./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:05:17,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:05:17,772 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:05:17,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:05:17,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:05:17,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:05:17,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:05:17,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:05:17,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:05:17,806 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:05:17,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:05:17,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:05:17,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:05:17,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:05:17,809 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:05:17,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:05:17,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:05:17,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:05:17,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:05:17,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:05:17,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:05:17,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:05:17,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:05:17,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:05:17,814 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:05:17,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:05:17,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:05:17,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:05:17,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:05:17,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:05:17,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:05:17,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:05:17,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:05:17,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:05:17,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:05:17,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:05:17,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:05:17,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:05:17,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:05:17,819 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:05:17,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:05:17,820 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:05:17,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:05:17,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:05:17,820 INFO L153 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_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2023-11-29 03:05:18,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:05:18,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:05:18,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:05:18,074 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:05:18,074 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:05:18,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-29 03:05:20,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:05:20,935 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:05:20,935 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-29 03:05:20,943 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/data/9006ca5a1/1a159c7fea2b475a96aba3e26e8524fc/FLAGbb2b5188d [2023-11-29 03:05:20,955 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/data/9006ca5a1/1a159c7fea2b475a96aba3e26e8524fc [2023-11-29 03:05:20,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:05:20,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:05:20,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:05:20,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:05:20,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:05:20,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:05:20" (1/1) ... [2023-11-29 03:05:20,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539234ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:20, skipping insertion in model container [2023-11-29 03:05:20,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:05:20" (1/1) ... [2023-11-29 03:05:20,992 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:05:21,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:05:21,210 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:05:21,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:05:21,261 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:05:21,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21 WrapperNode [2023-11-29 03:05:21,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:05:21,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:05:21,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:05:21,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:05:21,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,311 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 220 [2023-11-29 03:05:21,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:05:21,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:05:21,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:05:21,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:05:21,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,350 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2023-11-29 03:05:21,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:05:21,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:05:21,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:05:21,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:05:21,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (1/1) ... [2023-11-29 03:05:21,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:05:21,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:21,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:05:21,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:05:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:05:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:05:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:05:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:05:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:05:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:05:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:05:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:05:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:05:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:05:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:05:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:05:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:05:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:05:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:05:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:05:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:05:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:05:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:05:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:05:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:05:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:05:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:05:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:05:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:05:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:05:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:05:21,446 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:05:21,575 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:05:21,578 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:05:21,978 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:05:22,285 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:05:22,285 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 03:05:22,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:05:22 BoogieIcfgContainer [2023-11-29 03:05:22,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:05:22,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:05:22,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:05:22,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:05:22,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:05:20" (1/3) ... [2023-11-29 03:05:22,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edbbdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:05:22, skipping insertion in model container [2023-11-29 03:05:22,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:21" (2/3) ... [2023-11-29 03:05:22,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edbbdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:05:22, skipping insertion in model container [2023-11-29 03:05:22,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:05:22" (3/3) ... [2023-11-29 03:05:22,293 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-11-29 03:05:22,300 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:05:22,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:05:22,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-29 03:05:22,309 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:05:22,359 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 03:05:22,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 149 flow [2023-11-29 03:05:22,431 INFO L124 PetriNetUnfolderBase]: 9/61 cut-off events. [2023-11-29 03:05:22,432 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 03:05:22,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 9/61 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-29 03:05:22,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 64 transitions, 149 flow [2023-11-29 03:05:22,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 133 flow [2023-11-29 03:05:22,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:05:22,457 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=LoopHeads, 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;@1f9f7327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:05:22,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-29 03:05:22,461 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:05:22,461 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 03:05:22,462 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:05:22,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:22,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 03:05:22,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:22,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash 793349, now seen corresponding path program 1 times [2023-11-29 03:05:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:22,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127691003] [2023-11-29 03:05:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:22,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:22,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127691003] [2023-11-29 03:05:22,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127691003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:22,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:22,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:05:22,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479653498] [2023-11-29 03:05:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:22,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:22,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-29 03:05:22,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:22,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:22,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-29 03:05:22,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:23,361 INFO L124 PetriNetUnfolderBase]: 1832/2832 cut-off events. [2023-11-29 03:05:23,361 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-29 03:05:23,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 2832 events. 1832/2832 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15190 event pairs, 1060 based on Foata normal form. 3/1916 useless extension candidates. Maximal degree in co-relation 4703. Up to 2422 conditions per place. [2023-11-29 03:05:23,388 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 43 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2023-11-29 03:05:23,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 257 flow [2023-11-29 03:05:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2023-11-29 03:05:23,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2023-11-29 03:05:23,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2023-11-29 03:05:23,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2023-11-29 03:05:23,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:23,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2023-11-29 03:05:23,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:23,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:23,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:23,413 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 133 flow. Second operand 4 states and 131 transitions. [2023-11-29 03:05:23,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 257 flow [2023-11-29 03:05:23,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 248 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:05:23,422 INFO L231 Difference]: Finished difference. Result has 61 places, 68 transitions, 212 flow [2023-11-29 03:05:23,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=68} [2023-11-29 03:05:23,428 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2023-11-29 03:05:23,428 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 68 transitions, 212 flow [2023-11-29 03:05:23,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:23,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:23,429 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:05:23,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:05:23,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:23,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2134355173, now seen corresponding path program 1 times [2023-11-29 03:05:23,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:23,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965232889] [2023-11-29 03:05:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:23,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965232889] [2023-11-29 03:05:23,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965232889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:05:23,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025082433] [2023-11-29 03:05:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:23,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:23,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:23,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:05:23,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:05:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:23,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:05:23,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:23,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:23,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025082433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:23,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:05:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 03:05:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241912718] [2023-11-29 03:05:23,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:05:23,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:23,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:05:23,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:05:23,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-29 03:05:23,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:23,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:23,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-29 03:05:23,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:24,169 INFO L124 PetriNetUnfolderBase]: 1832/2829 cut-off events. [2023-11-29 03:05:24,169 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-29 03:05:24,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5371 conditions, 2829 events. 1832/2829 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15196 event pairs, 1060 based on Foata normal form. 3/1918 useless extension candidates. Maximal degree in co-relation 5298. Up to 2407 conditions per place. [2023-11-29 03:05:24,187 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 33 selfloop transitions, 17 changer transitions 0/65 dead transitions. [2023-11-29 03:05:24,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 300 flow [2023-11-29 03:05:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:05:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:05:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2023-11-29 03:05:24,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2023-11-29 03:05:24,191 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 161 transitions. [2023-11-29 03:05:24,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 161 transitions. [2023-11-29 03:05:24,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:24,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 161 transitions. [2023-11-29 03:05:24,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:24,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:24,195 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:24,195 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 212 flow. Second operand 6 states and 161 transitions. [2023-11-29 03:05:24,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 300 flow [2023-11-29 03:05:24,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:05:24,198 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 234 flow [2023-11-29 03:05:24,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2023-11-29 03:05:24,199 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2023-11-29 03:05:24,199 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 234 flow [2023-11-29 03:05:24,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:24,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:24,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 03:05:24,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:05:24,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:24,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:24,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:24,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1740500130, now seen corresponding path program 1 times [2023-11-29 03:05:24,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:24,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80720140] [2023-11-29 03:05:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:24,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80720140] [2023-11-29 03:05:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80720140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:05:24,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590735774] [2023-11-29 03:05:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:24,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:24,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:24,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:05:24,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:05:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:24,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:05:24,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:24,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:05:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590735774] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:05:24,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:05:24,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 03:05:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263491446] [2023-11-29 03:05:24,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:05:24,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:05:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:05:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:05:24,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-29 03:05:24,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 234 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:24,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:24,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-29 03:05:24,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:25,218 INFO L124 PetriNetUnfolderBase]: 1841/2865 cut-off events. [2023-11-29 03:05:25,218 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-29 03:05:25,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 2865 events. 1841/2865 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15529 event pairs, 1060 based on Foata normal form. 9/1960 useless extension candidates. Maximal degree in co-relation 5300. Up to 2422 conditions per place. [2023-11-29 03:05:25,243 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 40 selfloop transitions, 37 changer transitions 0/92 dead transitions. [2023-11-29 03:05:25,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 562 flow [2023-11-29 03:05:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:05:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:05:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2023-11-29 03:05:25,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2023-11-29 03:05:25,247 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 266 transitions. [2023-11-29 03:05:25,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 266 transitions. [2023-11-29 03:05:25,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:25,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 266 transitions. [2023-11-29 03:05:25,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 26.6) internal successors, (266), 10 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 64.0) internal successors, (704), 11 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,251 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 64.0) internal successors, (704), 11 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,252 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 234 flow. Second operand 10 states and 266 transitions. [2023-11-29 03:05:25,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 562 flow [2023-11-29 03:05:25,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 479 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-29 03:05:25,257 INFO L231 Difference]: Finished difference. Result has 70 places, 92 transitions, 449 flow [2023-11-29 03:05:25,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=449, PETRI_PLACES=70, PETRI_TRANSITIONS=92} [2023-11-29 03:05:25,258 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2023-11-29 03:05:25,258 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 92 transitions, 449 flow [2023-11-29 03:05:25,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:25,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:25,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:05:25,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:25,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:25,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:25,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1084311092, now seen corresponding path program 1 times [2023-11-29 03:05:25,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:25,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868915617] [2023-11-29 03:05:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:25,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868915617] [2023-11-29 03:05:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868915617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:05:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540161560] [2023-11-29 03:05:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:25,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2023-11-29 03:05:25,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 92 transitions, 449 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:25,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2023-11-29 03:05:25,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:25,904 INFO L124 PetriNetUnfolderBase]: 2113/3230 cut-off events. [2023-11-29 03:05:25,904 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-29 03:05:25,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6270 conditions, 3230 events. 2113/3230 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 17563 event pairs, 894 based on Foata normal form. 86/2266 useless extension candidates. Maximal degree in co-relation 6172. Up to 2127 conditions per place. [2023-11-29 03:05:25,934 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 89 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-11-29 03:05:25,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 668 flow [2023-11-29 03:05:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2023-11-29 03:05:25,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56640625 [2023-11-29 03:05:25,939 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 145 transitions. [2023-11-29 03:05:25,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 145 transitions. [2023-11-29 03:05:25,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:25,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 145 transitions. [2023-11-29 03:05:25,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,942 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,942 INFO L175 Difference]: Start difference. First operand has 70 places, 92 transitions, 449 flow. Second operand 4 states and 145 transitions. [2023-11-29 03:05:25,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 668 flow [2023-11-29 03:05:25,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 108 transitions, 631 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 03:05:25,948 INFO L231 Difference]: Finished difference. Result has 70 places, 91 transitions, 416 flow [2023-11-29 03:05:25,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=416, PETRI_PLACES=70, PETRI_TRANSITIONS=91} [2023-11-29 03:05:25,949 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2023-11-29 03:05:25,949 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 91 transitions, 416 flow [2023-11-29 03:05:25,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:25,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:25,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:25,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:05:25,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:25,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash -746093671, now seen corresponding path program 1 times [2023-11-29 03:05:25,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:25,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789180557] [2023-11-29 03:05:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789180557] [2023-11-29 03:05:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789180557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:26,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:26,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:05:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788322875] [2023-11-29 03:05:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:26,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:26,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:26,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2023-11-29 03:05:26,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 416 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:26,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:26,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2023-11-29 03:05:26,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:26,557 INFO L124 PetriNetUnfolderBase]: 3372/4944 cut-off events. [2023-11-29 03:05:26,557 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-29 03:05:26,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10048 conditions, 4944 events. 3372/4944 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 26753 event pairs, 722 based on Foata normal form. 86/3772 useless extension candidates. Maximal degree in co-relation 9954. Up to 2529 conditions per place. [2023-11-29 03:05:26,598 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 116 selfloop transitions, 3 changer transitions 0/135 dead transitions. [2023-11-29 03:05:26,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 135 transitions, 754 flow [2023-11-29 03:05:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2023-11-29 03:05:26,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671875 [2023-11-29 03:05:26,599 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 172 transitions. [2023-11-29 03:05:26,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 172 transitions. [2023-11-29 03:05:26,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:26,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 172 transitions. [2023-11-29 03:05:26,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:26,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:26,602 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:26,602 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 416 flow. Second operand 4 states and 172 transitions. [2023-11-29 03:05:26,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 135 transitions, 754 flow [2023-11-29 03:05:26,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 135 transitions, 744 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:05:26,608 INFO L231 Difference]: Finished difference. Result has 72 places, 93 transitions, 430 flow [2023-11-29 03:05:26,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=72, PETRI_TRANSITIONS=93} [2023-11-29 03:05:26,609 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2023-11-29 03:05:26,609 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 93 transitions, 430 flow [2023-11-29 03:05:26,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:26,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:26,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:26,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:05:26,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:26,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1212426377, now seen corresponding path program 1 times [2023-11-29 03:05:26,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782181615] [2023-11-29 03:05:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:26,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782181615] [2023-11-29 03:05:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782181615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:05:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526223560] [2023-11-29 03:05:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:26,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:26,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2023-11-29 03:05:26,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:26,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:26,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2023-11-29 03:05:26,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:27,470 INFO L124 PetriNetUnfolderBase]: 5868/8589 cut-off events. [2023-11-29 03:05:27,470 INFO L125 PetriNetUnfolderBase]: For 1198/1310 co-relation queries the response was YES. [2023-11-29 03:05:27,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17907 conditions, 8589 events. 5868/8589 cut-off events. For 1198/1310 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 48871 event pairs, 1194 based on Foata normal form. 164/6638 useless extension candidates. Maximal degree in co-relation 17811. Up to 4781 conditions per place. [2023-11-29 03:05:27,566 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 121 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2023-11-29 03:05:27,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 139 transitions, 799 flow [2023-11-29 03:05:27,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2023-11-29 03:05:27,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671875 [2023-11-29 03:05:27,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 172 transitions. [2023-11-29 03:05:27,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 172 transitions. [2023-11-29 03:05:27,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:27,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 172 transitions. [2023-11-29 03:05:27,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:27,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:27,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:27,571 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 430 flow. Second operand 4 states and 172 transitions. [2023-11-29 03:05:27,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 139 transitions, 799 flow [2023-11-29 03:05:27,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 139 transitions, 795 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:05:27,576 INFO L231 Difference]: Finished difference. Result has 76 places, 95 transitions, 450 flow [2023-11-29 03:05:27,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=450, PETRI_PLACES=76, PETRI_TRANSITIONS=95} [2023-11-29 03:05:27,577 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 16 predicate places. [2023-11-29 03:05:27,578 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 95 transitions, 450 flow [2023-11-29 03:05:27,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:27,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:27,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:27,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:05:27,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:27,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash 565821141, now seen corresponding path program 1 times [2023-11-29 03:05:27,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:27,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902215031] [2023-11-29 03:05:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:27,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:27,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:27,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902215031] [2023-11-29 03:05:27,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902215031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:27,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:27,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:05:27,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796561440] [2023-11-29 03:05:27,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:27,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:27,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:27,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:27,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:27,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2023-11-29 03:05:27,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 95 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:27,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:27,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2023-11-29 03:05:27,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:28,681 INFO L124 PetriNetUnfolderBase]: 9128/13449 cut-off events. [2023-11-29 03:05:28,681 INFO L125 PetriNetUnfolderBase]: For 3663/4147 co-relation queries the response was YES. [2023-11-29 03:05:28,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29586 conditions, 13449 events. 9128/13449 cut-off events. For 3663/4147 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 80621 event pairs, 2307 based on Foata normal form. 248/11279 useless extension candidates. Maximal degree in co-relation 29488. Up to 6965 conditions per place. [2023-11-29 03:05:28,745 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 125 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2023-11-29 03:05:28,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 143 transitions, 848 flow [2023-11-29 03:05:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2023-11-29 03:05:28,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6640625 [2023-11-29 03:05:28,747 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 170 transitions. [2023-11-29 03:05:28,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 170 transitions. [2023-11-29 03:05:28,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:28,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 170 transitions. [2023-11-29 03:05:28,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:28,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:28,749 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:28,749 INFO L175 Difference]: Start difference. First operand has 76 places, 95 transitions, 450 flow. Second operand 4 states and 170 transitions. [2023-11-29 03:05:28,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 143 transitions, 848 flow [2023-11-29 03:05:28,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 143 transitions, 844 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:05:28,754 INFO L231 Difference]: Finished difference. Result has 80 places, 97 transitions, 470 flow [2023-11-29 03:05:28,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=80, PETRI_TRANSITIONS=97} [2023-11-29 03:05:28,754 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 20 predicate places. [2023-11-29 03:05:28,754 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 97 transitions, 470 flow [2023-11-29 03:05:28,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:28,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:28,755 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:28,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:05:28,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:28,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash -134004579, now seen corresponding path program 1 times [2023-11-29 03:05:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:28,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964057284] [2023-11-29 03:05:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:28,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:05:28,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:28,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964057284] [2023-11-29 03:05:28,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964057284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:28,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:28,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:05:28,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35978249] [2023-11-29 03:05:28,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:28,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:28,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:28,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:28,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2023-11-29 03:05:28,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 97 transitions, 470 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:28,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:28,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2023-11-29 03:05:28,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:30,155 INFO L124 PetriNetUnfolderBase]: 9970/15978 cut-off events. [2023-11-29 03:05:30,155 INFO L125 PetriNetUnfolderBase]: For 5374/5549 co-relation queries the response was YES. [2023-11-29 03:05:30,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36197 conditions, 15978 events. 9970/15978 cut-off events. For 5374/5549 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 111559 event pairs, 7246 based on Foata normal form. 0/14158 useless extension candidates. Maximal degree in co-relation 36040. Up to 10505 conditions per place. [2023-11-29 03:05:30,261 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 135 selfloop transitions, 3 changer transitions 0/155 dead transitions. [2023-11-29 03:05:30,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 155 transitions, 1018 flow [2023-11-29 03:05:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2023-11-29 03:05:30,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2023-11-29 03:05:30,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 168 transitions. [2023-11-29 03:05:30,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 168 transitions. [2023-11-29 03:05:30,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:30,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 168 transitions. [2023-11-29 03:05:30,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:30,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:30,265 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:30,265 INFO L175 Difference]: Start difference. First operand has 80 places, 97 transitions, 470 flow. Second operand 4 states and 168 transitions. [2023-11-29 03:05:30,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 155 transitions, 1018 flow [2023-11-29 03:05:30,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 155 transitions, 1015 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:05:30,276 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 477 flow [2023-11-29 03:05:30,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2023-11-29 03:05:30,277 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 23 predicate places. [2023-11-29 03:05:30,277 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 477 flow [2023-11-29 03:05:30,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:30,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:30,278 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:30,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:05:30,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:30,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1022608604, now seen corresponding path program 1 times [2023-11-29 03:05:30,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:30,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452102269] [2023-11-29 03:05:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:30,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:05:30,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452102269] [2023-11-29 03:05:30,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452102269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:30,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:30,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127640902] [2023-11-29 03:05:30,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:30,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:05:30,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:05:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:30,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2023-11-29 03:05:30,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 477 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:30,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:30,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2023-11-29 03:05:30,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:32,002 INFO L124 PetriNetUnfolderBase]: 12458/19782 cut-off events. [2023-11-29 03:05:32,003 INFO L125 PetriNetUnfolderBase]: For 6746/7206 co-relation queries the response was YES. [2023-11-29 03:05:32,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44976 conditions, 19782 events. 12458/19782 cut-off events. For 6746/7206 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 139857 event pairs, 5432 based on Foata normal form. 0/18168 useless extension candidates. Maximal degree in co-relation 44762. Up to 7095 conditions per place. [2023-11-29 03:05:32,087 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 139 selfloop transitions, 11 changer transitions 0/167 dead transitions. [2023-11-29 03:05:32,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 167 transitions, 1034 flow [2023-11-29 03:05:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:05:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:05:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2023-11-29 03:05:32,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276041666666666 [2023-11-29 03:05:32,089 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 241 transitions. [2023-11-29 03:05:32,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 241 transitions. [2023-11-29 03:05:32,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:32,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 241 transitions. [2023-11-29 03:05:32,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:32,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:32,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:32,091 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 477 flow. Second operand 6 states and 241 transitions. [2023-11-29 03:05:32,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 167 transitions, 1034 flow [2023-11-29 03:05:32,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 167 transitions, 1030 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 03:05:32,101 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 518 flow [2023-11-29 03:05:32,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=518, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2023-11-29 03:05:32,102 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 29 predicate places. [2023-11-29 03:05:32,102 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 518 flow [2023-11-29 03:05:32,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:32,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:32,103 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 03:05:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:05:32,103 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:32,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:32,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1396406220, now seen corresponding path program 2 times [2023-11-29 03:05:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:32,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161942861] [2023-11-29 03:05:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:32,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161942861] [2023-11-29 03:05:32,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161942861] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:05:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642288586] [2023-11-29 03:05:32,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:05:32,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:32,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:05:32,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:05:32,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:05:32,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:05:32,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:05:32,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:05:32,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:05:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:05:32,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642288586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:05:32,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:05:32,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 03:05:32,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358429910] [2023-11-29 03:05:32,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:05:32,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:05:32,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:05:32,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:05:32,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-29 03:05:32,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 518 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:32,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:32,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-29 03:05:32,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:34,585 INFO L124 PetriNetUnfolderBase]: 12465/20526 cut-off events. [2023-11-29 03:05:34,585 INFO L125 PetriNetUnfolderBase]: For 8223/8284 co-relation queries the response was YES. [2023-11-29 03:05:34,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47185 conditions, 20526 events. 12465/20526 cut-off events. For 8223/8284 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 153928 event pairs, 9216 based on Foata normal form. 8/19571 useless extension candidates. Maximal degree in co-relation 46872. Up to 17205 conditions per place. [2023-11-29 03:05:34,674 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 42 selfloop transitions, 51 changer transitions 0/107 dead transitions. [2023-11-29 03:05:34,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 755 flow [2023-11-29 03:05:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:05:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 03:05:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 521 transitions. [2023-11-29 03:05:34,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3391927083333333 [2023-11-29 03:05:34,678 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 521 transitions. [2023-11-29 03:05:34,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 521 transitions. [2023-11-29 03:05:34,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:34,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 521 transitions. [2023-11-29 03:05:34,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 21.708333333333332) internal successors, (521), 24 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:34,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 64.0) internal successors, (1600), 25 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:34,683 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 64.0) internal successors, (1600), 25 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:34,683 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 518 flow. Second operand 24 states and 521 transitions. [2023-11-29 03:05:34,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 755 flow [2023-11-29 03:05:34,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 742 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 03:05:34,716 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 682 flow [2023-11-29 03:05:34,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=682, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2023-11-29 03:05:34,717 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 51 predicate places. [2023-11-29 03:05:34,717 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 682 flow [2023-11-29 03:05:34,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:34,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:34,717 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:34,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:05:34,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:34,918 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:34,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:34,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1865957063, now seen corresponding path program 1 times [2023-11-29 03:05:34,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:34,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772663828] [2023-11-29 03:05:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:34,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:05:35,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:35,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772663828] [2023-11-29 03:05:35,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772663828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:35,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:35,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:35,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011370685] [2023-11-29 03:05:35,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:35,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:05:35,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:35,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:05:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:35,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2023-11-29 03:05:35,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 682 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:35,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:35,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2023-11-29 03:05:35,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:36,429 INFO L124 PetriNetUnfolderBase]: 11047/17414 cut-off events. [2023-11-29 03:05:36,429 INFO L125 PetriNetUnfolderBase]: For 6793/7341 co-relation queries the response was YES. [2023-11-29 03:05:36,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40488 conditions, 17414 events. 11047/17414 cut-off events. For 6793/7341 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 119326 event pairs, 5256 based on Foata normal form. 68/16664 useless extension candidates. Maximal degree in co-relation 40251. Up to 8181 conditions per place. [2023-11-29 03:05:36,514 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 143 selfloop transitions, 12 changer transitions 3/174 dead transitions. [2023-11-29 03:05:36,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 174 transitions, 1282 flow [2023-11-29 03:05:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:05:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:05:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2023-11-29 03:05:36,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2023-11-29 03:05:36,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 239 transitions. [2023-11-29 03:05:36,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 239 transitions. [2023-11-29 03:05:36,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:36,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 239 transitions. [2023-11-29 03:05:36,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:36,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:36,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:36,519 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 682 flow. Second operand 6 states and 239 transitions. [2023-11-29 03:05:36,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 174 transitions, 1282 flow [2023-11-29 03:05:36,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 174 transitions, 1124 flow, removed 17 selfloop flow, removed 11 redundant places. [2023-11-29 03:05:36,530 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 576 flow [2023-11-29 03:05:36,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=576, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2023-11-29 03:05:36,531 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 46 predicate places. [2023-11-29 03:05:36,531 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 576 flow [2023-11-29 03:05:36,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:36,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:36,531 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:36,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:05:36,531 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:36,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash 536509936, now seen corresponding path program 1 times [2023-11-29 03:05:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:36,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347270040] [2023-11-29 03:05:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:36,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:05:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:36,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347270040] [2023-11-29 03:05:36,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347270040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:36,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:36,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:05:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107956892] [2023-11-29 03:05:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:36,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:36,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:36,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:36,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:36,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2023-11-29 03:05:36,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 576 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:36,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:36,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2023-11-29 03:05:36,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:37,975 INFO L124 PetriNetUnfolderBase]: 9072/14940 cut-off events. [2023-11-29 03:05:37,975 INFO L125 PetriNetUnfolderBase]: For 6944/6961 co-relation queries the response was YES. [2023-11-29 03:05:38,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35061 conditions, 14940 events. 9072/14940 cut-off events. For 6944/6961 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 106009 event pairs, 6675 based on Foata normal form. 0/14343 useless extension candidates. Maximal degree in co-relation 34844. Up to 11347 conditions per place. [2023-11-29 03:05:38,043 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 142 selfloop transitions, 3 changer transitions 6/167 dead transitions. [2023-11-29 03:05:38,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 167 transitions, 1219 flow [2023-11-29 03:05:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2023-11-29 03:05:38,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2023-11-29 03:05:38,045 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 164 transitions. [2023-11-29 03:05:38,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 164 transitions. [2023-11-29 03:05:38,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:38,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 164 transitions. [2023-11-29 03:05:38,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:38,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:38,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:38,046 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 576 flow. Second operand 4 states and 164 transitions. [2023-11-29 03:05:38,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 167 transitions, 1219 flow [2023-11-29 03:05:38,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 167 transitions, 1191 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:05:38,060 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 563 flow [2023-11-29 03:05:38,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=563, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2023-11-29 03:05:38,061 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 46 predicate places. [2023-11-29 03:05:38,061 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 563 flow [2023-11-29 03:05:38,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:38,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:38,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:38,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:05:38,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:38,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:38,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1040820923, now seen corresponding path program 1 times [2023-11-29 03:05:38,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:38,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286442928] [2023-11-29 03:05:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:38,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:05:38,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:38,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286442928] [2023-11-29 03:05:38,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286442928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:38,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:38,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:38,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88590002] [2023-11-29 03:05:38,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:05:38,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:05:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:38,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2023-11-29 03:05:38,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 563 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:38,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:38,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2023-11-29 03:05:38,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:39,981 INFO L124 PetriNetUnfolderBase]: 11824/19049 cut-off events. [2023-11-29 03:05:39,981 INFO L125 PetriNetUnfolderBase]: For 8355/8728 co-relation queries the response was YES. [2023-11-29 03:05:40,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45018 conditions, 19049 events. 11824/19049 cut-off events. For 8355/8728 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 135234 event pairs, 5746 based on Foata normal form. 283/19256 useless extension candidates. Maximal degree in co-relation 44800. Up to 6591 conditions per place. [2023-11-29 03:05:40,065 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 134 selfloop transitions, 12 changer transitions 0/162 dead transitions. [2023-11-29 03:05:40,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 162 transitions, 1029 flow [2023-11-29 03:05:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:05:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:05:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2023-11-29 03:05:40,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.659375 [2023-11-29 03:05:40,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 211 transitions. [2023-11-29 03:05:40,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 211 transitions. [2023-11-29 03:05:40,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:40,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 211 transitions. [2023-11-29 03:05:40,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:40,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:40,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:40,069 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 563 flow. Second operand 5 states and 211 transitions. [2023-11-29 03:05:40,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 162 transitions, 1029 flow [2023-11-29 03:05:40,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 162 transitions, 1024 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:05:40,082 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 586 flow [2023-11-29 03:05:40,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2023-11-29 03:05:40,083 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 49 predicate places. [2023-11-29 03:05:40,083 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 586 flow [2023-11-29 03:05:40,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:40,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:40,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:40,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:05:40,084 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:40,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2111686670, now seen corresponding path program 1 times [2023-11-29 03:05:40,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:40,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355045631] [2023-11-29 03:05:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:05:40,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355045631] [2023-11-29 03:05:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355045631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:05:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210237910] [2023-11-29 03:05:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:40,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:40,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:40,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:05:40,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:05:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:40,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:05:40,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:05:40,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:05:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:05:40,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210237910] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:05:40,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:05:40,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2023-11-29 03:05:40,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983441573] [2023-11-29 03:05:40,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:05:40,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:05:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:40,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:05:40,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:05:40,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2023-11-29 03:05:40,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 586 flow. Second operand has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:40,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:40,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2023-11-29 03:05:40,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:46,747 INFO L124 PetriNetUnfolderBase]: 37143/57719 cut-off events. [2023-11-29 03:05:46,747 INFO L125 PetriNetUnfolderBase]: For 32768/34678 co-relation queries the response was YES. [2023-11-29 03:05:47,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140212 conditions, 57719 events. 37143/57719 cut-off events. For 32768/34678 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 459797 event pairs, 15082 based on Foata normal form. 870/58272 useless extension candidates. Maximal degree in co-relation 139781. Up to 7985 conditions per place. [2023-11-29 03:05:47,223 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 470 selfloop transitions, 145 changer transitions 40/668 dead transitions. [2023-11-29 03:05:47,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 668 transitions, 4537 flow [2023-11-29 03:05:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 03:05:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-11-29 03:05:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1332 transitions. [2023-11-29 03:05:47,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2023-11-29 03:05:47,228 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 1332 transitions. [2023-11-29 03:05:47,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 1332 transitions. [2023-11-29 03:05:47,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:47,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 1332 transitions. [2023-11-29 03:05:47,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 24.666666666666668) internal successors, (1332), 54 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:47,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 64.0) internal successors, (3520), 55 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:47,237 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 64.0) internal successors, (3520), 55 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:47,237 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 586 flow. Second operand 54 states and 1332 transitions. [2023-11-29 03:05:47,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 668 transitions, 4537 flow [2023-11-29 03:05:47,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 668 transitions, 4482 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:05:47,311 INFO L231 Difference]: Finished difference. Result has 176 places, 238 transitions, 2051 flow [2023-11-29 03:05:47,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2051, PETRI_PLACES=176, PETRI_TRANSITIONS=238} [2023-11-29 03:05:47,312 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 116 predicate places. [2023-11-29 03:05:47,312 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 238 transitions, 2051 flow [2023-11-29 03:05:47,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:47,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:47,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:47,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:05:47,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:47,513 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:47,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:47,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1607456646, now seen corresponding path program 1 times [2023-11-29 03:05:47,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:47,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127629923] [2023-11-29 03:05:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:47,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:05:47,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:47,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127629923] [2023-11-29 03:05:47,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127629923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:47,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:47,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:47,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155944714] [2023-11-29 03:05:47,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:47,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:05:47,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:47,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:05:47,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:47,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2023-11-29 03:05:47,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 238 transitions, 2051 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:47,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:47,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2023-11-29 03:05:47,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:52,891 INFO L124 PetriNetUnfolderBase]: 30508/48067 cut-off events. [2023-11-29 03:05:52,891 INFO L125 PetriNetUnfolderBase]: For 48125/49401 co-relation queries the response was YES. [2023-11-29 03:05:53,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122694 conditions, 48067 events. 30508/48067 cut-off events. For 48125/49401 co-relation queries the response was YES. Maximal size of possible extension queue 1568. Compared 377354 event pairs, 13394 based on Foata normal form. 276/48217 useless extension candidates. Maximal degree in co-relation 122197. Up to 21116 conditions per place. [2023-11-29 03:05:53,287 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 238 selfloop transitions, 26 changer transitions 17/297 dead transitions. [2023-11-29 03:05:53,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 297 transitions, 2871 flow [2023-11-29 03:05:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:05:53,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:05:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2023-11-29 03:05:53,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2023-11-29 03:05:53,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 205 transitions. [2023-11-29 03:05:53,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 205 transitions. [2023-11-29 03:05:53,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:53,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 205 transitions. [2023-11-29 03:05:53,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:53,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:53,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:53,291 INFO L175 Difference]: Start difference. First operand has 176 places, 238 transitions, 2051 flow. Second operand 5 states and 205 transitions. [2023-11-29 03:05:53,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 297 transitions, 2871 flow [2023-11-29 03:05:53,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 297 transitions, 2825 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-29 03:05:53,408 INFO L231 Difference]: Finished difference. Result has 175 places, 234 transitions, 2010 flow [2023-11-29 03:05:53,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2010, PETRI_PLACES=175, PETRI_TRANSITIONS=234} [2023-11-29 03:05:53,409 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 115 predicate places. [2023-11-29 03:05:53,410 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 234 transitions, 2010 flow [2023-11-29 03:05:53,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:53,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:53,410 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-29 03:05:53,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:05:53,410 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:05:53,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1328621246, now seen corresponding path program 1 times [2023-11-29 03:05:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:53,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820009911] [2023-11-29 03:05:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:53,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:53,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:53,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820009911] [2023-11-29 03:05:53,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820009911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:05:53,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497374935] [2023-11-29 03:05:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:53,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:53,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:05:53,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:05:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:53,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:05:53,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:53,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:05:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497374935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:05:53,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:05:53,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-11-29 03:05:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496659752] [2023-11-29 03:05:53,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:05:53,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:05:53,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:53,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:05:53,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:05:54,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-29 03:05:54,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 234 transitions, 2010 flow. Second operand has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:54,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:54,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-29 03:05:54,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:59,656 INFO L124 PetriNetUnfolderBase]: 29489/48144 cut-off events. [2023-11-29 03:05:59,656 INFO L125 PetriNetUnfolderBase]: For 54671/54859 co-relation queries the response was YES. [2023-11-29 03:05:59,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125060 conditions, 48144 events. 29489/48144 cut-off events. For 54671/54859 co-relation queries the response was YES. Maximal size of possible extension queue 1656. Compared 400829 event pairs, 22226 based on Foata normal form. 84/47991 useless extension candidates. Maximal degree in co-relation 122951. Up to 40837 conditions per place. [2023-11-29 03:06:00,049 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 71 selfloop transitions, 345 changer transitions 0/430 dead transitions. [2023-11-29 03:06:00,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 430 transitions, 5005 flow [2023-11-29 03:06:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 03:06:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 03:06:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 630 transitions. [2023-11-29 03:06:00,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786057692307692 [2023-11-29 03:06:00,051 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 630 transitions. [2023-11-29 03:06:00,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 630 transitions. [2023-11-29 03:06:00,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:00,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 630 transitions. [2023-11-29 03:06:00,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 24.23076923076923) internal successors, (630), 26 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:00,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 64.0) internal successors, (1728), 27 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:00,054 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 64.0) internal successors, (1728), 27 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:00,054 INFO L175 Difference]: Start difference. First operand has 175 places, 234 transitions, 2010 flow. Second operand 26 states and 630 transitions. [2023-11-29 03:06:00,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 430 transitions, 5005 flow [2023-11-29 03:06:00,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 430 transitions, 4926 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:06:00,259 INFO L231 Difference]: Finished difference. Result has 204 places, 430 transitions, 5030 flow [2023-11-29 03:06:00,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1959, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5030, PETRI_PLACES=204, PETRI_TRANSITIONS=430} [2023-11-29 03:06:00,260 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 144 predicate places. [2023-11-29 03:06:00,260 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 430 transitions, 5030 flow [2023-11-29 03:06:00,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:00,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:00,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:00,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:06:00,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:00,462 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:06:00,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1286141876, now seen corresponding path program 1 times [2023-11-29 03:06:00,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:00,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552503172] [2023-11-29 03:06:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:06:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552503172] [2023-11-29 03:06:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552503172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792381488] [2023-11-29 03:06:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:00,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:00,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:06:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:00,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:06:00,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:00,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:01,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792381488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:01,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:01,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2023-11-29 03:06:01,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452901097] [2023-11-29 03:06:01,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:01,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:06:01,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:06:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:06:01,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2023-11-29 03:06:01,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 430 transitions, 5030 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:01,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:01,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2023-11-29 03:06:01,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:07,505 INFO L124 PetriNetUnfolderBase]: 27568/42479 cut-off events. [2023-11-29 03:06:07,505 INFO L125 PetriNetUnfolderBase]: For 50378/51376 co-relation queries the response was YES. [2023-11-29 03:06:07,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112071 conditions, 42479 events. 27568/42479 cut-off events. For 50378/51376 co-relation queries the response was YES. Maximal size of possible extension queue 1383. Compared 321084 event pairs, 9534 based on Foata normal form. 968/42889 useless extension candidates. Maximal degree in co-relation 111351. Up to 9267 conditions per place. [2023-11-29 03:06:07,878 INFO L140 encePairwiseOnDemand]: 50/64 looper letters, 406 selfloop transitions, 194 changer transitions 13/625 dead transitions. [2023-11-29 03:06:07,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 625 transitions, 7176 flow [2023-11-29 03:06:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:06:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:06:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 479 transitions. [2023-11-29 03:06:07,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025735294117646 [2023-11-29 03:06:07,880 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 479 transitions. [2023-11-29 03:06:07,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 479 transitions. [2023-11-29 03:06:07,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:07,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 479 transitions. [2023-11-29 03:06:07,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 28.176470588235293) internal successors, (479), 17 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:07,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:07,882 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:07,882 INFO L175 Difference]: Start difference. First operand has 204 places, 430 transitions, 5030 flow. Second operand 17 states and 479 transitions. [2023-11-29 03:06:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 625 transitions, 7176 flow [2023-11-29 03:06:08,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 625 transitions, 5863 flow, removed 466 selfloop flow, removed 12 redundant places. [2023-11-29 03:06:08,135 INFO L231 Difference]: Finished difference. Result has 208 places, 430 transitions, 4183 flow [2023-11-29 03:06:08,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=3791, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4183, PETRI_PLACES=208, PETRI_TRANSITIONS=430} [2023-11-29 03:06:08,136 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 148 predicate places. [2023-11-29 03:06:08,136 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 430 transitions, 4183 flow [2023-11-29 03:06:08,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:08,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:08,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:08,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:06:08,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:08,337 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:06:08,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:08,338 INFO L85 PathProgramCache]: Analyzing trace with hash 736412995, now seen corresponding path program 1 times [2023-11-29 03:06:08,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:08,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338104556] [2023-11-29 03:06:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:08,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:06:08,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338104556] [2023-11-29 03:06:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338104556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315751952] [2023-11-29 03:06:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:08,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:08,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:08,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:08,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:06:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:08,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:06:08,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:08,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:08,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315751952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:08,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:08,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2023-11-29 03:06:08,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351844108] [2023-11-29 03:06:08,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:08,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:06:08,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:06:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:06:08,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2023-11-29 03:06:08,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 430 transitions, 4183 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:08,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:08,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2023-11-29 03:06:08,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:14,178 INFO L124 PetriNetUnfolderBase]: 24629/37852 cut-off events. [2023-11-29 03:06:14,178 INFO L125 PetriNetUnfolderBase]: For 56175/56561 co-relation queries the response was YES. [2023-11-29 03:06:14,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103568 conditions, 37852 events. 24629/37852 cut-off events. For 56175/56561 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 279553 event pairs, 9476 based on Foata normal form. 844/38163 useless extension candidates. Maximal degree in co-relation 102937. Up to 8407 conditions per place. [2023-11-29 03:06:14,484 INFO L140 encePairwiseOnDemand]: 50/64 looper letters, 462 selfloop transitions, 163 changer transitions 36/672 dead transitions. [2023-11-29 03:06:14,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 672 transitions, 6929 flow [2023-11-29 03:06:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:06:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:06:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 489 transitions. [2023-11-29 03:06:14,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494485294117647 [2023-11-29 03:06:14,486 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 489 transitions. [2023-11-29 03:06:14,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 489 transitions. [2023-11-29 03:06:14,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:14,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 489 transitions. [2023-11-29 03:06:14,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 28.764705882352942) internal successors, (489), 17 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,488 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,488 INFO L175 Difference]: Start difference. First operand has 208 places, 430 transitions, 4183 flow. Second operand 17 states and 489 transitions. [2023-11-29 03:06:14,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 672 transitions, 6929 flow [2023-11-29 03:06:14,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 672 transitions, 6798 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-29 03:06:14,656 INFO L231 Difference]: Finished difference. Result has 215 places, 428 transitions, 4431 flow [2023-11-29 03:06:14,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=4118, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4431, PETRI_PLACES=215, PETRI_TRANSITIONS=428} [2023-11-29 03:06:14,656 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 155 predicate places. [2023-11-29 03:06:14,656 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 428 transitions, 4431 flow [2023-11-29 03:06:14,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:14,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:14,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:06:14,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:06:14,857 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:06:14,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1073050442, now seen corresponding path program 1 times [2023-11-29 03:06:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522993524] [2023-11-29 03:06:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:06:14,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:14,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522993524] [2023-11-29 03:06:14,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522993524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:14,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360533697] [2023-11-29 03:06:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:14,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:14,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:14,952 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:15,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:06:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:15,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:06:15,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:06:15,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:06:15,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360533697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:15,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:15,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2023-11-29 03:06:15,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340322666] [2023-11-29 03:06:15,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:15,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:06:15,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:06:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:06:15,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2023-11-29 03:06:15,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 428 transitions, 4431 flow. Second operand has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:15,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:15,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2023-11-29 03:06:15,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:24,843 INFO L124 PetriNetUnfolderBase]: 45869/69676 cut-off events. [2023-11-29 03:06:24,843 INFO L125 PetriNetUnfolderBase]: For 115042/115833 co-relation queries the response was YES. [2023-11-29 03:06:25,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193855 conditions, 69676 events. 45869/69676 cut-off events. For 115042/115833 co-relation queries the response was YES. Maximal size of possible extension queue 1974. Compared 538928 event pairs, 14528 based on Foata normal form. 932/70398 useless extension candidates. Maximal degree in co-relation 193204. Up to 13567 conditions per place. [2023-11-29 03:06:25,635 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 287 selfloop transitions, 348 changer transitions 22/668 dead transitions. [2023-11-29 03:06:25,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 668 transitions, 6875 flow [2023-11-29 03:06:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:06:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:06:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 443 transitions. [2023-11-29 03:06:25,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49441964285714285 [2023-11-29 03:06:25,636 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 443 transitions. [2023-11-29 03:06:25,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 443 transitions. [2023-11-29 03:06:25,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:25,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 443 transitions. [2023-11-29 03:06:25,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 64.0) internal successors, (960), 15 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,639 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 64.0) internal successors, (960), 15 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,639 INFO L175 Difference]: Start difference. First operand has 215 places, 428 transitions, 4431 flow. Second operand 14 states and 443 transitions. [2023-11-29 03:06:25,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 668 transitions, 6875 flow [2023-11-29 03:06:26,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 668 transitions, 6589 flow, removed 17 selfloop flow, removed 13 redundant places. [2023-11-29 03:06:26,060 INFO L231 Difference]: Finished difference. Result has 216 places, 433 transitions, 4963 flow [2023-11-29 03:06:26,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4963, PETRI_PLACES=216, PETRI_TRANSITIONS=433} [2023-11-29 03:06:26,060 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 156 predicate places. [2023-11-29 03:06:26,060 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 433 transitions, 4963 flow [2023-11-29 03:06:26,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:26,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:26,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:26,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:06:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:26,261 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:06:26,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash -512590851, now seen corresponding path program 2 times [2023-11-29 03:06:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:26,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795505616] [2023-11-29 03:06:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:06:26,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:26,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795505616] [2023-11-29 03:06:26,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795505616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:26,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280170285] [2023-11-29 03:06:26,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:06:26,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:26,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:26,345 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:26,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:06:26,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:06:26,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:06:26,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:06:26,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 03:06:26,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 03:06:26,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280170285] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:26,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:26,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-11-29 03:06:26,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650948256] [2023-11-29 03:06:26,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:26,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:06:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:26,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:06:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:06:26,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2023-11-29 03:06:26,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 433 transitions, 4963 flow. Second operand has 9 states, 9 states have (on average 25.333333333333332) internal successors, (228), 9 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:26,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:26,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2023-11-29 03:06:26,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:37,902 INFO L124 PetriNetUnfolderBase]: 58819/87739 cut-off events. [2023-11-29 03:06:37,902 INFO L125 PetriNetUnfolderBase]: For 152967/155189 co-relation queries the response was YES. [2023-11-29 03:06:38,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250007 conditions, 87739 events. 58819/87739 cut-off events. For 152967/155189 co-relation queries the response was YES. Maximal size of possible extension queue 2061. Compared 662928 event pairs, 18278 based on Foata normal form. 0/87318 useless extension candidates. Maximal degree in co-relation 249323. Up to 33661 conditions per place. [2023-11-29 03:06:38,752 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 593 selfloop transitions, 12 changer transitions 1/619 dead transitions. [2023-11-29 03:06:38,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 619 transitions, 7085 flow [2023-11-29 03:06:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:06:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 03:06:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 367 transitions. [2023-11-29 03:06:38,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371527777777778 [2023-11-29 03:06:38,753 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 367 transitions. [2023-11-29 03:06:38,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 367 transitions. [2023-11-29 03:06:38,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:38,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 367 transitions. [2023-11-29 03:06:38,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.77777777777778) internal successors, (367), 9 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:38,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:38,755 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:38,755 INFO L175 Difference]: Start difference. First operand has 216 places, 433 transitions, 4963 flow. Second operand 9 states and 367 transitions. [2023-11-29 03:06:38,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 619 transitions, 7085 flow [2023-11-29 03:06:39,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 619 transitions, 6950 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-29 03:06:39,448 INFO L231 Difference]: Finished difference. Result has 220 places, 434 transitions, 4868 flow [2023-11-29 03:06:39,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=4842, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4868, PETRI_PLACES=220, PETRI_TRANSITIONS=434} [2023-11-29 03:06:39,449 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 160 predicate places. [2023-11-29 03:06:39,449 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 434 transitions, 4868 flow [2023-11-29 03:06:39,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.333333333333332) internal successors, (228), 9 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:39,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:39,449 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:39,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 03:06:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:39,650 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:06:39,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1379354584, now seen corresponding path program 1 times [2023-11-29 03:06:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:39,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357749350] [2023-11-29 03:06:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:06:39,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:39,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357749350] [2023-11-29 03:06:39,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357749350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:39,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486951935] [2023-11-29 03:06:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:39,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:39,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:39,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:39,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:06:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:39,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:06:39,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:06:39,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:06:40,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486951935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:40,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:40,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2023-11-29 03:06:40,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209046441] [2023-11-29 03:06:40,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:40,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:06:40,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:40,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:06:40,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:06:40,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2023-11-29 03:06:40,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 434 transitions, 4868 flow. Second operand has 19 states, 19 states have (on average 18.68421052631579) internal successors, (355), 19 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:40,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:40,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2023-11-29 03:06:40,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:54,119 INFO L124 PetriNetUnfolderBase]: 68095/101392 cut-off events. [2023-11-29 03:06:54,119 INFO L125 PetriNetUnfolderBase]: For 216951/218727 co-relation queries the response was YES. [2023-11-29 03:06:54,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297620 conditions, 101392 events. 68095/101392 cut-off events. For 216951/218727 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 764836 event pairs, 20572 based on Foata normal form. 1440/102627 useless extension candidates. Maximal degree in co-relation 296930. Up to 24438 conditions per place. [2023-11-29 03:06:55,133 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 211 selfloop transitions, 341 changer transitions 101/663 dead transitions. [2023-11-29 03:06:55,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 663 transitions, 7505 flow [2023-11-29 03:06:55,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:06:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 03:06:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 400 transitions. [2023-11-29 03:06:55,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2023-11-29 03:06:55,135 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 400 transitions. [2023-11-29 03:06:55,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 400 transitions. [2023-11-29 03:06:55,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:55,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 400 transitions. [2023-11-29 03:06:55,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 30.76923076923077) internal successors, (400), 13 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:55,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 64.0) internal successors, (896), 14 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:55,138 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 64.0) internal successors, (896), 14 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:55,138 INFO L175 Difference]: Start difference. First operand has 220 places, 434 transitions, 4868 flow. Second operand 13 states and 400 transitions. [2023-11-29 03:06:55,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 663 transitions, 7505 flow [2023-11-29 03:06:55,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 663 transitions, 7170 flow, removed 76 selfloop flow, removed 12 redundant places. [2023-11-29 03:06:55,956 INFO L231 Difference]: Finished difference. Result has 220 places, 430 transitions, 5422 flow [2023-11-29 03:06:55,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=4779, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5422, PETRI_PLACES=220, PETRI_TRANSITIONS=430} [2023-11-29 03:06:55,956 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 160 predicate places. [2023-11-29 03:06:55,956 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 430 transitions, 5422 flow [2023-11-29 03:06:55,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.68421052631579) internal successors, (355), 19 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:55,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:55,957 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:55,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:06:56,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:06:56,157 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:06:56,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash 410433336, now seen corresponding path program 2 times [2023-11-29 03:06:56,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:56,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179145105] [2023-11-29 03:06:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:56,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:06:56,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179145105] [2023-11-29 03:06:56,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179145105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866243986] [2023-11-29 03:06:56,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:06:56,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:56,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:56,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:56,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:06:56,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:06:56,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:06:56,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:06:56,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:06:56,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:06:56,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866243986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:56,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:56,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 3] total 15 [2023-11-29 03:06:56,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877998009] [2023-11-29 03:06:56,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:56,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:06:56,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:06:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:06:56,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2023-11-29 03:06:56,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 430 transitions, 5422 flow. Second operand has 16 states, 16 states have (on average 18.4375) internal successors, (295), 16 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:56,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:56,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2023-11-29 03:06:56,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:16,179 INFO L124 PetriNetUnfolderBase]: 99212/147215 cut-off events. [2023-11-29 03:07:16,179 INFO L125 PetriNetUnfolderBase]: For 288005/290469 co-relation queries the response was YES. [2023-11-29 03:07:17,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427627 conditions, 147215 events. 99212/147215 cut-off events. For 288005/290469 co-relation queries the response was YES. Maximal size of possible extension queue 2950. Compared 1153408 event pairs, 23886 based on Foata normal form. 1804/148811 useless extension candidates. Maximal degree in co-relation 426890. Up to 25839 conditions per place. [2023-11-29 03:07:17,574 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 573 selfloop transitions, 90 changer transitions 70/743 dead transitions. [2023-11-29 03:07:17,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 743 transitions, 8459 flow [2023-11-29 03:07:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:07:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:07:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 508 transitions. [2023-11-29 03:07:17,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46691176470588236 [2023-11-29 03:07:17,576 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 508 transitions. [2023-11-29 03:07:17,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 508 transitions. [2023-11-29 03:07:17,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:17,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 508 transitions. [2023-11-29 03:07:17,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 29.88235294117647) internal successors, (508), 17 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:17,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:17,579 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:17,579 INFO L175 Difference]: Start difference. First operand has 220 places, 430 transitions, 5422 flow. Second operand 17 states and 508 transitions. [2023-11-29 03:07:17,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 743 transitions, 8459 flow [2023-11-29 03:07:21,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 743 transitions, 7980 flow, removed 25 selfloop flow, removed 15 redundant places. [2023-11-29 03:07:21,486 INFO L231 Difference]: Finished difference. Result has 216 places, 429 transitions, 5232 flow [2023-11-29 03:07:21,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=5032, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5232, PETRI_PLACES=216, PETRI_TRANSITIONS=429} [2023-11-29 03:07:21,487 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 156 predicate places. [2023-11-29 03:07:21,487 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 429 transitions, 5232 flow [2023-11-29 03:07:21,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.4375) internal successors, (295), 16 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:21,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:21,488 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:21,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:07:21,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:21,688 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:07:21,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash 264686998, now seen corresponding path program 2 times [2023-11-29 03:07:21,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:21,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564229860] [2023-11-29 03:07:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:21,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:07:21,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:21,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564229860] [2023-11-29 03:07:21,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564229860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:21,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753141903] [2023-11-29 03:07:21,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:07:21,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:21,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:21,937 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:21,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:07:22,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:07:22,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:07:22,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:07:22,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:07:22,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:07:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753141903] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:22,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:22,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 3] total 15 [2023-11-29 03:07:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328026877] [2023-11-29 03:07:22,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:22,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:07:22,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:07:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:07:22,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2023-11-29 03:07:22,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 429 transitions, 5232 flow. Second operand has 16 states, 16 states have (on average 18.6875) internal successors, (299), 16 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:22,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:22,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2023-11-29 03:07:22,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:31,324 INFO L124 PetriNetUnfolderBase]: 44120/70009 cut-off events. [2023-11-29 03:07:31,324 INFO L125 PetriNetUnfolderBase]: For 163397/163397 co-relation queries the response was YES. [2023-11-29 03:07:31,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215986 conditions, 70009 events. 44120/70009 cut-off events. For 163397/163397 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 551662 event pairs, 12528 based on Foata normal form. 1860/71751 useless extension candidates. Maximal degree in co-relation 215281. Up to 13054 conditions per place. [2023-11-29 03:07:31,815 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 285 selfloop transitions, 74 changer transitions 336/698 dead transitions. [2023-11-29 03:07:31,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 698 transitions, 8012 flow [2023-11-29 03:07:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:07:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:07:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 485 transitions. [2023-11-29 03:07:31,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44577205882352944 [2023-11-29 03:07:31,818 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 485 transitions. [2023-11-29 03:07:31,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 485 transitions. [2023-11-29 03:07:31,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:31,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 485 transitions. [2023-11-29 03:07:31,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 28.529411764705884) internal successors, (485), 17 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:31,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:31,820 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:31,820 INFO L175 Difference]: Start difference. First operand has 216 places, 429 transitions, 5232 flow. Second operand 17 states and 485 transitions. [2023-11-29 03:07:31,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 698 transitions, 8012 flow [2023-11-29 03:07:34,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 698 transitions, 7864 flow, removed 20 selfloop flow, removed 8 redundant places. [2023-11-29 03:07:34,305 INFO L231 Difference]: Finished difference. Result has 217 places, 362 transitions, 4946 flow [2023-11-29 03:07:34,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=5136, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4946, PETRI_PLACES=217, PETRI_TRANSITIONS=362} [2023-11-29 03:07:34,306 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 157 predicate places. [2023-11-29 03:07:34,306 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 362 transitions, 4946 flow [2023-11-29 03:07:34,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.6875) internal successors, (299), 16 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:34,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:34,306 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2023-11-29 03:07:34,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:07:34,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:07:34,507 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:07:34,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1005125027, now seen corresponding path program 2 times [2023-11-29 03:07:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528932129] [2023-11-29 03:07:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:34,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:35,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528932129] [2023-11-29 03:07:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528932129] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403169322] [2023-11-29 03:07:35,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:07:35,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:35,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:35,018 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:35,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:07:35,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:07:35,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:07:35,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:07:35,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 03:07:35,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 03:07:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403169322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:35,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2023-11-29 03:07:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034432671] [2023-11-29 03:07:35,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:35,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:07:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:35,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:07:35,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:07:35,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-29 03:07:35,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 362 transitions, 4946 flow. Second operand has 31 states, 31 states have (on average 19.096774193548388) internal successors, (592), 31 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:35,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:35,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-29 03:07:35,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:36,472 INFO L124 PetriNetUnfolderBase]: 57/612 cut-off events. [2023-11-29 03:07:36,472 INFO L125 PetriNetUnfolderBase]: For 5142/5142 co-relation queries the response was YES. [2023-11-29 03:07:36,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 612 events. 57/612 cut-off events. For 5142/5142 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3420 event pairs, 0 based on Foata normal form. 15/627 useless extension candidates. Maximal degree in co-relation 3556. Up to 182 conditions per place. [2023-11-29 03:07:36,476 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 20 selfloop transitions, 365 changer transitions 0/388 dead transitions. [2023-11-29 03:07:36,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 388 transitions, 6081 flow [2023-11-29 03:07:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 03:07:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-29 03:07:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1143 transitions. [2023-11-29 03:07:36,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31332236842105265 [2023-11-29 03:07:36,479 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 1143 transitions. [2023-11-29 03:07:36,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 1143 transitions. [2023-11-29 03:07:36,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:36,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 1143 transitions. [2023-11-29 03:07:36,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 20.05263157894737) internal successors, (1143), 57 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:36,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 64.0) internal successors, (3712), 58 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:36,486 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 64.0) internal successors, (3712), 58 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:36,486 INFO L175 Difference]: Start difference. First operand has 217 places, 362 transitions, 4946 flow. Second operand 57 states and 1143 transitions. [2023-11-29 03:07:36,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 388 transitions, 6081 flow [2023-11-29 03:07:36,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 388 transitions, 5401 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-29 03:07:36,517 INFO L231 Difference]: Finished difference. Result has 192 places, 388 transitions, 5435 flow [2023-11-29 03:07:36,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5435, PETRI_PLACES=192, PETRI_TRANSITIONS=388} [2023-11-29 03:07:36,518 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 132 predicate places. [2023-11-29 03:07:36,518 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 388 transitions, 5435 flow [2023-11-29 03:07:36,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 19.096774193548388) internal successors, (592), 31 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:36,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:36,518 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1] [2023-11-29 03:07:36,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:07:36,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:07:36,719 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:07:36,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:36,719 INFO L85 PathProgramCache]: Analyzing trace with hash 293016202, now seen corresponding path program 1 times [2023-11-29 03:07:36,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:36,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152103960] [2023-11-29 03:07:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:37,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:37,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152103960] [2023-11-29 03:07:37,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152103960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:37,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139385726] [2023-11-29 03:07:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:37,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:37,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:37,374 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:37,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:07:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:37,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 03:07:37,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:37,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:38,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139385726] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:38,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:38,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 59 [2023-11-29 03:07:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570939646] [2023-11-29 03:07:38,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:38,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-29 03:07:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:38,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-29 03:07:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 03:07:38,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-29 03:07:38,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 388 transitions, 5435 flow. Second operand has 60 states, 60 states have (on average 19.05) internal successors, (1143), 60 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:38,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:38,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-29 03:07:38,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:39,786 INFO L124 PetriNetUnfolderBase]: 117/1257 cut-off events. [2023-11-29 03:07:39,786 INFO L125 PetriNetUnfolderBase]: For 23777/23777 co-relation queries the response was YES. [2023-11-29 03:07:39,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 1257 events. 117/1257 cut-off events. For 23777/23777 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 7284 event pairs, 0 based on Foata normal form. 135/1392 useless extension candidates. Maximal degree in co-relation 7577. Up to 456 conditions per place. [2023-11-29 03:07:39,792 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 29 selfloop transitions, 761 changer transitions 0/793 dead transitions. [2023-11-29 03:07:39,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 793 transitions, 13060 flow [2023-11-29 03:07:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 03:07:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-29 03:07:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1293 transitions. [2023-11-29 03:07:39,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34832974137931033 [2023-11-29 03:07:39,795 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1293 transitions. [2023-11-29 03:07:39,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1293 transitions. [2023-11-29 03:07:39,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:39,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1293 transitions. [2023-11-29 03:07:39,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 22.29310344827586) internal successors, (1293), 58 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:39,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 64.0) internal successors, (3776), 59 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:39,801 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 64.0) internal successors, (3776), 59 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:39,801 INFO L175 Difference]: Start difference. First operand has 192 places, 388 transitions, 5435 flow. Second operand 58 states and 1293 transitions. [2023-11-29 03:07:39,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 793 transitions, 13060 flow [2023-11-29 03:07:39,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 793 transitions, 12105 flow, removed 206 selfloop flow, removed 22 redundant places. [2023-11-29 03:07:39,859 INFO L231 Difference]: Finished difference. Result has 242 places, 793 transitions, 12485 flow [2023-11-29 03:07:39,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=12485, PETRI_PLACES=242, PETRI_TRANSITIONS=793} [2023-11-29 03:07:39,859 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 182 predicate places. [2023-11-29 03:07:39,860 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 793 transitions, 12485 flow [2023-11-29 03:07:39,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 19.05) internal successors, (1143), 60 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:39,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:39,860 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 29, 28, 1, 1, 1, 1] [2023-11-29 03:07:39,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:07:40,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:07:40,061 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 03:07:40,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:40,061 INFO L85 PathProgramCache]: Analyzing trace with hash -422189037, now seen corresponding path program 2 times [2023-11-29 03:07:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361062577] [2023-11-29 03:07:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:40,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:41,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:41,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361062577] [2023-11-29 03:07:41,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361062577] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449769478] [2023-11-29 03:07:41,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:07:41,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:41,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:41,911 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:41,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:07:42,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:07:42,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:07:42,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:07:42,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2023-11-29 03:07:42,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2023-11-29 03:07:42,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449769478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:42,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:42,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 3, 3] total 62 [2023-11-29 03:07:42,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279165561] [2023-11-29 03:07:42,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-29 03:07:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-29 03:07:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 03:07:42,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2023-11-29 03:07:42,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 793 transitions, 12485 flow. Second operand has 63 states, 63 states have (on average 19.07936507936508) internal successors, (1202), 63 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:42,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:42,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2023-11-29 03:07:42,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:46,441 INFO L124 PetriNetUnfolderBase]: 121/1291 cut-off events. [2023-11-29 03:07:46,441 INFO L125 PetriNetUnfolderBase]: For 19263/19263 co-relation queries the response was YES. [2023-11-29 03:07:46,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8212 conditions, 1291 events. 121/1291 cut-off events. For 19263/19263 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 7489 event pairs, 0 based on Foata normal form. 18/1309 useless extension candidates. Maximal degree in co-relation 8165. Up to 390 conditions per place. [2023-11-29 03:07:46,447 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 0 selfloop transitions, 0 changer transitions 819/819 dead transitions. [2023-11-29 03:07:46,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 819 transitions, 14493 flow [2023-11-29 03:07:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-11-29 03:07:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2023-11-29 03:07:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 2421 transitions. [2023-11-29 03:07:46,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.312629132231405 [2023-11-29 03:07:46,450 INFO L72 ComplementDD]: Start complementDD. Operand 121 states and 2421 transitions. [2023-11-29 03:07:46,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 2421 transitions. [2023-11-29 03:07:46,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:46,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 121 states and 2421 transitions. [2023-11-29 03:07:46,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 122 states, 121 states have (on average 20.00826446280992) internal successors, (2421), 121 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:46,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 122 states, 122 states have (on average 64.0) internal successors, (7808), 122 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:46,464 INFO L81 ComplementDD]: Finished complementDD. Result has 122 states, 122 states have (on average 64.0) internal successors, (7808), 122 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:46,464 INFO L175 Difference]: Start difference. First operand has 242 places, 793 transitions, 12485 flow. Second operand 121 states and 2421 transitions. [2023-11-29 03:07:46,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 819 transitions, 14493 flow [2023-11-29 03:07:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 819 transitions, 11161 flow, removed 918 selfloop flow, removed 56 redundant places. [2023-11-29 03:07:46,545 INFO L231 Difference]: Finished difference. Result has 305 places, 0 transitions, 0 flow [2023-11-29 03:07:46,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=9209, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=792, PETRI_DIFFERENCE_SUBTRAHEND_STATES=121, PETRI_FLOW=0, PETRI_PLACES=305, PETRI_TRANSITIONS=0} [2023-11-29 03:07:46,546 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 245 predicate places. [2023-11-29 03:07:46,546 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 0 transitions, 0 flow [2023-11-29 03:07:46,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 19.07936507936508) internal successors, (1202), 63 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:46,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-11-29 03:07:46,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-29 03:07:46,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-29 03:07:46,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-29 03:07:46,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-29 03:07:46,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-29 03:07:46,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-29 03:07:46,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-29 03:07:46,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-29 03:07:46,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-29 03:07:46,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-29 03:07:46,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-29 03:07:46,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:07:46,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:07:46,751 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:46,756 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 03:07:46,756 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:07:46,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:07:46 BasicIcfg [2023-11-29 03:07:46,760 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:07:46,760 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:07:46,760 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:07:46,761 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:07:46,761 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:05:22" (3/4) ... [2023-11-29 03:07:46,762 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:07:46,765 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 03:07:46,765 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 03:07:46,765 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 03:07:46,775 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 208 nodes and edges [2023-11-29 03:07:46,776 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2023-11-29 03:07:46,777 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-29 03:07:46,777 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 03:07:46,873 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:07:46,873 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:07:46,873 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:07:46,874 INFO L158 Benchmark]: Toolchain (without parser) took 145915.54ms. Allocated memory was 151.0MB in the beginning and 14.4GB in the end (delta: 14.2GB). Free memory was 115.3MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. [2023-11-29 03:07:46,875 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 115.3MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:07:46,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.43ms. Allocated memory is still 151.0MB. Free memory was 114.8MB in the beginning and 103.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 03:07:46,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.71ms. Allocated memory is still 151.0MB. Free memory was 103.0MB in the beginning and 100.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:07:46,876 INFO L158 Benchmark]: Boogie Preprocessor took 63.78ms. Allocated memory is still 151.0MB. Free memory was 100.6MB in the beginning and 97.3MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:07:46,876 INFO L158 Benchmark]: RCFGBuilder took 908.86ms. Allocated memory is still 151.0MB. Free memory was 97.3MB in the beginning and 115.1MB in the end (delta: -17.8MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2023-11-29 03:07:46,876 INFO L158 Benchmark]: TraceAbstraction took 144471.84ms. Allocated memory was 151.0MB in the beginning and 14.4GB in the end (delta: 14.2GB). Free memory was 114.9MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. [2023-11-29 03:07:46,876 INFO L158 Benchmark]: Witness Printer took 113.30ms. Allocated memory is still 14.4GB. Free memory was 11.0GB in the beginning and 11.0GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 03:07:46,878 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 115.3MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.43ms. Allocated memory is still 151.0MB. Free memory was 114.8MB in the beginning and 103.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.71ms. Allocated memory is still 151.0MB. Free memory was 103.0MB in the beginning and 100.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.78ms. Allocated memory is still 151.0MB. Free memory was 100.6MB in the beginning and 97.3MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 908.86ms. Allocated memory is still 151.0MB. Free memory was 97.3MB in the beginning and 115.1MB in the end (delta: -17.8MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * TraceAbstraction took 144471.84ms. Allocated memory was 151.0MB in the beginning and 14.4GB in the end (delta: 14.2GB). Free memory was 114.9MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. * Witness Printer took 113.30ms. Allocated memory is still 14.4GB. Free memory was 11.0GB in the beginning and 11.0GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: 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 - 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 - 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 7 procedures, 86 locations, 21 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: 144.4s, OverallIterations: 26, TraceHistogramMax: 29, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 130.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6435 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6293 mSDsluCounter, 3542 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3508 mSDsCounter, 1625 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13028 IncrementalHoareTripleChecker+Invalid, 14653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1625 mSolverCounterUnsat, 34 mSDtfsCounter, 13028 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1435 GetRequests, 705 SyntacticMatches, 14 SemanticMatches, 716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15496 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12485occurred in iteration=25, InterpolantAutomatonStates: 510, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 1013 NumberOfCodeBlocks, 825 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1385 ConstructedInterpolants, 0 QuantifiedInterpolants, 5051 SizeOfPredicates, 76 NumberOfNonLiveVariables, 2971 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 55 InterpolantComputations, 12 PerfectInterpolantSequences, 3015/5718 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 03:07:46,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db5c8a61-0176-413e-af28-db6b11690b01/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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