./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/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_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/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_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/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 e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:11:32,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:11:32,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:11:32,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:11:32,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:11:32,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:11:32,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:11:32,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:11:32,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:11:32,505 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:11:32,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:11:32,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:11:32,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:11:32,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:11:32,508 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:11:32,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:11:32,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:11:32,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:11:32,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:11:32,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:11:32,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:11:32,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:11:32,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:11:32,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:11:32,516 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:11:32,517 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:11:32,517 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:11:32,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:11:32,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:11:32,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:11:32,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:11:32,519 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:11:32,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:11:32,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:11:32,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:11:32,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:11:32,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:11:32,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:11:32,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:11:32,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:11:32,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:11:32,521 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:11:32,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:11:32,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:11:32,522 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_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 [2023-11-29 02:11:32,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:11:32,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:11:32,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:11:32,759 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:11:32,759 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:11:32,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-29 02:11:35,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:11:35,680 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:11:35,681 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-29 02:11:35,690 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/data/596126e1e/d5ca655065ea4b10b86efcf2c04f2e43/FLAG87e0835ec [2023-11-29 02:11:35,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/data/596126e1e/d5ca655065ea4b10b86efcf2c04f2e43 [2023-11-29 02:11:35,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:11:35,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:11:35,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:11:35,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:11:35,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:11:35,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:35,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5306aca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35, skipping insertion in model container [2023-11-29 02:11:35,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:35,742 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:11:35,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:11:35,943 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:11:35,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:11:35,979 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:11:35,980 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:11:35,987 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:11:35,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35 WrapperNode [2023-11-29 02:11:35,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:11:35,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:11:35,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:11:35,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:11:35,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,031 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 131 [2023-11-29 02:11:36,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:11:36,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:11:36,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:11:36,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:11:36,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,065 INFO L175 MemorySlicer]: Split 14 memory accesses to 5 slices as follows [2, 2, 2, 2, 6]. 43 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, 1, 1, 1, 3]. [2023-11-29 02:11:36,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:11:36,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:11:36,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:11:36,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:11:36,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (1/1) ... [2023-11-29 02:11:36,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:11:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:36,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:11:36,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:11:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:11:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:11:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:11:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:11:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:11:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:11:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 02:11:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:11:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:11:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:11:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:11:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 02:11:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 02:11:36,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 02:11:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 02:11:36,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 02:11:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 02:11:36,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 02:11:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:11:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:11:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:11:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:11:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:11:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 02:11:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 02:11:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:11:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:11:36,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:11:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:11:36,167 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 02:11:36,283 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:11:36,285 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:11:36,587 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:11:36,847 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:11:36,847 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 02:11:36,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:11:36 BoogieIcfgContainer [2023-11-29 02:11:36,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:11:36,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:11:36,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:11:36,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:11:36,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:11:35" (1/3) ... [2023-11-29 02:11:36,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79785ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:11:36, skipping insertion in model container [2023-11-29 02:11:36,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:11:35" (2/3) ... [2023-11-29 02:11:36,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79785ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:11:36, skipping insertion in model container [2023-11-29 02:11:36,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:11:36" (3/3) ... [2023-11-29 02:11:36,858 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-11-29 02:11:36,867 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:11:36,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:11:36,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 02:11:36,879 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:11:36,936 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 02:11:36,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 137 flow [2023-11-29 02:11:37,008 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2023-11-29 02:11:37,009 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 02:11:37,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 6/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-29 02:11:37,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 137 flow [2023-11-29 02:11:37,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 53 transitions, 121 flow [2023-11-29 02:11:37,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:11:37,036 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;@5c60b2e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:11:37,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-29 02:11:37,041 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:11:37,041 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 02:11:37,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:11:37,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:37,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 02:11:37,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:37,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:37,049 INFO L85 PathProgramCache]: Analyzing trace with hash 504277, now seen corresponding path program 1 times [2023-11-29 02:11:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:37,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691222012] [2023-11-29 02:11:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:37,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:37,330 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 02:11:37,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:37,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691222012] [2023-11-29 02:11:37,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691222012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:37,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:37,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:11:37,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829338942] [2023-11-29 02:11:37,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:37,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:11:37,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:11:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:11:37,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 58 [2023-11-29 02:11:37,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 02:11:37,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:37,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 58 [2023-11-29 02:11:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:37,680 INFO L124 PetriNetUnfolderBase]: 509/1030 cut-off events. [2023-11-29 02:11:37,680 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-29 02:11:37,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 1030 events. 509/1030 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5604 event pairs, 345 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 1478. Up to 700 conditions per place. [2023-11-29 02:11:37,696 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 32 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-11-29 02:11:37,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 211 flow [2023-11-29 02:11:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 02:11:37,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818965517241379 [2023-11-29 02:11:37,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 02:11:37,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 02:11:37,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:37,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 02:11:37,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:37,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:37,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:37,725 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 121 flow. Second operand 4 states and 135 transitions. [2023-11-29 02:11:37,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 211 flow [2023-11-29 02:11:37,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 202 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:37,734 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 172 flow [2023-11-29 02:11:37,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-11-29 02:11:37,739 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-11-29 02:11:37,739 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 172 flow [2023-11-29 02:11:37,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 02:11:37,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:37,740 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 02:11:37,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:11:37,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:37,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:37,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2138520418, now seen corresponding path program 1 times [2023-11-29 02:11:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:37,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022019703] [2023-11-29 02:11:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:37,877 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 02:11:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022019703] [2023-11-29 02:11:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022019703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:37,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762948101] [2023-11-29 02:11:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:37,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:37,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:37,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:37,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:11:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:37,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:11:37,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:38,024 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 02:11:38,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762948101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:38,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:38,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 02:11:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054595090] [2023-11-29 02:11:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:38,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:11:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:11:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:11:38,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 58 [2023-11-29 02:11:38,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 02:11:38,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:38,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 58 [2023-11-29 02:11:38,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:38,284 INFO L124 PetriNetUnfolderBase]: 509/1028 cut-off events. [2023-11-29 02:11:38,284 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-29 02:11:38,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 1028 events. 509/1028 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5590 event pairs, 345 based on Foata normal form. 2/878 useless extension candidates. Maximal degree in co-relation 1744. Up to 690 conditions per place. [2023-11-29 02:11:38,295 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 25 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2023-11-29 02:11:38,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 238 flow [2023-11-29 02:11:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:11:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:11:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2023-11-29 02:11:38,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2023-11-29 02:11:38,298 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 177 transitions. [2023-11-29 02:11:38,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 177 transitions. [2023-11-29 02:11:38,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:38,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 177 transitions. [2023-11-29 02:11:38,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 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 02:11:38,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:38,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:38,302 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 172 flow. Second operand 6 states and 177 transitions. [2023-11-29 02:11:38,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 238 flow [2023-11-29 02:11:38,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:11:38,305 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 188 flow [2023-11-29 02:11:38,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-29 02:11:38,306 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-11-29 02:11:38,306 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 188 flow [2023-11-29 02:11:38,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 02:11:38,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:38,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:38,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:11:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:38,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:38,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1931507130, now seen corresponding path program 1 times [2023-11-29 02:11:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:38,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554304703] [2023-11-29 02:11:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:38,594 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 02:11:38,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:38,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554304703] [2023-11-29 02:11:38,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554304703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:38,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:38,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:11:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803908914] [2023-11-29 02:11:38,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:38,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:11:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:11:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:11:38,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 58 [2023-11-29 02:11:38,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 02:11:38,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:38,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 58 [2023-11-29 02:11:38,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:38,910 INFO L124 PetriNetUnfolderBase]: 1011/1830 cut-off events. [2023-11-29 02:11:38,911 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-29 02:11:38,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3305 conditions, 1830 events. 1011/1830 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10360 event pairs, 515 based on Foata normal form. 50/1606 useless extension candidates. Maximal degree in co-relation 3246. Up to 1051 conditions per place. [2023-11-29 02:11:38,927 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 62 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-11-29 02:11:38,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 384 flow [2023-11-29 02:11:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2023-11-29 02:11:38,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6982758620689655 [2023-11-29 02:11:38,930 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 162 transitions. [2023-11-29 02:11:38,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 162 transitions. [2023-11-29 02:11:38,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:38,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 162 transitions. [2023-11-29 02:11:38,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 02:11:38,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:38,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:38,933 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 188 flow. Second operand 4 states and 162 transitions. [2023-11-29 02:11:38,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 384 flow [2023-11-29 02:11:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 356 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:38,937 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 189 flow [2023-11-29 02:11:38,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-11-29 02:11:38,938 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-11-29 02:11:38,938 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 189 flow [2023-11-29 02:11:38,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 02:11:38,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:38,939 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 02:11:38,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:11:38,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:38,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1869624028, now seen corresponding path program 1 times [2023-11-29 02:11:38,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487762236] [2023-11-29 02:11:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:39,030 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 02:11:39,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487762236] [2023-11-29 02:11:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487762236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:39,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261882945] [2023-11-29 02:11:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:39,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:39,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:39,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:39,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:11:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:39,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:11:39,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:39,160 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 02:11:39,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:39,204 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 02:11:39,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261882945] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:39,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:39,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 02:11:39,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166631453] [2023-11-29 02:11:39,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:39,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:11:39,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:39,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:11:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:11:39,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 58 [2023-11-29 02:11:39,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 189 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 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 02:11:39,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:39,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 58 [2023-11-29 02:11:39,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:39,563 INFO L124 PetriNetUnfolderBase]: 781/1579 cut-off events. [2023-11-29 02:11:39,564 INFO L125 PetriNetUnfolderBase]: For 466/482 co-relation queries the response was YES. [2023-11-29 02:11:39,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 1579 events. 781/1579 cut-off events. For 466/482 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9708 event pairs, 515 based on Foata normal form. 6/1388 useless extension candidates. Maximal degree in co-relation 3125. Up to 1043 conditions per place. [2023-11-29 02:11:39,579 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 33 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2023-11-29 02:11:39,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 389 flow [2023-11-29 02:11:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:11:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:11:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2023-11-29 02:11:39,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017241379310344 [2023-11-29 02:11:39,582 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 291 transitions. [2023-11-29 02:11:39,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 291 transitions. [2023-11-29 02:11:39,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:39,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 291 transitions. [2023-11-29 02:11:39,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 29.1) internal successors, (291), 10 states have internal predecessors, (291), 0 states have call successors, (0), 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 02:11:39,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 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 02:11:39,590 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 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 02:11:39,590 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 189 flow. Second operand 10 states and 291 transitions. [2023-11-29 02:11:39,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 389 flow [2023-11-29 02:11:39,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:11:39,596 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 354 flow [2023-11-29 02:11:39,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2023-11-29 02:11:39,597 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2023-11-29 02:11:39,597 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 354 flow [2023-11-29 02:11:39,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 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 02:11:39,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:39,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:39,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:11:39,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:39,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:39,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1852587339, now seen corresponding path program 1 times [2023-11-29 02:11:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675794841] [2023-11-29 02:11:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:39,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675794841] [2023-11-29 02:11:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675794841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:11:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644095379] [2023-11-29 02:11:39,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:39,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:11:39,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:39,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:11:39,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:11:39,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2023-11-29 02:11:39,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 354 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 02:11:39,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:39,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2023-11-29 02:11:39,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:40,296 INFO L124 PetriNetUnfolderBase]: 1142/2276 cut-off events. [2023-11-29 02:11:40,297 INFO L125 PetriNetUnfolderBase]: For 538/578 co-relation queries the response was YES. [2023-11-29 02:11:40,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 2276 events. 1142/2276 cut-off events. For 538/578 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14221 event pairs, 690 based on Foata normal form. 50/2093 useless extension candidates. Maximal degree in co-relation 4428. Up to 1032 conditions per place. [2023-11-29 02:11:40,316 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 91 selfloop transitions, 13 changer transitions 0/126 dead transitions. [2023-11-29 02:11:40,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 126 transitions, 744 flow [2023-11-29 02:11:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:11:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:11:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2023-11-29 02:11:40,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6810344827586207 [2023-11-29 02:11:40,318 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 237 transitions. [2023-11-29 02:11:40,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 237 transitions. [2023-11-29 02:11:40,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:40,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 237 transitions. [2023-11-29 02:11:40,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 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 02:11:40,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:40,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:40,321 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 354 flow. Second operand 6 states and 237 transitions. [2023-11-29 02:11:40,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 126 transitions, 744 flow [2023-11-29 02:11:40,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 710 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 02:11:40,327 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 389 flow [2023-11-29 02:11:40,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-11-29 02:11:40,329 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2023-11-29 02:11:40,329 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 389 flow [2023-11-29 02:11:40,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 02:11:40,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:40,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:40,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:11:40,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:40,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:40,330 INFO L85 PathProgramCache]: Analyzing trace with hash -662468996, now seen corresponding path program 1 times [2023-11-29 02:11:40,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:40,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608517924] [2023-11-29 02:11:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:40,392 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 02:11:40,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608517924] [2023-11-29 02:11:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608517924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:40,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:40,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:11:40,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600780038] [2023-11-29 02:11:40,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:11:40,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:11:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:11:40,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 58 [2023-11-29 02:11:40,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 02:11:40,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:40,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 58 [2023-11-29 02:11:40,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:41,156 INFO L124 PetriNetUnfolderBase]: 2984/5364 cut-off events. [2023-11-29 02:11:41,156 INFO L125 PetriNetUnfolderBase]: For 2672/2732 co-relation queries the response was YES. [2023-11-29 02:11:41,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12005 conditions, 5364 events. 2984/5364 cut-off events. For 2672/2732 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 35839 event pairs, 1583 based on Foata normal form. 128/5002 useless extension candidates. Maximal degree in co-relation 11907. Up to 2984 conditions per place. [2023-11-29 02:11:41,208 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 99 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2023-11-29 02:11:41,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 122 transitions, 749 flow [2023-11-29 02:11:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2023-11-29 02:11:41,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2023-11-29 02:11:41,210 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 160 transitions. [2023-11-29 02:11:41,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 160 transitions. [2023-11-29 02:11:41,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:41,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 160 transitions. [2023-11-29 02:11:41,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 02:11:41,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:41,212 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:41,212 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 389 flow. Second operand 4 states and 160 transitions. [2023-11-29 02:11:41,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 122 transitions, 749 flow [2023-11-29 02:11:41,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 122 transitions, 737 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 02:11:41,221 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 406 flow [2023-11-29 02:11:41,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2023-11-29 02:11:41,222 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2023-11-29 02:11:41,222 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 406 flow [2023-11-29 02:11:41,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 02:11:41,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:41,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:41,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:11:41,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:41,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1429294642, now seen corresponding path program 1 times [2023-11-29 02:11:41,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:41,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348540746] [2023-11-29 02:11:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:41,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:41,281 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 02:11:41,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:41,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348540746] [2023-11-29 02:11:41,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348540746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:41,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:41,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:11:41,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133396314] [2023-11-29 02:11:41,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:41,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:11:41,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:41,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:11:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:11:41,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 58 [2023-11-29 02:11:41,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 02:11:41,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:41,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 58 [2023-11-29 02:11:41,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:42,016 INFO L124 PetriNetUnfolderBase]: 4236/7244 cut-off events. [2023-11-29 02:11:42,017 INFO L125 PetriNetUnfolderBase]: For 5366/6134 co-relation queries the response was YES. [2023-11-29 02:11:42,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17660 conditions, 7244 events. 4236/7244 cut-off events. For 5366/6134 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 47434 event pairs, 1986 based on Foata normal form. 356/6995 useless extension candidates. Maximal degree in co-relation 17560. Up to 3787 conditions per place. [2023-11-29 02:11:42,093 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 106 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-11-29 02:11:42,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 810 flow [2023-11-29 02:11:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2023-11-29 02:11:42,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2023-11-29 02:11:42,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 160 transitions. [2023-11-29 02:11:42,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 160 transitions. [2023-11-29 02:11:42,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:42,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 160 transitions. [2023-11-29 02:11:42,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 02:11:42,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:42,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:42,098 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 406 flow. Second operand 4 states and 160 transitions. [2023-11-29 02:11:42,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 810 flow [2023-11-29 02:11:42,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 129 transitions, 801 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:11:42,107 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 425 flow [2023-11-29 02:11:42,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=425, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2023-11-29 02:11:42,108 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2023-11-29 02:11:42,109 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 425 flow [2023-11-29 02:11:42,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 02:11:42,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:42,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:42,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:11:42,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:42,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash 419498933, now seen corresponding path program 1 times [2023-11-29 02:11:42,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:42,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096313000] [2023-11-29 02:11:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:42,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:42,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:42,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096313000] [2023-11-29 02:11:42,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096313000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:42,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644037543] [2023-11-29 02:11:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:42,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:42,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:42,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:42,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:11:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:11:42,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:42,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:42,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644037543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:42,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:42,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 02:11:42,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358437646] [2023-11-29 02:11:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:42,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:11:42,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:11:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:11:42,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 58 [2023-11-29 02:11:42,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 425 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 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 02:11:42,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:42,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 58 [2023-11-29 02:11:42,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:43,071 INFO L124 PetriNetUnfolderBase]: 3000/4956 cut-off events. [2023-11-29 02:11:43,071 INFO L125 PetriNetUnfolderBase]: For 2958/3583 co-relation queries the response was YES. [2023-11-29 02:11:43,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12842 conditions, 4956 events. 3000/4956 cut-off events. For 2958/3583 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 30346 event pairs, 946 based on Foata normal form. 313/4846 useless extension candidates. Maximal degree in co-relation 12740. Up to 1939 conditions per place. [2023-11-29 02:11:43,111 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 119 selfloop transitions, 9 changer transitions 0/150 dead transitions. [2023-11-29 02:11:43,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 150 transitions, 889 flow [2023-11-29 02:11:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:11:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:11:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2023-11-29 02:11:43,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2023-11-29 02:11:43,113 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 236 transitions. [2023-11-29 02:11:43,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 236 transitions. [2023-11-29 02:11:43,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:43,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 236 transitions. [2023-11-29 02:11:43,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 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 02:11:43,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:43,116 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:43,116 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 425 flow. Second operand 6 states and 236 transitions. [2023-11-29 02:11:43,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 150 transitions, 889 flow [2023-11-29 02:11:43,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 150 transitions, 879 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:11:43,131 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 437 flow [2023-11-29 02:11:43,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=437, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2023-11-29 02:11:43,132 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2023-11-29 02:11:43,132 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 437 flow [2023-11-29 02:11:43,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 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 02:11:43,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:43,132 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 02:11:43,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 02:11:43,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:43,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:43,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:43,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1514211063, now seen corresponding path program 2 times [2023-11-29 02:11:43,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:43,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687740492] [2023-11-29 02:11:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:43,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:43,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687740492] [2023-11-29 02:11:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687740492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:43,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537941374] [2023-11-29 02:11:43,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:11:43,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:43,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:43,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:43,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:11:43,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:11:43,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:43,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:11:43,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:11:43,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:11:43,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537941374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:43,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:43,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 02:11:43,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84734731] [2023-11-29 02:11:43,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:43,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:11:43,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:43,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:11:43,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:11:43,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 58 [2023-11-29 02:11:43,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 437 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 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 02:11:43,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:43,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 58 [2023-11-29 02:11:43,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:44,403 INFO L124 PetriNetUnfolderBase]: 2775/4917 cut-off events. [2023-11-29 02:11:44,403 INFO L125 PetriNetUnfolderBase]: For 4665/5200 co-relation queries the response was YES. [2023-11-29 02:11:44,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13149 conditions, 4917 events. 2775/4917 cut-off events. For 4665/5200 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 31964 event pairs, 1986 based on Foata normal form. 189/4637 useless extension candidates. Maximal degree in co-relation 13010. Up to 3761 conditions per place. [2023-11-29 02:11:44,438 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 34 selfloop transitions, 36 changer transitions 0/91 dead transitions. [2023-11-29 02:11:44,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 91 transitions, 607 flow [2023-11-29 02:11:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 02:11:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 02:11:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 615 transitions. [2023-11-29 02:11:44,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418103448275862 [2023-11-29 02:11:44,442 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 615 transitions. [2023-11-29 02:11:44,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 615 transitions. [2023-11-29 02:11:44,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:44,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 615 transitions. [2023-11-29 02:11:44,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 25.625) internal successors, (615), 24 states have internal predecessors, (615), 0 states have call successors, (0), 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 02:11:44,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 58.0) internal successors, (1450), 25 states have internal predecessors, (1450), 0 states have call successors, (0), 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 02:11:44,449 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 58.0) internal successors, (1450), 25 states have internal predecessors, (1450), 0 states have call successors, (0), 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 02:11:44,449 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 437 flow. Second operand 24 states and 615 transitions. [2023-11-29 02:11:44,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 91 transitions, 607 flow [2023-11-29 02:11:44,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 91 transitions, 577 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:44,464 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 522 flow [2023-11-29 02:11:44,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=522, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2023-11-29 02:11:44,465 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 50 predicate places. [2023-11-29 02:11:44,465 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 522 flow [2023-11-29 02:11:44,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 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 02:11:44,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:44,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:44,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 02:11:44,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 02:11:44,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:44,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:44,667 INFO L85 PathProgramCache]: Analyzing trace with hash 119565581, now seen corresponding path program 1 times [2023-11-29 02:11:44,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:44,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40707852] [2023-11-29 02:11:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:44,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:44,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:44,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40707852] [2023-11-29 02:11:44,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40707852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:44,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269995231] [2023-11-29 02:11:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:44,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:44,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:44,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:44,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:11:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:44,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:11:44,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:44,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:44,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:44,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269995231] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:44,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:44,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 02:11:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127494712] [2023-11-29 02:11:44,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:44,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:11:44,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:44,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:11:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:11:44,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 58 [2023-11-29 02:11:44,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 522 flow. Second operand has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 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 02:11:44,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:44,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 58 [2023-11-29 02:11:44,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:45,904 INFO L124 PetriNetUnfolderBase]: 4809/7655 cut-off events. [2023-11-29 02:11:45,905 INFO L125 PetriNetUnfolderBase]: For 4447/5576 co-relation queries the response was YES. [2023-11-29 02:11:45,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18649 conditions, 7655 events. 4809/7655 cut-off events. For 4447/5576 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 46817 event pairs, 1570 based on Foata normal form. 677/7713 useless extension candidates. Maximal degree in co-relation 18559. Up to 3390 conditions per place. [2023-11-29 02:11:45,955 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 192 selfloop transitions, 15 changer transitions 0/228 dead transitions. [2023-11-29 02:11:45,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 228 transitions, 1374 flow [2023-11-29 02:11:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:11:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:11:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 399 transitions. [2023-11-29 02:11:45,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879310344827586 [2023-11-29 02:11:45,958 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 399 transitions. [2023-11-29 02:11:45,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 399 transitions. [2023-11-29 02:11:45,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:45,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 399 transitions. [2023-11-29 02:11:45,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 39.9) internal successors, (399), 10 states have internal predecessors, (399), 0 states have call successors, (0), 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 02:11:45,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 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 02:11:45,963 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 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 02:11:45,963 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 522 flow. Second operand 10 states and 399 transitions. [2023-11-29 02:11:45,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 228 transitions, 1374 flow [2023-11-29 02:11:45,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 228 transitions, 1273 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-11-29 02:11:45,977 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 499 flow [2023-11-29 02:11:45,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=499, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2023-11-29 02:11:45,978 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2023-11-29 02:11:45,978 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 499 flow [2023-11-29 02:11:45,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 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 02:11:45,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:45,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:45,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:11:46,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:11:46,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:46,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:46,184 INFO L85 PathProgramCache]: Analyzing trace with hash 549380215, now seen corresponding path program 1 times [2023-11-29 02:11:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:46,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514504994] [2023-11-29 02:11:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:11:46,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:46,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514504994] [2023-11-29 02:11:46,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514504994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:46,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:46,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:11:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398449616] [2023-11-29 02:11:46,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:46,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:11:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:11:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:11:46,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2023-11-29 02:11:46,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 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 02:11:46,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:46,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2023-11-29 02:11:46,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:47,229 INFO L124 PetriNetUnfolderBase]: 5350/9784 cut-off events. [2023-11-29 02:11:47,229 INFO L125 PetriNetUnfolderBase]: For 9479/10080 co-relation queries the response was YES. [2023-11-29 02:11:47,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24758 conditions, 9784 events. 5350/9784 cut-off events. For 9479/10080 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 69494 event pairs, 3622 based on Foata normal form. 276/9427 useless extension candidates. Maximal degree in co-relation 24674. Up to 6447 conditions per place. [2023-11-29 02:11:47,281 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 108 selfloop transitions, 14 changer transitions 2/145 dead transitions. [2023-11-29 02:11:47,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 145 transitions, 950 flow [2023-11-29 02:11:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:11:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:11:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2023-11-29 02:11:47,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2023-11-29 02:11:47,283 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 228 transitions. [2023-11-29 02:11:47,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 228 transitions. [2023-11-29 02:11:47,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:47,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 228 transitions. [2023-11-29 02:11:47,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:47,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:47,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:47,285 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 499 flow. Second operand 6 states and 228 transitions. [2023-11-29 02:11:47,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 145 transitions, 950 flow [2023-11-29 02:11:47,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 145 transitions, 935 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 02:11:47,304 INFO L231 Difference]: Finished difference. Result has 113 places, 102 transitions, 535 flow [2023-11-29 02:11:47,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=113, PETRI_TRANSITIONS=102} [2023-11-29 02:11:47,305 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 56 predicate places. [2023-11-29 02:11:47,305 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 102 transitions, 535 flow [2023-11-29 02:11:47,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 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 02:11:47,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:47,306 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-29 02:11:47,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:11:47,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:47,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1085772828, now seen corresponding path program 1 times [2023-11-29 02:11:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449203577] [2023-11-29 02:11:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 02:11:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449203577] [2023-11-29 02:11:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449203577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:11:47,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797198679] [2023-11-29 02:11:47,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:11:47,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:47,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:11:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:11:47,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2023-11-29 02:11:47,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 102 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:47,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:47,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2023-11-29 02:11:47,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:48,221 INFO L124 PetriNetUnfolderBase]: 4008/7186 cut-off events. [2023-11-29 02:11:48,221 INFO L125 PetriNetUnfolderBase]: For 6636/7400 co-relation queries the response was YES. [2023-11-29 02:11:48,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19319 conditions, 7186 events. 4008/7186 cut-off events. For 6636/7400 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 49371 event pairs, 2871 based on Foata normal form. 227/7077 useless extension candidates. Maximal degree in co-relation 19264. Up to 5467 conditions per place. [2023-11-29 02:11:48,268 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 68 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2023-11-29 02:11:48,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 681 flow [2023-11-29 02:11:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2023-11-29 02:11:48,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-29 02:11:48,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 145 transitions. [2023-11-29 02:11:48,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 145 transitions. [2023-11-29 02:11:48,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:48,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 145 transitions. [2023-11-29 02:11:48,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:48,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:48,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 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 02:11:48,272 INFO L175 Difference]: Start difference. First operand has 113 places, 102 transitions, 535 flow. Second operand 4 states and 145 transitions. [2023-11-29 02:11:48,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 681 flow [2023-11-29 02:11:48,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 101 transitions, 661 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:11:48,291 INFO L231 Difference]: Finished difference. Result has 114 places, 101 transitions, 529 flow [2023-11-29 02:11:48,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=114, PETRI_TRANSITIONS=101} [2023-11-29 02:11:48,292 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2023-11-29 02:11:48,292 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 101 transitions, 529 flow [2023-11-29 02:11:48,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:48,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:48,292 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:48,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:11:48,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:48,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash 59029039, now seen corresponding path program 1 times [2023-11-29 02:11:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:48,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455450193] [2023-11-29 02:11:48,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:48,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:11:48,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:48,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455450193] [2023-11-29 02:11:48,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455450193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:48,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990959110] [2023-11-29 02:11:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:48,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:48,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:48,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:48,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:11:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:11:48,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 02:11:48,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 02:11:48,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990959110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:48,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:48,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-11-29 02:11:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984348812] [2023-11-29 02:11:48,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:48,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 02:11:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 02:11:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:11:48,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 58 [2023-11-29 02:11:48,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 101 transitions, 529 flow. Second operand has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 0 states have call successors, (0), 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 02:11:48,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:48,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 58 [2023-11-29 02:11:48,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:50,609 INFO L124 PetriNetUnfolderBase]: 7789/14006 cut-off events. [2023-11-29 02:11:50,609 INFO L125 PetriNetUnfolderBase]: For 12741/14363 co-relation queries the response was YES. [2023-11-29 02:11:50,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36697 conditions, 14006 events. 7789/14006 cut-off events. For 12741/14363 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 107062 event pairs, 5424 based on Foata normal form. 459/13756 useless extension candidates. Maximal degree in co-relation 36640. Up to 5442 conditions per place. [2023-11-29 02:11:50,705 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 83 selfloop transitions, 38 changer transitions 0/142 dead transitions. [2023-11-29 02:11:50,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 142 transitions, 956 flow [2023-11-29 02:11:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:11:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 02:11:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 346 transitions. [2023-11-29 02:11:50,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49712643678160917 [2023-11-29 02:11:50,707 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 346 transitions. [2023-11-29 02:11:50,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 346 transitions. [2023-11-29 02:11:50,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:50,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 346 transitions. [2023-11-29 02:11:50,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 28.833333333333332) internal successors, (346), 12 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 02:11:50,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 58.0) internal successors, (754), 13 states have internal predecessors, (754), 0 states have call successors, (0), 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 02:11:50,711 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 58.0) internal successors, (754), 13 states have internal predecessors, (754), 0 states have call successors, (0), 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 02:11:50,712 INFO L175 Difference]: Start difference. First operand has 114 places, 101 transitions, 529 flow. Second operand 12 states and 346 transitions. [2023-11-29 02:11:50,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 142 transitions, 956 flow [2023-11-29 02:11:50,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 142 transitions, 930 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:11:50,752 INFO L231 Difference]: Finished difference. Result has 122 places, 105 transitions, 611 flow [2023-11-29 02:11:50,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=122, PETRI_TRANSITIONS=105} [2023-11-29 02:11:50,753 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 65 predicate places. [2023-11-29 02:11:50,753 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 105 transitions, 611 flow [2023-11-29 02:11:50,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 0 states have call successors, (0), 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 02:11:50,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:50,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:50,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:11:50,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:11:50,954 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:50,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:50,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1440521197, now seen corresponding path program 1 times [2023-11-29 02:11:50,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:50,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563022306] [2023-11-29 02:11:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:50,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:11:51,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563022306] [2023-11-29 02:11:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563022306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:51,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:51,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:11:51,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350584190] [2023-11-29 02:11:51,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:51,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:11:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:11:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:11:51,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 58 [2023-11-29 02:11:51,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 105 transitions, 611 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 02:11:51,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:51,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 58 [2023-11-29 02:11:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:52,810 INFO L124 PetriNetUnfolderBase]: 9551/16114 cut-off events. [2023-11-29 02:11:52,810 INFO L125 PetriNetUnfolderBase]: For 15733/17717 co-relation queries the response was YES. [2023-11-29 02:11:52,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42575 conditions, 16114 events. 9551/16114 cut-off events. For 15733/17717 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 116217 event pairs, 6546 based on Foata normal form. 520/15044 useless extension candidates. Maximal degree in co-relation 42515. Up to 12276 conditions per place. [2023-11-29 02:11:52,948 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 67 selfloop transitions, 9 changer transitions 29/126 dead transitions. [2023-11-29 02:11:52,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 895 flow [2023-11-29 02:11:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:11:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:11:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-29 02:11:52,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6293103448275862 [2023-11-29 02:11:52,951 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-29 02:11:52,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-29 02:11:52,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:52,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-29 02:11:52,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 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 02:11:52,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:52,954 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 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 02:11:52,954 INFO L175 Difference]: Start difference. First operand has 122 places, 105 transitions, 611 flow. Second operand 6 states and 219 transitions. [2023-11-29 02:11:52,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 895 flow [2023-11-29 02:11:53,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 126 transitions, 851 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:53,017 INFO L231 Difference]: Finished difference. Result has 124 places, 97 transitions, 524 flow [2023-11-29 02:11:53,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=524, PETRI_PLACES=124, PETRI_TRANSITIONS=97} [2023-11-29 02:11:53,017 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2023-11-29 02:11:53,018 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 97 transitions, 524 flow [2023-11-29 02:11:53,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 02:11:53,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:53,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:53,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:11:53,018 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:53,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1828431073, now seen corresponding path program 1 times [2023-11-29 02:11:53,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:53,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120145007] [2023-11-29 02:11:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:53,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:53,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:53,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120145007] [2023-11-29 02:11:53,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120145007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:53,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386969122] [2023-11-29 02:11:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:53,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:53,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:53,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:11:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:53,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:11:53,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:53,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:53,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386969122] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:53,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-29 02:11:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844373807] [2023-11-29 02:11:53,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:53,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 02:11:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 02:11:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:11:53,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2023-11-29 02:11:53,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 97 transitions, 524 flow. Second operand has 19 states, 19 states have (on average 21.526315789473685) internal successors, (409), 19 states have internal predecessors, (409), 0 states have call successors, (0), 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 02:11:53,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:53,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2023-11-29 02:11:53,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:56,016 INFO L124 PetriNetUnfolderBase]: 10995/18308 cut-off events. [2023-11-29 02:11:56,016 INFO L125 PetriNetUnfolderBase]: For 17765/18727 co-relation queries the response was YES. [2023-11-29 02:11:56,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49785 conditions, 18308 events. 10995/18308 cut-off events. For 17765/18727 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 132866 event pairs, 1831 based on Foata normal form. 668/17845 useless extension candidates. Maximal degree in co-relation 49724. Up to 2504 conditions per place. [2023-11-29 02:11:56,157 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 258 selfloop transitions, 44 changer transitions 0/318 dead transitions. [2023-11-29 02:11:56,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 318 transitions, 2103 flow [2023-11-29 02:11:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:11:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 02:11:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 492 transitions. [2023-11-29 02:11:56,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49898580121703856 [2023-11-29 02:11:56,160 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 492 transitions. [2023-11-29 02:11:56,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 492 transitions. [2023-11-29 02:11:56,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:56,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 492 transitions. [2023-11-29 02:11:56,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 28.941176470588236) internal successors, (492), 17 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:56,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 58.0) internal successors, (1044), 18 states have internal predecessors, (1044), 0 states have call successors, (0), 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 02:11:56,165 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 58.0) internal successors, (1044), 18 states have internal predecessors, (1044), 0 states have call successors, (0), 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 02:11:56,165 INFO L175 Difference]: Start difference. First operand has 124 places, 97 transitions, 524 flow. Second operand 17 states and 492 transitions. [2023-11-29 02:11:56,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 318 transitions, 2103 flow [2023-11-29 02:11:56,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 318 transitions, 1997 flow, removed 44 selfloop flow, removed 8 redundant places. [2023-11-29 02:11:56,258 INFO L231 Difference]: Finished difference. Result has 124 places, 101 transitions, 600 flow [2023-11-29 02:11:56,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=600, PETRI_PLACES=124, PETRI_TRANSITIONS=101} [2023-11-29 02:11:56,259 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2023-11-29 02:11:56,259 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 101 transitions, 600 flow [2023-11-29 02:11:56,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.526315789473685) internal successors, (409), 19 states have internal predecessors, (409), 0 states have call successors, (0), 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 02:11:56,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:56,259 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2023-11-29 02:11:56,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:11:56,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:11:56,460 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:56,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:56,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1091893052, now seen corresponding path program 2 times [2023-11-29 02:11:56,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:56,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202675301] [2023-11-29 02:11:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:56,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202675301] [2023-11-29 02:11:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202675301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539921881] [2023-11-29 02:11:56,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:11:56,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:56,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:56,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:56,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:11:56,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:11:56,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:56,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:11:56,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 02:11:56,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 02:11:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539921881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:56,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:56,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2023-11-29 02:11:56,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241189724] [2023-11-29 02:11:56,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:56,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 02:11:56,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 02:11:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:11:57,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 58 [2023-11-29 02:11:57,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 101 transitions, 600 flow. Second operand has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:57,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:57,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 58 [2023-11-29 02:11:57,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:58,490 INFO L124 PetriNetUnfolderBase]: 7006/12858 cut-off events. [2023-11-29 02:11:58,490 INFO L125 PetriNetUnfolderBase]: For 13498/14004 co-relation queries the response was YES. [2023-11-29 02:11:58,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34729 conditions, 12858 events. 7006/12858 cut-off events. For 13498/14004 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 100657 event pairs, 5118 based on Foata normal form. 181/12231 useless extension candidates. Maximal degree in co-relation 34676. Up to 9398 conditions per place. [2023-11-29 02:11:58,600 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 41 selfloop transitions, 44 changer transitions 0/106 dead transitions. [2023-11-29 02:11:58,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 106 transitions, 807 flow [2023-11-29 02:11:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 02:11:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 02:11:58,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 493 transitions. [2023-11-29 02:11:58,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2023-11-29 02:11:58,603 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 493 transitions. [2023-11-29 02:11:58,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 493 transitions. [2023-11-29 02:11:58,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:58,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 493 transitions. [2023-11-29 02:11:58,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 25.94736842105263) internal successors, (493), 19 states have internal predecessors, (493), 0 states have call successors, (0), 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 02:11:58,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 58.0) internal successors, (1160), 20 states have internal predecessors, (1160), 0 states have call successors, (0), 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 02:11:58,607 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 58.0) internal successors, (1160), 20 states have internal predecessors, (1160), 0 states have call successors, (0), 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 02:11:58,607 INFO L175 Difference]: Start difference. First operand has 124 places, 101 transitions, 600 flow. Second operand 19 states and 493 transitions. [2023-11-29 02:11:58,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 106 transitions, 807 flow [2023-11-29 02:11:58,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 106 transitions, 692 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-11-29 02:11:58,636 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 610 flow [2023-11-29 02:11:58,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=610, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2023-11-29 02:11:58,637 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 69 predicate places. [2023-11-29 02:11:58,637 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 610 flow [2023-11-29 02:11:58,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:58,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:58,638 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:58,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:11:58,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:11:58,839 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:11:58,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1242390738, now seen corresponding path program 2 times [2023-11-29 02:11:58,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:58,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264865593] [2023-11-29 02:11:58,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 02:11:59,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:59,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264865593] [2023-11-29 02:11:59,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264865593] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:59,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837365561] [2023-11-29 02:11:59,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:11:59,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:59,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:59,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:11:59,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:11:59,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:59,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:11:59,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:11:59,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:11:59,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837365561] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:59,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:59,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-11-29 02:11:59,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244479169] [2023-11-29 02:11:59,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:59,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:11:59,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:59,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:11:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:11:59,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2023-11-29 02:11:59,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 610 flow. Second operand has 11 states, 11 states have (on average 23.545454545454547) internal successors, (259), 11 states have internal predecessors, (259), 0 states have call successors, (0), 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 02:11:59,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:59,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2023-11-29 02:11:59,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:00,453 INFO L124 PetriNetUnfolderBase]: 5301/9256 cut-off events. [2023-11-29 02:12:00,454 INFO L125 PetriNetUnfolderBase]: For 7269/7687 co-relation queries the response was YES. [2023-11-29 02:12:00,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23141 conditions, 9256 events. 5301/9256 cut-off events. For 7269/7687 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 64165 event pairs, 2089 based on Foata normal form. 297/9046 useless extension candidates. Maximal degree in co-relation 23093. Up to 3554 conditions per place. [2023-11-29 02:12:00,516 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 128 selfloop transitions, 35 changer transitions 4/187 dead transitions. [2023-11-29 02:12:00,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 187 transitions, 1201 flow [2023-11-29 02:12:00,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:12:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 02:12:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 413 transitions. [2023-11-29 02:12:00,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2023-11-29 02:12:00,518 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 413 transitions. [2023-11-29 02:12:00,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 413 transitions. [2023-11-29 02:12:00,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:00,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 413 transitions. [2023-11-29 02:12:00,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 29.5) internal successors, (413), 14 states have internal predecessors, (413), 0 states have call successors, (0), 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 02:12:00,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 58.0) internal successors, (870), 15 states have internal predecessors, (870), 0 states have call successors, (0), 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 02:12:00,522 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 58.0) internal successors, (870), 15 states have internal predecessors, (870), 0 states have call successors, (0), 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 02:12:00,522 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 610 flow. Second operand 14 states and 413 transitions. [2023-11-29 02:12:00,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 187 transitions, 1201 flow [2023-11-29 02:12:00,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 187 transitions, 1100 flow, removed 1 selfloop flow, removed 14 redundant places. [2023-11-29 02:12:00,542 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 605 flow [2023-11-29 02:12:00,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=605, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2023-11-29 02:12:00,543 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 70 predicate places. [2023-11-29 02:12:00,543 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 605 flow [2023-11-29 02:12:00,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.545454545454547) internal successors, (259), 11 states have internal predecessors, (259), 0 states have call successors, (0), 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 02:12:00,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:00,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:00,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:00,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:12:00,744 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:12:00,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:00,744 INFO L85 PathProgramCache]: Analyzing trace with hash -836578839, now seen corresponding path program 1 times [2023-11-29 02:12:00,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:00,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415818439] [2023-11-29 02:12:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:00,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:12:00,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415818439] [2023-11-29 02:12:00,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415818439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589742948] [2023-11-29 02:12:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:00,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:00,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:00,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:00,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:12:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:00,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:12:00,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:12:01,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:12:01,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589742948] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:01,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:01,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-29 02:12:01,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325108504] [2023-11-29 02:12:01,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:01,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 02:12:01,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:01,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 02:12:01,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:12:01,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2023-11-29 02:12:01,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 605 flow. Second operand has 19 states, 19 states have (on average 21.736842105263158) internal successors, (413), 19 states have internal predecessors, (413), 0 states have call successors, (0), 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 02:12:01,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:01,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2023-11-29 02:12:01,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:02,992 INFO L124 PetriNetUnfolderBase]: 8190/13450 cut-off events. [2023-11-29 02:12:02,992 INFO L125 PetriNetUnfolderBase]: For 14931/15195 co-relation queries the response was YES. [2023-11-29 02:12:03,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36382 conditions, 13450 events. 8190/13450 cut-off events. For 14931/15195 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 88808 event pairs, 755 based on Foata normal form. 186/12521 useless extension candidates. Maximal degree in co-relation 36339. Up to 2268 conditions per place. [2023-11-29 02:12:03,076 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 199 selfloop transitions, 37 changer transitions 96/346 dead transitions. [2023-11-29 02:12:03,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 346 transitions, 2369 flow [2023-11-29 02:12:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 02:12:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 02:12:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 555 transitions. [2023-11-29 02:12:03,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036297640653358 [2023-11-29 02:12:03,078 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 555 transitions. [2023-11-29 02:12:03,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 555 transitions. [2023-11-29 02:12:03,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:03,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 555 transitions. [2023-11-29 02:12:03,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 29.210526315789473) internal successors, (555), 19 states have internal predecessors, (555), 0 states have call successors, (0), 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 02:12:03,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 58.0) internal successors, (1160), 20 states have internal predecessors, (1160), 0 states have call successors, (0), 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 02:12:03,083 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 58.0) internal successors, (1160), 20 states have internal predecessors, (1160), 0 states have call successors, (0), 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 02:12:03,083 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 605 flow. Second operand 19 states and 555 transitions. [2023-11-29 02:12:03,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 346 transitions, 2369 flow [2023-11-29 02:12:03,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 346 transitions, 2339 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 02:12:03,122 INFO L231 Difference]: Finished difference. Result has 138 places, 94 transitions, 543 flow [2023-11-29 02:12:03,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=543, PETRI_PLACES=138, PETRI_TRANSITIONS=94} [2023-11-29 02:12:03,123 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2023-11-29 02:12:03,123 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 94 transitions, 543 flow [2023-11-29 02:12:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.736842105263158) internal successors, (413), 19 states have internal predecessors, (413), 0 states have call successors, (0), 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 02:12:03,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:03,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:03,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:12:03,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:12:03,324 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:12:03,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1243344533, now seen corresponding path program 1 times [2023-11-29 02:12:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:03,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419127106] [2023-11-29 02:12:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:03,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:12:03,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419127106] [2023-11-29 02:12:03,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419127106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126400446] [2023-11-29 02:12:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:03,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:03,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:03,408 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:12:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:03,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:12:03,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:12:03,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:12:03,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126400446] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:03,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:03,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 02:12:03,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141175116] [2023-11-29 02:12:03,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:03,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:12:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:12:03,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:12:03,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 58 [2023-11-29 02:12:03,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 94 transitions, 543 flow. Second operand has 12 states, 12 states have (on average 26.333333333333332) internal successors, (316), 12 states have internal predecessors, (316), 0 states have call successors, (0), 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 02:12:03,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:03,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 58 [2023-11-29 02:12:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:05,758 INFO L124 PetriNetUnfolderBase]: 11467/19334 cut-off events. [2023-11-29 02:12:05,759 INFO L125 PetriNetUnfolderBase]: For 25861/26221 co-relation queries the response was YES. [2023-11-29 02:12:05,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54961 conditions, 19334 events. 11467/19334 cut-off events. For 25861/26221 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 138775 event pairs, 3019 based on Foata normal form. 618/19569 useless extension candidates. Maximal degree in co-relation 54913. Up to 6132 conditions per place. [2023-11-29 02:12:05,926 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 295 selfloop transitions, 13 changer transitions 0/323 dead transitions. [2023-11-29 02:12:05,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 323 transitions, 2297 flow [2023-11-29 02:12:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:12:05,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:12:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 394 transitions. [2023-11-29 02:12:05,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6793103448275862 [2023-11-29 02:12:05,928 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 394 transitions. [2023-11-29 02:12:05,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 394 transitions. [2023-11-29 02:12:05,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:05,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 394 transitions. [2023-11-29 02:12:05,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 39.4) internal successors, (394), 10 states have internal predecessors, (394), 0 states have call successors, (0), 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 02:12:05,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 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 02:12:05,930 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 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 02:12:05,930 INFO L175 Difference]: Start difference. First operand has 138 places, 94 transitions, 543 flow. Second operand 10 states and 394 transitions. [2023-11-29 02:12:05,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 323 transitions, 2297 flow [2023-11-29 02:12:05,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 323 transitions, 1922 flow, removed 30 selfloop flow, removed 16 redundant places. [2023-11-29 02:12:05,973 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 494 flow [2023-11-29 02:12:05,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=494, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2023-11-29 02:12:05,974 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 59 predicate places. [2023-11-29 02:12:05,974 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 494 flow [2023-11-29 02:12:05,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.333333333333332) internal successors, (316), 12 states have internal predecessors, (316), 0 states have call successors, (0), 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 02:12:05,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:05,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:05,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:12:06,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:06,175 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:12:06,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1362025850, now seen corresponding path program 1 times [2023-11-29 02:12:06,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:06,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786129859] [2023-11-29 02:12:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:12:06,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786129859] [2023-11-29 02:12:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786129859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080689454] [2023-11-29 02:12:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:06,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:06,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:06,261 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:06,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:12:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:06,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:12:06,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:12:06,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:12:06,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080689454] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:06,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:06,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 02:12:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858691942] [2023-11-29 02:12:06,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:06,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:12:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:12:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:12:06,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 58 [2023-11-29 02:12:06,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 0 states have call successors, (0), 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 02:12:06,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:06,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 58 [2023-11-29 02:12:06,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:10,856 INFO L124 PetriNetUnfolderBase]: 24773/41167 cut-off events. [2023-11-29 02:12:10,856 INFO L125 PetriNetUnfolderBase]: For 44774/45868 co-relation queries the response was YES. [2023-11-29 02:12:10,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107264 conditions, 41167 events. 24773/41167 cut-off events. For 44774/45868 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 314517 event pairs, 4959 based on Foata normal form. 1026/37333 useless extension candidates. Maximal degree in co-relation 107226. Up to 9368 conditions per place. [2023-11-29 02:12:11,100 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 353 selfloop transitions, 9 changer transitions 0/380 dead transitions. [2023-11-29 02:12:11,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 380 transitions, 2516 flow [2023-11-29 02:12:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:12:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:12:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 394 transitions. [2023-11-29 02:12:11,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6793103448275862 [2023-11-29 02:12:11,102 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 394 transitions. [2023-11-29 02:12:11,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 394 transitions. [2023-11-29 02:12:11,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:11,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 394 transitions. [2023-11-29 02:12:11,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 39.4) internal successors, (394), 10 states have internal predecessors, (394), 0 states have call successors, (0), 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 02:12:11,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 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 02:12:11,104 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 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 02:12:11,104 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 494 flow. Second operand 10 states and 394 transitions. [2023-11-29 02:12:11,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 380 transitions, 2516 flow [2023-11-29 02:12:11,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 380 transitions, 2433 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-11-29 02:12:11,138 INFO L231 Difference]: Finished difference. Result has 126 places, 109 transitions, 547 flow [2023-11-29 02:12:11,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=547, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2023-11-29 02:12:11,138 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 69 predicate places. [2023-11-29 02:12:11,138 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 547 flow [2023-11-29 02:12:11,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 0 states have call successors, (0), 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 02:12:11,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:11,139 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:11,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:12:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-29 02:12:11,339 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:12:11,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1422319548, now seen corresponding path program 2 times [2023-11-29 02:12:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:11,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445404249] [2023-11-29 02:12:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:11,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 02:12:11,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445404249] [2023-11-29 02:12:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445404249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049500984] [2023-11-29 02:12:11,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:12:11,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:11,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:11,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:11,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:12:11,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:12:11,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:11,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:12:11,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 02:12:11,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 02:12:11,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049500984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:11,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:11,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-29 02:12:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580118802] [2023-11-29 02:12:11,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:11,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:12:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:12:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:12:11,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2023-11-29 02:12:11,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 547 flow. Second operand has 13 states, 13 states have (on average 22.076923076923077) internal successors, (287), 13 states have internal predecessors, (287), 0 states have call successors, (0), 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 02:12:11,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:11,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2023-11-29 02:12:11,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:21,203 INFO L124 PetriNetUnfolderBase]: 58976/95117 cut-off events. [2023-11-29 02:12:21,203 INFO L125 PetriNetUnfolderBase]: For 121211/123725 co-relation queries the response was YES. [2023-11-29 02:12:21,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262354 conditions, 95117 events. 58976/95117 cut-off events. For 121211/123725 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 783440 event pairs, 9766 based on Foata normal form. 880/85724 useless extension candidates. Maximal degree in co-relation 262312. Up to 18128 conditions per place. [2023-11-29 02:12:21,777 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 288 selfloop transitions, 52 changer transitions 18/375 dead transitions. [2023-11-29 02:12:21,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 375 transitions, 2486 flow [2023-11-29 02:12:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:12:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 02:12:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 575 transitions. [2023-11-29 02:12:21,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720853858784893 [2023-11-29 02:12:21,779 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 575 transitions. [2023-11-29 02:12:21,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 575 transitions. [2023-11-29 02:12:21,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:21,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 575 transitions. [2023-11-29 02:12:21,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 27.38095238095238) internal successors, (575), 21 states have internal predecessors, (575), 0 states have call successors, (0), 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 02:12:21,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 58.0) internal successors, (1276), 22 states have internal predecessors, (1276), 0 states have call successors, (0), 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 02:12:21,782 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 58.0) internal successors, (1276), 22 states have internal predecessors, (1276), 0 states have call successors, (0), 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 02:12:21,783 INFO L175 Difference]: Start difference. First operand has 126 places, 109 transitions, 547 flow. Second operand 21 states and 575 transitions. [2023-11-29 02:12:21,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 375 transitions, 2486 flow [2023-11-29 02:12:22,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 375 transitions, 2392 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-29 02:12:22,295 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 735 flow [2023-11-29 02:12:22,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=735, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2023-11-29 02:12:22,296 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 84 predicate places. [2023-11-29 02:12:22,296 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 735 flow [2023-11-29 02:12:22,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.076923076923077) internal successors, (287), 13 states have internal predecessors, (287), 0 states have call successors, (0), 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 02:12:22,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:22,296 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:22,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:12:22,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 02:12:22,497 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 02:12:22,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1446970557, now seen corresponding path program 2 times [2023-11-29 02:12:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847123522] [2023-11-29 02:12:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:22,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 02:12:22,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:22,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847123522] [2023-11-29 02:12:22,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847123522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:22,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681939886] [2023-11-29 02:12:22,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:12:22,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:22,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:22,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:12:22,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:12:22,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:22,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:12:22,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-29 02:12:22,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-29 02:12:23,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681939886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:12:23,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:12:23,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-29 02:12:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709750156] [2023-11-29 02:12:23,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:12:23,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:12:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:23,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:12:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:12:23,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2023-11-29 02:12:23,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 735 flow. Second operand has 13 states, 13 states have (on average 22.384615384615383) internal successors, (291), 13 states have internal predecessors, (291), 0 states have call successors, (0), 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 02:12:23,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:23,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2023-11-29 02:12:23,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:31,175 INFO L124 PetriNetUnfolderBase]: 47849/81900 cut-off events. [2023-11-29 02:12:31,175 INFO L125 PetriNetUnfolderBase]: For 141429/144715 co-relation queries the response was YES. [2023-11-29 02:12:31,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218714 conditions, 81900 events. 47849/81900 cut-off events. For 141429/144715 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 712759 event pairs, 4430 based on Foata normal form. 2343/74811 useless extension candidates. Maximal degree in co-relation 218673. Up to 16328 conditions per place. [2023-11-29 02:12:31,446 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 0 selfloop transitions, 0 changer transitions 398/398 dead transitions. [2023-11-29 02:12:31,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 398 transitions, 2847 flow [2023-11-29 02:12:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:12:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 02:12:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 570 transitions. [2023-11-29 02:12:31,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46798029556650245 [2023-11-29 02:12:31,449 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 570 transitions. [2023-11-29 02:12:31,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 570 transitions. [2023-11-29 02:12:31,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:31,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 570 transitions. [2023-11-29 02:12:31,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 27.142857142857142) internal successors, (570), 21 states have internal predecessors, (570), 0 states have call successors, (0), 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 02:12:31,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 58.0) internal successors, (1276), 22 states have internal predecessors, (1276), 0 states have call successors, (0), 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 02:12:31,454 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 58.0) internal successors, (1276), 22 states have internal predecessors, (1276), 0 states have call successors, (0), 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 02:12:31,454 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 735 flow. Second operand 21 states and 570 transitions. [2023-11-29 02:12:31,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 398 transitions, 2847 flow [2023-11-29 02:12:31,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 398 transitions, 2792 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-11-29 02:12:31,923 INFO L231 Difference]: Finished difference. Result has 142 places, 0 transitions, 0 flow [2023-11-29 02:12:31,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=0, PETRI_PLACES=142, PETRI_TRANSITIONS=0} [2023-11-29 02:12:31,923 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 85 predicate places. [2023-11-29 02:12:31,923 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 0 transitions, 0 flow [2023-11-29 02:12:31,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.384615384615383) internal successors, (291), 13 states have internal predecessors, (291), 0 states have call successors, (0), 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 02:12:31,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-11-29 02:12:31,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-29 02:12:31,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-29 02:12:31,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-29 02:12:31,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-29 02:12:31,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:12:32,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:32,127 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:32,132 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 02:12:32,133 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:12:32,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:12:32 BasicIcfg [2023-11-29 02:12:32,138 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:12:32,138 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:12:32,138 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:12:32,138 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:12:32,139 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:11:36" (3/4) ... [2023-11-29 02:12:32,140 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 02:12:32,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 02:12:32,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 02:12:32,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 02:12:32,148 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2023-11-29 02:12:32,148 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-11-29 02:12:32,149 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 02:12:32,149 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 02:12:32,225 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:12:32,226 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 02:12:32,226 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:12:32,227 INFO L158 Benchmark]: Toolchain (without parser) took 56518.95ms. Allocated memory was 167.8MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 119.8MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-11-29 02:12:32,227 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:12:32,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.97ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 107.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 02:12:32,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.12ms. Allocated memory is still 167.8MB. Free memory was 107.9MB in the beginning and 105.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:12:32,229 INFO L158 Benchmark]: Boogie Preprocessor took 56.53ms. Allocated memory is still 167.8MB. Free memory was 105.9MB in the beginning and 103.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:12:32,229 INFO L158 Benchmark]: RCFGBuilder took 758.77ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 103.1MB in the beginning and 155.2MB in the end (delta: -52.1MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2023-11-29 02:12:32,229 INFO L158 Benchmark]: TraceAbstraction took 55286.65ms. Allocated memory was 211.8MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 154.2MB in the beginning and 3.7GB in the end (delta: -3.5GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2023-11-29 02:12:32,230 INFO L158 Benchmark]: Witness Printer took 88.38ms. Allocated memory is still 6.0GB. Free memory was 3.7GB in the beginning and 3.7GB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 02:12:32,232 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.97ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 107.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.12ms. Allocated memory is still 167.8MB. Free memory was 107.9MB in the beginning and 105.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.53ms. Allocated memory is still 167.8MB. Free memory was 105.9MB in the beginning and 103.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 758.77ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 103.1MB in the beginning and 155.2MB in the end (delta: -52.1MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * TraceAbstraction took 55286.65ms. Allocated memory was 211.8MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 154.2MB in the beginning and 3.7GB in the end (delta: -3.5GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 88.38ms. Allocated memory is still 6.0GB. Free memory was 3.7GB in the beginning and 3.7GB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 85 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 55.2s, OverallIterations: 22, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 45.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2647 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2477 mSDsluCounter, 2212 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2174 mSDsCounter, 260 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9723 IncrementalHoareTripleChecker+Invalid, 9983 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 260 mSolverCounterUnsat, 38 mSDtfsCounter, 9723 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 936 GetRequests, 612 SyntacticMatches, 10 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=735occurred in iteration=21, InterpolantAutomatonStates: 237, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 840 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1136 ConstructedInterpolants, 0 QuantifiedInterpolants, 3204 SizeOfPredicates, 48 NumberOfNonLiveVariables, 2343 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 48 InterpolantComputations, 10 PerfectInterpolantSequences, 834/1180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 02:12:32,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab92486-7ae6-4c81-87a4-d266bc66b2d0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE