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:10:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298738703] [2022-12-13 19:10:29,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:29,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:10:29,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:29,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:10:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:10:29,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 734 [2022-12-13 19:10:29,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:29,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 734 [2022-12-13 19:10:29,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:29,916 INFO L130 PetriNetUnfolder]: 843/1406 cut-off events. [2022-12-13 19:10:29,917 INFO L131 PetriNetUnfolder]: For 1010/1010 co-relation queries the response was YES. [2022-12-13 19:10:29,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 1406 events. 843/1406 cut-off events. For 1010/1010 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6677 event pairs, 642 based on Foata normal form. 52/1354 useless extension candidates. Maximal degree in co-relation 4061. Up to 1406 conditions per place. [2022-12-13 19:10:29,920 INFO L137 encePairwiseOnDemand]: 731/734 looper letters, 26 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2022-12-13 19:10:29,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 28 transitions, 186 flow [2022-12-13 19:10:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:10:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:10:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2022-12-13 19:10:29,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42915531335149865 [2022-12-13 19:10:29,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 945 transitions. [2022-12-13 19:10:29,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 945 transitions. [2022-12-13 19:10:29,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:29,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 945 transitions. [2022-12-13 19:10:29,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 734.0) internal successors, (2936), 4 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,925 INFO L175 Difference]: Start difference. First operand has 47 places, 30 transitions, 146 flow. Second operand 3 states and 945 transitions. [2022-12-13 19:10:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 28 transitions, 186 flow [2022-12-13 19:10:29,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 173 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 19:10:29,927 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 117 flow [2022-12-13 19:10:29,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2022-12-13 19:10:29,928 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2022-12-13 19:10:29,928 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 117 flow [2022-12-13 19:10:29,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:29,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:10:29,928 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:29,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:10:29,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 19:10:29,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash -983832277, now seen corresponding path program 1 times [2022-12-13 19:10:29,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:29,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413221516] [2022-12-13 19:10:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:29,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:29,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:10:29,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413221516] [2022-12-13 19:10:29,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413221516] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:10:29,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018187575] [2022-12-13 19:10:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:29,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:29,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:29,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:10:29,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:10:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:10:30,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:10:30,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:10:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:10:30,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:10:30,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018187575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:10:30,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:10:30,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 19:10:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910958403] [2022-12-13 19:10:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:10:30,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:10:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:10:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:10:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:10:30,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 734 [2022-12-13 19:10:30,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 309.25) internal successors, (1237), 4 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:30,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:10:30,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 734 [2022-12-13 19:10:30,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:10:30,179 INFO L130 PetriNetUnfolder]: 389/692 cut-off events. [2022-12-13 19:10:30,179 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2022-12-13 19:10:30,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1933 conditions, 692 events. 389/692 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3050 event pairs, 48 based on Foata normal form. 0/692 useless extension candidates. Maximal degree in co-relation 1913. Up to 418 conditions per place. [2022-12-13 19:10:30,180 INFO L137 encePairwiseOnDemand]: 731/734 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2022-12-13 19:10:30,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 265 flow [2022-12-13 19:10:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:10:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:10:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1256 transitions. [2022-12-13 19:10:30,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42779291553133514 [2022-12-13 19:10:30,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1256 transitions. [2022-12-13 19:10:30,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1256 transitions. [2022-12-13 19:10:30,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:10:30,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1256 transitions. [2022-12-13 19:10:30,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:30,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 734.0) internal successors, (3670), 5 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:30,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 734.0) internal successors, (3670), 5 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:30,187 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 117 flow. Second operand 4 states and 1256 transitions. [2022-12-13 19:10:30,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 265 flow [2022-12-13 19:10:30,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 258 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 19:10:30,189 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2022-12-13 19:10:30,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=734, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2022-12-13 19:10:30,190 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2022-12-13 19:10:30,190 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2022-12-13 19:10:30,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.25) internal successors, (1237), 4 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:10:30,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2022-12-13 19:10:30,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2022-12-13 19:10:30,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2022-12-13 19:10:30,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2022-12-13 19:10:30,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2022-12-13 19:10:30,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2022-12-13 19:10:30,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2022-12-13 19:10:30,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2022-12-13 19:10:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2022-12-13 19:10:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2022-12-13 19:10:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2022-12-13 19:10:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2022-12-13 19:10:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2022-12-13 19:10:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2022-12-13 19:10:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2022-12-13 19:10:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2022-12-13 19:10:30,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2022-12-13 19:10:30,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2022-12-13 19:10:30,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2022-12-13 19:10:30,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2022-12-13 19:10:30,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2022-12-13 19:10:30,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2022-12-13 19:10:30,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:10:30,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:10:30,398 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:30,402 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:10:30,402 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:10:30,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:10:30 BasicIcfg [2022-12-13 19:10:30,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:10:30,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:10:30,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:10:30,404 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:10:30,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:10" (3/4) ... [2022-12-13 19:10:30,406 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 19:10:30,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 19:10:30,411 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 19:10:30,413 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 19:10:30,414 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 19:10:30,414 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 19:10:30,414 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 19:10:30,437 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:10:30,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:10:30,438 INFO L158 Benchmark]: Toolchain (without parser) took 21181.76ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 106.8MB in the beginning and 119.1MB in the end (delta: -12.3MB). Peak memory consumption was 208.1MB. Max. memory is 16.1GB. [2022-12-13 19:10:30,438 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:10:30,438 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.12ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 94.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 19:10:30,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.39ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 92.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:10:30,439 INFO L158 Benchmark]: Boogie Preprocessor took 24.48ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 90.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:10:30,439 INFO L158 Benchmark]: RCFGBuilder took 516.90ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 111.7MB in the end (delta: -21.6MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2022-12-13 19:10:30,439 INFO L158 Benchmark]: TraceAbstraction took 20376.30ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 110.9MB in the beginning and 122.2MB in the end (delta: -11.3MB). Peak memory consumption was 205.4MB. Max. memory is 16.1GB. [2022-12-13 19:10:30,440 INFO L158 Benchmark]: Witness Printer took 33.17ms. Allocated memory is still 360.7MB. Free memory was 122.2MB in the beginning and 119.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 19:10:30,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.12ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 94.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.39ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 92.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.48ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 90.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 516.90ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 111.7MB in the end (delta: -21.6MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20376.30ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 110.9MB in the beginning and 122.2MB in the end (delta: -11.3MB). Peak memory consumption was 205.4MB. Max. memory is 16.1GB. * Witness Printer took 33.17ms. Allocated memory is still 360.7MB. Free memory was 122.2MB in the beginning and 119.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.8s, 297 PlacesBefore, 40 PlacesAfterwards, 312 TransitionsBefore, 36 TransitionsAfterwards, 21312 CoEnabledTransitionPairs, 8 FixpointIterations, 106 TrivialSequentialCompositions, 225 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 45 ConcurrentYvCompositions, 19 ChoiceCompositions, 402 TotalNumberOfCompositions, 20551 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20339, independent: 20325, independent conditional: 0, independent unconditional: 20325, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12550, independent: 12544, independent conditional: 0, independent unconditional: 12544, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 20339, independent: 7781, independent conditional: 0, independent unconditional: 7781, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 12550, unknown conditional: 0, unknown unconditional: 12550] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 488 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.2s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 926 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 680 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1493 IncrementalHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 66 mSDtfsCounter, 1493 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=12, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 184 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 430 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1129 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 27 InterpolantComputations, 12 PerfectInterpolantSequences, 138/161 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 19:10:30,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_babfdec7-d3a4-4b56-930f-82bebf11e73c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE