./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/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_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/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_cf3548a0-c73d-414f-92a9-dd5af7fac782/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 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:03:18,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:03:18,914 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:03:18,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:03:18,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:03:18,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:03:18,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:03:18,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:03:18,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:03:18,943 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:03:18,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:03:18,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:03:18,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:03:18,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:03:18,946 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:03:18,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:03:18,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:03:18,948 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:03:18,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:03:18,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:03:18,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:03:18,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:03:18,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:03:18,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:03:18,954 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:03:18,955 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:03:18,955 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:03:18,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:03:18,956 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:03:18,956 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:03:18,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:03:18,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:03:18,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:03:18,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:03:18,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:03:18,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:03:18,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:03:18,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:03:18,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:03:18,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:03:18,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:03:18,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:03:18,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:03:18,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:03:18,972 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_cf3548a0-c73d-414f-92a9-dd5af7fac782/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2023-11-29 03:03:19,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:03:19,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:03:19,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:03:19,229 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:03:19,229 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:03:19,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2023-11-29 03:03:21,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:03:22,179 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:03:22,179 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2023-11-29 03:03:22,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/data/46c8a59ab/54c156426bbb4804a170bac315e62c70/FLAG0022d55eb [2023-11-29 03:03:22,202 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/data/46c8a59ab/54c156426bbb4804a170bac315e62c70 [2023-11-29 03:03:22,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:03:22,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:03:22,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:03:22,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:03:22,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:03:22,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f431a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22, skipping insertion in model container [2023-11-29 03:03:22,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:03:22,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:03:22,430 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:03:22,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:03:22,475 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:03:22,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22 WrapperNode [2023-11-29 03:03:22,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:03:22,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:03:22,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:03:22,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:03:22,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,494 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,529 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 354 [2023-11-29 03:03:22,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:03:22,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:03:22,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:03:22,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:03:22,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,568 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 03:03:22,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:03:22,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:03:22,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:03:22,601 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:03:22,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (1/1) ... [2023-11-29 03:03:22,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:03:22,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:03:22,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:03:22,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:03:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:03:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:03:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:03:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:03:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:03:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:03:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:03:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:03:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:03:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:03:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:03:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:03:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:03:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:03:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:03:22,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:03:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:03:22,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:03:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:03:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:03:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:03:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:03:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:03:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:03:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:03:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:03:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:03:22,662 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 03:03:22,793 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:03:22,796 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:03:23,344 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:03:23,725 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:03:23,725 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 03:03:23,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:03:23 BoogieIcfgContainer [2023-11-29 03:03:23,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:03:23,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:03:23,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:03:23,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:03:23,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:03:22" (1/3) ... [2023-11-29 03:03:23,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31db92c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:03:23, skipping insertion in model container [2023-11-29 03:03:23,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:22" (2/3) ... [2023-11-29 03:03:23,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31db92c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:03:23, skipping insertion in model container [2023-11-29 03:03:23,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:03:23" (3/3) ... [2023-11-29 03:03:23,734 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-11-29 03:03:23,743 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:03:23,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:03:23,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-29 03:03:23,754 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:03:23,847 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 03:03:23,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 130 transitions, 281 flow [2023-11-29 03:03:23,933 INFO L124 PetriNetUnfolderBase]: 15/127 cut-off events. [2023-11-29 03:03:23,933 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 03:03:23,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 15/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 500 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-29 03:03:23,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 130 transitions, 281 flow [2023-11-29 03:03:23,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 125 transitions, 265 flow [2023-11-29 03:03:23,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:03:23,961 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;@64e24c5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:03:23,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-29 03:03:23,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:03:23,965 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 03:03:23,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:03:23,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:03:23,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 03:03:23,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:03:23,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:03:23,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1004457, now seen corresponding path program 1 times [2023-11-29 03:03:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:03:23,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982809936] [2023-11-29 03:03:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:23,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:03:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:24,246 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 03:03:24,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:03:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982809936] [2023-11-29 03:03:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982809936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:03:24,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:03:24,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:03:24,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581813765] [2023-11-29 03:03:24,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:03:24,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:03:24,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:03:24,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:03:24,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:03:24,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-29 03:03:24,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 125 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 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 03:03:24,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:03:24,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-29 03:03:24,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:03:26,745 INFO L124 PetriNetUnfolderBase]: 10283/20242 cut-off events. [2023-11-29 03:03:26,745 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2023-11-29 03:03:26,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34185 conditions, 20242 events. 10283/20242 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 188336 event pairs, 6869 based on Foata normal form. 3/15357 useless extension candidates. Maximal degree in co-relation 31930. Up to 13555 conditions per place. [2023-11-29 03:03:26,955 INFO L140 encePairwiseOnDemand]: 114/130 looper letters, 64 selfloop transitions, 10 changer transitions 0/134 dead transitions. [2023-11-29 03:03:26,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 134 transitions, 431 flow [2023-11-29 03:03:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:03:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:03:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-11-29 03:03:26,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2023-11-29 03:03:26,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-11-29 03:03:26,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-11-29 03:03:26,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:03:26,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-11-29 03:03:26,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 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 03:03:26,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 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 03:03:26,983 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 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 03:03:26,985 INFO L175 Difference]: Start difference. First operand has 120 places, 125 transitions, 265 flow. Second operand 4 states and 332 transitions. [2023-11-29 03:03:26,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 134 transitions, 431 flow [2023-11-29 03:03:26,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 134 transitions, 422 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:03:27,000 INFO L231 Difference]: Finished difference. Result has 121 places, 134 transitions, 344 flow [2023-11-29 03:03:27,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=121, PETRI_TRANSITIONS=134} [2023-11-29 03:03:27,005 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2023-11-29 03:03:27,005 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 134 transitions, 344 flow [2023-11-29 03:03:27,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 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 03:03:27,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:03:27,006 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:03:27,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:03:27,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:03:27,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:03:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash -139937195, now seen corresponding path program 1 times [2023-11-29 03:03:27,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:03:27,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165891969] [2023-11-29 03:03:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:27,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:03:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:27,131 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 03:03:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:03:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165891969] [2023-11-29 03:03:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165891969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:03:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585719603] [2023-11-29 03:03:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:27,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:03:27,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:03:27,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:03:27,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:03:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:27,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:03:27,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:03:27,300 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 03:03:27,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:03:27,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585719603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:03:27,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:03:27,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 03:03:27,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383154190] [2023-11-29 03:03:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:03:27,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:03:27,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:03:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:03:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:03:27,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-29 03:03:27,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 134 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 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 03:03:27,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:03:27,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-29 03:03:27,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:03:29,231 INFO L124 PetriNetUnfolderBase]: 10283/20239 cut-off events. [2023-11-29 03:03:29,231 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-29 03:03:29,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34074 conditions, 20239 events. 10283/20239 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 188288 event pairs, 6869 based on Foata normal form. 3/15359 useless extension candidates. Maximal degree in co-relation 34001. Up to 13540 conditions per place. [2023-11-29 03:03:29,334 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 54 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2023-11-29 03:03:29,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 131 transitions, 474 flow [2023-11-29 03:03:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:03:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:03:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2023-11-29 03:03:29,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794871794871795 [2023-11-29 03:03:29,338 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 452 transitions. [2023-11-29 03:03:29,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 452 transitions. [2023-11-29 03:03:29,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:03:29,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 452 transitions. [2023-11-29 03:03:29,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.33333333333333) internal successors, (452), 6 states have internal predecessors, (452), 0 states have call successors, (0), 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 03:03:29,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 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 03:03:29,346 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 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 03:03:29,346 INFO L175 Difference]: Start difference. First operand has 121 places, 134 transitions, 344 flow. Second operand 6 states and 452 transitions. [2023-11-29 03:03:29,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 131 transitions, 474 flow [2023-11-29 03:03:29,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 131 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:03:29,351 INFO L231 Difference]: Finished difference. Result has 123 places, 131 transitions, 366 flow [2023-11-29 03:03:29,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=123, PETRI_TRANSITIONS=131} [2023-11-29 03:03:29,352 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2023-11-29 03:03:29,352 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 131 transitions, 366 flow [2023-11-29 03:03:29,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 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 03:03:29,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:03:29,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 03:03:29,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:03:29,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:03:29,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:03:29,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:03:29,554 INFO L85 PathProgramCache]: Analyzing trace with hash -43084687, now seen corresponding path program 1 times [2023-11-29 03:03:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:03:29,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538572752] [2023-11-29 03:03:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:29,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:03:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:29,644 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 03:03:29,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:03:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538572752] [2023-11-29 03:03:29,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538572752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:03:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510804723] [2023-11-29 03:03:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:29,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:03:29,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:03:29,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:03:29,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:03:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:29,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:03:29,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:03:29,784 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 03:03:29,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:03:29,827 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 03:03:29,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510804723] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:03:29,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:03:29,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 03:03:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519573871] [2023-11-29 03:03:29,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:03:29,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:03:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:03:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:03:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:03:29,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-29 03:03:29,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 366 flow. Second operand has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 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 03:03:29,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:03:29,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-29 03:03:29,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:03:31,548 INFO L124 PetriNetUnfolderBase]: 10292/20275 cut-off events. [2023-11-29 03:03:31,548 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-29 03:03:31,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34215 conditions, 20275 events. 10292/20275 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 188679 event pairs, 6869 based on Foata normal form. 9/15401 useless extension candidates. Maximal degree in co-relation 34003. Up to 13555 conditions per place. [2023-11-29 03:03:31,666 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 61 selfloop transitions, 37 changer transitions 0/158 dead transitions. [2023-11-29 03:03:31,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 158 transitions, 736 flow [2023-11-29 03:03:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:03:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:03:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 737 transitions. [2023-11-29 03:03:31,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566923076923077 [2023-11-29 03:03:31,671 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 737 transitions. [2023-11-29 03:03:31,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 737 transitions. [2023-11-29 03:03:31,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:03:31,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 737 transitions. [2023-11-29 03:03:31,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 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 03:03:31,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 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 03:03:31,678 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 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 03:03:31,678 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 366 flow. Second operand 10 states and 737 transitions. [2023-11-29 03:03:31,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 158 transitions, 736 flow [2023-11-29 03:03:31,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 158 transitions, 653 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-29 03:03:31,685 INFO L231 Difference]: Finished difference. Result has 130 places, 158 transitions, 581 flow [2023-11-29 03:03:31,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=581, PETRI_PLACES=130, PETRI_TRANSITIONS=158} [2023-11-29 03:03:31,686 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 10 predicate places. [2023-11-29 03:03:31,687 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 158 transitions, 581 flow [2023-11-29 03:03:31,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 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 03:03:31,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:03:31,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:03:31,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:03:31,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:03:31,889 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:03:31,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:03:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash -48530463, now seen corresponding path program 1 times [2023-11-29 03:03:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:03:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487892535] [2023-11-29 03:03:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:03:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:32,021 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 03:03:32,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:03:32,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487892535] [2023-11-29 03:03:32,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487892535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:03:32,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:03:32,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:03:32,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862210318] [2023-11-29 03:03:32,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:03:32,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:03:32,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:03:32,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:03:32,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:03:32,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-29 03:03:32,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 158 transitions, 581 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 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 03:03:32,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:03:32,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-29 03:03:32,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:03:35,062 INFO L124 PetriNetUnfolderBase]: 22503/43703 cut-off events. [2023-11-29 03:03:35,062 INFO L125 PetriNetUnfolderBase]: For 367/367 co-relation queries the response was YES. [2023-11-29 03:03:35,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74020 conditions, 43703 events. 22503/43703 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 2118. Compared 446059 event pairs, 14986 based on Foata normal form. 250/33708 useless extension candidates. Maximal degree in co-relation 73893. Up to 14818 conditions per place. [2023-11-29 03:03:35,274 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 153 selfloop transitions, 9 changer transitions 0/223 dead transitions. [2023-11-29 03:03:35,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 223 transitions, 1114 flow [2023-11-29 03:03:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:03:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:03:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2023-11-29 03:03:35,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696923076923077 [2023-11-29 03:03:35,277 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2023-11-29 03:03:35,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2023-11-29 03:03:35,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:03:35,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2023-11-29 03:03:35,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 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 03:03:35,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 03:03:35,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 03:03:35,280 INFO L175 Difference]: Start difference. First operand has 130 places, 158 transitions, 581 flow. Second operand 5 states and 453 transitions. [2023-11-29 03:03:35,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 223 transitions, 1114 flow [2023-11-29 03:03:35,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 223 transitions, 1067 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-29 03:03:35,285 INFO L231 Difference]: Finished difference. Result has 134 places, 159 transitions, 578 flow [2023-11-29 03:03:35,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=134, PETRI_TRANSITIONS=159} [2023-11-29 03:03:35,286 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 14 predicate places. [2023-11-29 03:03:35,286 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 159 transitions, 578 flow [2023-11-29 03:03:35,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 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 03:03:35,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:03:35,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:03:35,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:03:35,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:03:35,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:03:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1504443233, now seen corresponding path program 1 times [2023-11-29 03:03:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:03:35,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877784082] [2023-11-29 03:03:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:03:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:35,384 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 03:03:35,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:03:35,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877784082] [2023-11-29 03:03:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877784082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:03:35,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:03:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:03:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394229991] [2023-11-29 03:03:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:03:35,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:03:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:03:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:03:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:03:35,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-29 03:03:35,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 159 transitions, 578 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 03:03:35,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:03:35,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-29 03:03:35,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:03:41,495 INFO L124 PetriNetUnfolderBase]: 43508/84314 cut-off events. [2023-11-29 03:03:41,495 INFO L125 PetriNetUnfolderBase]: For 3113/3113 co-relation queries the response was YES. [2023-11-29 03:03:41,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144070 conditions, 84314 events. 43508/84314 cut-off events. For 3113/3113 co-relation queries the response was YES. Maximal size of possible extension queue 3899. Compared 932152 event pairs, 28848 based on Foata normal form. 498/65952 useless extension candidates. Maximal degree in co-relation 143859. Up to 28871 conditions per place. [2023-11-29 03:03:41,969 INFO L140 encePairwiseOnDemand]: 122/130 looper letters, 174 selfloop transitions, 7 changer transitions 0/242 dead transitions. [2023-11-29 03:03:41,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 242 transitions, 1260 flow [2023-11-29 03:03:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:03:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:03:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 462 transitions. [2023-11-29 03:03:41,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7107692307692308 [2023-11-29 03:03:41,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 462 transitions. [2023-11-29 03:03:41,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 462 transitions. [2023-11-29 03:03:41,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:03:41,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 462 transitions. [2023-11-29 03:03:41,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 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 03:03:41,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 03:03:41,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 03:03:41,976 INFO L175 Difference]: Start difference. First operand has 134 places, 159 transitions, 578 flow. Second operand 5 states and 462 transitions. [2023-11-29 03:03:41,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 242 transitions, 1260 flow [2023-11-29 03:03:41,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 242 transitions, 1255 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 03:03:41,988 INFO L231 Difference]: Finished difference. Result has 140 places, 163 transitions, 638 flow [2023-11-29 03:03:41,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=638, PETRI_PLACES=140, PETRI_TRANSITIONS=163} [2023-11-29 03:03:41,989 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 20 predicate places. [2023-11-29 03:03:41,989 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 163 transitions, 638 flow [2023-11-29 03:03:41,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 03:03:41,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:03:41,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:03:41,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:03:41,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:03:41,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:03:41,991 INFO L85 PathProgramCache]: Analyzing trace with hash 603358844, now seen corresponding path program 1 times [2023-11-29 03:03:41,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:03:41,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163444394] [2023-11-29 03:03:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:41,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:03:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:42,125 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 03:03:42,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:03:42,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163444394] [2023-11-29 03:03:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163444394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:03:42,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:03:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:03:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74732404] [2023-11-29 03:03:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:03:42,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:03:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:03:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:03:42,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:03:42,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-29 03:03:42,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 163 transitions, 638 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 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 03:03:42,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:03:42,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-29 03:03:42,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:03:55,278 INFO L124 PetriNetUnfolderBase]: 90644/175244 cut-off events. [2023-11-29 03:03:55,278 INFO L125 PetriNetUnfolderBase]: For 1193/1193 co-relation queries the response was YES. [2023-11-29 03:03:55,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296893 conditions, 175244 events. 90644/175244 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 7584. Compared 2100368 event pairs, 60400 based on Foata normal form. 1088/135234 useless extension candidates. Maximal degree in co-relation 296680. Up to 59676 conditions per place. [2023-11-29 03:03:56,283 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 139 selfloop transitions, 11 changer transitions 0/213 dead transitions. [2023-11-29 03:03:56,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 213 transitions, 1044 flow [2023-11-29 03:03:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:03:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:03:56,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-11-29 03:03:56,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2023-11-29 03:03:56,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-11-29 03:03:56,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-11-29 03:03:56,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:03:56,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-11-29 03:03:56,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 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 03:03:56,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 03:03:56,289 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 03:03:56,289 INFO L175 Difference]: Start difference. First operand has 140 places, 163 transitions, 638 flow. Second operand 5 states and 450 transitions. [2023-11-29 03:03:56,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 213 transitions, 1044 flow [2023-11-29 03:03:56,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 1042 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 03:03:56,294 INFO L231 Difference]: Finished difference. Result has 146 places, 164 transitions, 676 flow [2023-11-29 03:03:56,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=676, PETRI_PLACES=146, PETRI_TRANSITIONS=164} [2023-11-29 03:03:56,295 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 26 predicate places. [2023-11-29 03:03:56,295 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 164 transitions, 676 flow [2023-11-29 03:03:56,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 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 03:03:56,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:03:56,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:03:56,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:03:56,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:03:56,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:03:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1340261602, now seen corresponding path program 1 times [2023-11-29 03:03:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:03:56,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924715175] [2023-11-29 03:03:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:03:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:03:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:03:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924715175] [2023-11-29 03:03:56,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924715175] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:03:56,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91101328] [2023-11-29 03:03:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:56,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:03:56,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:03:56,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:03:56,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:03:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:56,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:03:56,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:03:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:03:56,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:03:56,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91101328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:03:56,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:03:56,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-29 03:03:56,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027821466] [2023-11-29 03:03:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:03:56,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:03:56,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:03:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:03:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:03:56,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 130 [2023-11-29 03:03:56,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 164 transitions, 676 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 03:03:56,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:03:56,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 130 [2023-11-29 03:03:56,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:04:09,244 INFO L124 PetriNetUnfolderBase]: 82272/161788 cut-off events. [2023-11-29 03:04:09,245 INFO L125 PetriNetUnfolderBase]: For 5642/5642 co-relation queries the response was YES. [2023-11-29 03:04:09,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272536 conditions, 161788 events. 82272/161788 cut-off events. For 5642/5642 co-relation queries the response was YES. Maximal size of possible extension queue 7088. Compared 1954950 event pairs, 54952 based on Foata normal form. 1000/123816 useless extension candidates. Maximal degree in co-relation 272316. Up to 108402 conditions per place. [2023-11-29 03:04:10,142 INFO L140 encePairwiseOnDemand]: 128/130 looper letters, 97 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2023-11-29 03:04:10,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 162 transitions, 858 flow [2023-11-29 03:04:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:04:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:04:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-11-29 03:04:10,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2023-11-29 03:04:10,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-11-29 03:04:10,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-11-29 03:04:10,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:04:10,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-11-29 03:04:10,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 03:04:10,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 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 03:04:10,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 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 03:04:10,145 INFO L175 Difference]: Start difference. First operand has 146 places, 164 transitions, 676 flow. Second operand 3 states and 264 transitions. [2023-11-29 03:04:10,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 162 transitions, 858 flow [2023-11-29 03:04:10,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 162 transitions, 835 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:04:10,149 INFO L231 Difference]: Finished difference. Result has 142 places, 162 transitions, 641 flow [2023-11-29 03:04:10,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=641, PETRI_PLACES=142, PETRI_TRANSITIONS=162} [2023-11-29 03:04:10,150 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 22 predicate places. [2023-11-29 03:04:10,150 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 162 transitions, 641 flow [2023-11-29 03:04:10,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 03:04:10,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:04:10,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:10,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:04:10,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 03:04:10,351 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:04:10,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1524256132, now seen corresponding path program 1 times [2023-11-29 03:04:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:04:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679683224] [2023-11-29 03:04:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:04:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:10,451 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 03:04:10,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:04:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679683224] [2023-11-29 03:04:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679683224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:10,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:10,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:04:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660393769] [2023-11-29 03:04:10,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:10,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:04:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:04:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:04:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:04:10,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-29 03:04:10,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 162 transitions, 641 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 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 03:04:10,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:04:10,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-29 03:04:10,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:04:23,406 INFO L124 PetriNetUnfolderBase]: 88712/170536 cut-off events. [2023-11-29 03:04:23,406 INFO L125 PetriNetUnfolderBase]: For 6704/6704 co-relation queries the response was YES. [2023-11-29 03:04:23,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292636 conditions, 170536 events. 88712/170536 cut-off events. For 6704/6704 co-relation queries the response was YES. Maximal size of possible extension queue 7564. Compared 2032003 event pairs, 57976 based on Foata normal form. 1076/133842 useless extension candidates. Maximal degree in co-relation 292616. Up to 57987 conditions per place. [2023-11-29 03:04:24,592 INFO L140 encePairwiseOnDemand]: 121/130 looper letters, 197 selfloop transitions, 14 changer transitions 0/272 dead transitions. [2023-11-29 03:04:24,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 272 transitions, 1437 flow [2023-11-29 03:04:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:04:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 03:04:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 694 transitions. [2023-11-29 03:04:24,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6673076923076923 [2023-11-29 03:04:24,596 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 694 transitions. [2023-11-29 03:04:24,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 694 transitions. [2023-11-29 03:04:24,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:04:24,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 694 transitions. [2023-11-29 03:04:24,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.75) internal successors, (694), 8 states have internal predecessors, (694), 0 states have call successors, (0), 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 03:04:24,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 130.0) internal successors, (1170), 9 states have internal predecessors, (1170), 0 states have call successors, (0), 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 03:04:24,603 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 130.0) internal successors, (1170), 9 states have internal predecessors, (1170), 0 states have call successors, (0), 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 03:04:24,604 INFO L175 Difference]: Start difference. First operand has 142 places, 162 transitions, 641 flow. Second operand 8 states and 694 transitions. [2023-11-29 03:04:24,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 272 transitions, 1437 flow [2023-11-29 03:04:24,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 272 transitions, 1436 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:04:24,617 INFO L231 Difference]: Finished difference. Result has 153 places, 170 transitions, 775 flow [2023-11-29 03:04:24,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=775, PETRI_PLACES=153, PETRI_TRANSITIONS=170} [2023-11-29 03:04:24,618 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 33 predicate places. [2023-11-29 03:04:24,619 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 170 transitions, 775 flow [2023-11-29 03:04:24,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 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 03:04:24,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:04:24,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:24,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:04:24,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:04:24,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:24,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1171527309, now seen corresponding path program 1 times [2023-11-29 03:04:24,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:04:24,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137841122] [2023-11-29 03:04:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:24,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:04:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:04:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137841122] [2023-11-29 03:04:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137841122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:04:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324507197] [2023-11-29 03:04:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:24,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:04:24,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:04:24,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:04:24,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:04:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:24,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:04:24,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:04:24,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:24,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324507197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:24,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:04:24,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-29 03:04:24,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229142103] [2023-11-29 03:04:24,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:24,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:04:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:04:24,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:04:24,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:04:24,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 130 [2023-11-29 03:04:24,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 170 transitions, 775 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 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 03:04:24,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:04:24,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 130 [2023-11-29 03:04:24,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:04:37,744 INFO L124 PetriNetUnfolderBase]: 82256/161756 cut-off events. [2023-11-29 03:04:37,744 INFO L125 PetriNetUnfolderBase]: For 4228/4228 co-relation queries the response was YES. [2023-11-29 03:04:38,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272529 conditions, 161756 events. 82256/161756 cut-off events. For 4228/4228 co-relation queries the response was YES. Maximal size of possible extension queue 7044. Compared 1952024 event pairs, 54952 based on Foata normal form. 996/123780 useless extension candidates. Maximal degree in co-relation 272503. Up to 108391 conditions per place. [2023-11-29 03:04:38,835 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 99 selfloop transitions, 6 changer transitions 0/168 dead transitions. [2023-11-29 03:04:38,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 168 transitions, 972 flow [2023-11-29 03:04:38,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:04:38,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:04:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-11-29 03:04:38,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2023-11-29 03:04:38,838 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-11-29 03:04:38,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-11-29 03:04:38,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:04:38,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-11-29 03:04:38,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 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 03:04:38,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 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 03:04:38,841 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 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 03:04:38,841 INFO L175 Difference]: Start difference. First operand has 153 places, 170 transitions, 775 flow. Second operand 4 states and 332 transitions. [2023-11-29 03:04:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 168 transitions, 972 flow [2023-11-29 03:04:38,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 168 transitions, 950 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:04:38,847 INFO L231 Difference]: Finished difference. Result has 151 places, 168 transitions, 752 flow [2023-11-29 03:04:38,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=752, PETRI_PLACES=151, PETRI_TRANSITIONS=168} [2023-11-29 03:04:38,848 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 31 predicate places. [2023-11-29 03:04:38,848 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 168 transitions, 752 flow [2023-11-29 03:04:38,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 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 03:04:38,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:04:38,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:38,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:04:39,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3548a0-c73d-414f-92a9-dd5af7fac782/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:04:39,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:04:39,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2627582, now seen corresponding path program 1 times [2023-11-29 03:04:39,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:04:39,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580957582] [2023-11-29 03:04:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:39,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:04:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:39,162 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 03:04:39,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:04:39,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580957582] [2023-11-29 03:04:39,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580957582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:39,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:39,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:04:39,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036515117] [2023-11-29 03:04:39,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:39,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:04:39,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:04:39,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:04:39,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:04:39,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-29 03:04:39,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 168 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 03:04:39,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:04:39,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-29 03:04:39,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:04:53,253 INFO L124 PetriNetUnfolderBase]: 92204/178262 cut-off events. [2023-11-29 03:04:53,253 INFO L125 PetriNetUnfolderBase]: For 1346/1346 co-relation queries the response was YES. [2023-11-29 03:04:53,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302367 conditions, 178262 events. 92204/178262 cut-off events. For 1346/1346 co-relation queries the response was YES. Maximal size of possible extension queue 8052. Compared 2150276 event pairs, 61388 based on Foata normal form. 1016/137854 useless extension candidates. Maximal degree in co-relation 302343. Up to 62248 conditions per place. [2023-11-29 03:04:54,707 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 135 selfloop transitions, 22 changer transitions 0/218 dead transitions. [2023-11-29 03:04:54,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 218 transitions, 1172 flow [2023-11-29 03:04:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:04:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:04:54,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-11-29 03:04:54,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2023-11-29 03:04:54,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-11-29 03:04:54,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-11-29 03:04:54,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:04:54,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-11-29 03:04:54,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 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 03:04:54,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 03:04:54,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 03:04:54,713 INFO L175 Difference]: Start difference. First operand has 151 places, 168 transitions, 752 flow. Second operand 5 states and 450 transitions. [2023-11-29 03:04:54,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 218 transitions, 1172 flow [2023-11-29 03:04:54,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 218 transitions, 1165 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:04:54,721 INFO L231 Difference]: Finished difference. Result has 155 places, 169 transitions, 808 flow [2023-11-29 03:04:54,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=808, PETRI_PLACES=155, PETRI_TRANSITIONS=169} [2023-11-29 03:04:54,722 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 35 predicate places. [2023-11-29 03:04:54,722 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 169 transitions, 808 flow [2023-11-29 03:04:54,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 03:04:54,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:04:54,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:54,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:04:54,723 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-29 03:04:54,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:54,724 INFO L85 PathProgramCache]: Analyzing trace with hash -883507289, now seen corresponding path program 1 times [2023-11-29 03:04:54,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:04:54,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207598587] [2023-11-29 03:04:54,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:54,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:04:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:54,773 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 03:04:54,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:04:54,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207598587] [2023-11-29 03:04:54,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207598587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:54,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:54,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:04:54,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652763077] [2023-11-29 03:04:54,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:54,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:04:54,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:04:54,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:04:54,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:04:54,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-29 03:04:54,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 169 transitions, 808 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 03:04:54,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:04:54,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-29 03:04:54,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand