./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.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_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/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_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/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_2772b393-f056-473e-8f2e-570d07487c11/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 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:07:42,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:07:42,624 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:07:42,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:07:42,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:07:42,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:07:42,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:07:42,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:07:42,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:07:42,655 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:07:42,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:07:42,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:07:42,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:07:42,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:07:42,657 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:07:42,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:07:42,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:07:42,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:07:42,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:07:42,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:07:42,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:07:42,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:07:42,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:07:42,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:07:42,662 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:07:42,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:07:42,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:07:42,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:07:42,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:07:42,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:07:42,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:07:42,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:07:42,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:07:42,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:07:42,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:07:42,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:07:42,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:07:42,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:07:42,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:07:42,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:07:42,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:07:42,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:07:42,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:07:42,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:07:42,668 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_2772b393-f056-473e-8f2e-570d07487c11/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a [2023-11-29 03:07:42,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:07:42,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:07:42,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:07:42,942 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:07:42,943 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:07:42,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-29 03:07:45,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:07:45,863 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:07:45,864 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-29 03:07:45,872 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/data/fbb5766a9/73be4757bdf24f278a40b2926708ddf8/FLAG204b06700 [2023-11-29 03:07:45,887 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/data/fbb5766a9/73be4757bdf24f278a40b2926708ddf8 [2023-11-29 03:07:45,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:07:45,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:07:45,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:07:45,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:07:45,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:07:45,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:07:45" (1/1) ... [2023-11-29 03:07:45,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1260d214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:45, skipping insertion in model container [2023-11-29 03:07:45,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:07:45" (1/1) ... [2023-11-29 03:07:45,939 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:07:46,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:07:46,137 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:07:46,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:07:46,176 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:07:46,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46 WrapperNode [2023-11-29 03:07:46,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:07:46,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:07:46,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:07:46,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:07:46,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,217 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 109 [2023-11-29 03:07:46,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:07:46,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:07:46,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:07:46,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:07:46,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,248 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 4, 2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 03:07:46,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:07:46,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:07:46,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:07:46,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:07:46,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (1/1) ... [2023-11-29 03:07:46,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:07:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:46,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:07:46,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:07:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:07:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:07:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:07:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:07:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:07:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:07:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:07:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:07:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:07:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:07:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:07:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:07:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:07:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:07:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:07:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:07:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:07:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:07:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:07:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:07:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:07:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:07:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:07:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:07:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:07:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:07:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:07:46,338 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:07:46,460 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:07:46,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:07:46,707 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:07:46,911 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:07:46,911 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 03:07:46,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:07:46 BoogieIcfgContainer [2023-11-29 03:07:46,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:07:46,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:07:46,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:07:46,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:07:46,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:07:45" (1/3) ... [2023-11-29 03:07:46,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10016689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:07:46, skipping insertion in model container [2023-11-29 03:07:46,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:46" (2/3) ... [2023-11-29 03:07:46,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10016689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:07:46, skipping insertion in model container [2023-11-29 03:07:46,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:07:46" (3/3) ... [2023-11-29 03:07:46,919 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-11-29 03:07:46,926 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:07:46,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:07:46,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 03:07:46,934 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:07:46,984 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 03:07:47,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions, 107 flow [2023-11-29 03:07:47,039 INFO L124 PetriNetUnfolderBase]: 4/40 cut-off events. [2023-11-29 03:07:47,039 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 03:07:47,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 4/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 03:07:47,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 43 transitions, 107 flow [2023-11-29 03:07:47,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 38 transitions, 91 flow [2023-11-29 03:07:47,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:07:47,066 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;@72b8f2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:07:47,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 03:07:47,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:07:47,071 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 03:07:47,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:07:47,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:47,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 03:07:47,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:47,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash 437078, now seen corresponding path program 1 times [2023-11-29 03:07:47,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:47,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105913121] [2023-11-29 03:07:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:47,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105913121] [2023-11-29 03:07:47,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105913121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:47,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:47,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:07:47,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402445930] [2023-11-29 03:07:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:47,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:07:47,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:47,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:07:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:07:47,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:47,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:47,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:47,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:47,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:47,631 INFO L124 PetriNetUnfolderBase]: 467/813 cut-off events. [2023-11-29 03:07:47,631 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-29 03:07:47,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 813 events. 467/813 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3572 event pairs, 333 based on Foata normal form. 1/630 useless extension candidates. Maximal degree in co-relation 1289. Up to 681 conditions per place. [2023-11-29 03:07:47,642 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 27 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-11-29 03:07:47,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 159 flow [2023-11-29 03:07:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:07:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:07:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2023-11-29 03:07:47,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941860465116279 [2023-11-29 03:07:47,653 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 85 transitions. [2023-11-29 03:07:47,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 85 transitions. [2023-11-29 03:07:47,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:47,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 85 transitions. [2023-11-29 03:07:47,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:47,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:47,663 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:47,664 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 91 flow. Second operand 4 states and 85 transitions. [2023-11-29 03:07:47,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 159 flow [2023-11-29 03:07:47,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 150 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:07:47,671 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 111 flow [2023-11-29 03:07:47,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2023-11-29 03:07:47,677 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-11-29 03:07:47,677 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 111 flow [2023-11-29 03:07:47,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:47,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:47,678 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:07:47,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:07:47,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:47,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash 136505707, now seen corresponding path program 1 times [2023-11-29 03:07:47,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:47,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536066231] [2023-11-29 03:07:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:47,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:47,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:47,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536066231] [2023-11-29 03:07:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536066231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890979748] [2023-11-29 03:07:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:47,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:47,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:07:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:47,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:07:47,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:48,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:48,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890979748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:48,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:07:48,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 03:07:48,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346004223] [2023-11-29 03:07:48,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:48,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:07:48,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:07:48,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:07:48,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:48,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:48,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:48,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:48,220 INFO L124 PetriNetUnfolderBase]: 467/812 cut-off events. [2023-11-29 03:07:48,221 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 03:07:48,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 812 events. 467/812 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3568 event pairs, 333 based on Foata normal form. 1/630 useless extension candidates. Maximal degree in co-relation 1519. Up to 676 conditions per place. [2023-11-29 03:07:48,229 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 23 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-11-29 03:07:48,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 167 flow [2023-11-29 03:07:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:07:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:07:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2023-11-29 03:07:48,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42248062015503873 [2023-11-29 03:07:48,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 109 transitions. [2023-11-29 03:07:48,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 109 transitions. [2023-11-29 03:07:48,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:48,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 109 transitions. [2023-11-29 03:07:48,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,236 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,236 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 111 flow. Second operand 6 states and 109 transitions. [2023-11-29 03:07:48,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 167 flow [2023-11-29 03:07:48,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:07:48,238 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 118 flow [2023-11-29 03:07:48,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-11-29 03:07:48,239 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-11-29 03:07:48,240 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 118 flow [2023-11-29 03:07:48,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:48,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:07:48,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:07:48,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:48,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:48,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash 139244690, now seen corresponding path program 1 times [2023-11-29 03:07:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:48,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615796731] [2023-11-29 03:07:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:48,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:48,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:48,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615796731] [2023-11-29 03:07:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615796731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:48,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:48,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956444205] [2023-11-29 03:07:48,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:48,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:07:48,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:07:48,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:07:48,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:48,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:48,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:48,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:48,780 INFO L124 PetriNetUnfolderBase]: 901/1491 cut-off events. [2023-11-29 03:07:48,780 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 03:07:48,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 1491 events. 901/1491 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7194 event pairs, 493 based on Foata normal form. 42/1187 useless extension candidates. Maximal degree in co-relation 2837. Up to 1003 conditions per place. [2023-11-29 03:07:48,794 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 56 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-29 03:07:48,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 302 flow [2023-11-29 03:07:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:07:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:07:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2023-11-29 03:07:48,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2023-11-29 03:07:48,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2023-11-29 03:07:48,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2023-11-29 03:07:48,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:48,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2023-11-29 03:07:48,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,800 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,800 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 118 flow. Second operand 4 states and 111 transitions. [2023-11-29 03:07:48,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 302 flow [2023-11-29 03:07:48,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 69 transitions, 280 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-29 03:07:48,803 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 125 flow [2023-11-29 03:07:48,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-29 03:07:48,804 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-11-29 03:07:48,804 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 125 flow [2023-11-29 03:07:48,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:48,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 03:07:48,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:07:48,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:48,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:48,806 INFO L85 PathProgramCache]: Analyzing trace with hash -63289959, now seen corresponding path program 1 times [2023-11-29 03:07:48,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:48,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192457861] [2023-11-29 03:07:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:48,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:48,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:48,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192457861] [2023-11-29 03:07:48,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192457861] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:48,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435458095] [2023-11-29 03:07:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:48,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:48,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:48,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:48,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:07:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:48,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:07:49,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:49,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:49,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435458095] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:49,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:49,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 03:07:49,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699131046] [2023-11-29 03:07:49,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:49,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:07:49,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:07:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:07:49,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:49,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 125 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:49,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:49,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:49,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:49,375 INFO L124 PetriNetUnfolderBase]: 708/1272 cut-off events. [2023-11-29 03:07:49,375 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2023-11-29 03:07:49,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2828 conditions, 1272 events. 708/1272 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6687 event pairs, 493 based on Foata normal form. 3/1038 useless extension candidates. Maximal degree in co-relation 2776. Up to 1005 conditions per place. [2023-11-29 03:07:49,386 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 29 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2023-11-29 03:07:49,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 239 flow [2023-11-29 03:07:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:07:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:07:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2023-11-29 03:07:49,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-29 03:07:49,389 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 172 transitions. [2023-11-29 03:07:49,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 172 transitions. [2023-11-29 03:07:49,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:49,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 172 transitions. [2023-11-29 03:07:49,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:49,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:49,393 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:49,393 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 125 flow. Second operand 10 states and 172 transitions. [2023-11-29 03:07:49,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 239 flow [2023-11-29 03:07:49,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:07:49,398 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 196 flow [2023-11-29 03:07:49,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-11-29 03:07:49,399 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2023-11-29 03:07:49,399 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 196 flow [2023-11-29 03:07:49,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:49,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:49,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:49,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:07:49,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:49,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:49,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:49,601 INFO L85 PathProgramCache]: Analyzing trace with hash 656146831, now seen corresponding path program 1 times [2023-11-29 03:07:49,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:49,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320772149] [2023-11-29 03:07:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:49,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320772149] [2023-11-29 03:07:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320772149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952142679] [2023-11-29 03:07:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:07:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:07:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:07:49,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:49,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:49,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:49,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:49,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:49,989 INFO L124 PetriNetUnfolderBase]: 1456/2336 cut-off events. [2023-11-29 03:07:49,989 INFO L125 PetriNetUnfolderBase]: For 703/775 co-relation queries the response was YES. [2023-11-29 03:07:49,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 2336 events. 1456/2336 cut-off events. For 703/775 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12044 event pairs, 765 based on Foata normal form. 68/1954 useless extension candidates. Maximal degree in co-relation 5172. Up to 1556 conditions per place. [2023-11-29 03:07:50,009 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 74 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-11-29 03:07:50,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 460 flow [2023-11-29 03:07:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:07:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:07:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2023-11-29 03:07:50,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2023-11-29 03:07:50,011 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2023-11-29 03:07:50,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2023-11-29 03:07:50,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:50,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2023-11-29 03:07:50,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,013 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 196 flow. Second operand 4 states and 111 transitions. [2023-11-29 03:07:50,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 460 flow [2023-11-29 03:07:50,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 449 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 03:07:50,019 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 214 flow [2023-11-29 03:07:50,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-11-29 03:07:50,020 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2023-11-29 03:07:50,020 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 214 flow [2023-11-29 03:07:50,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:50,021 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:50,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:07:50,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:50,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:50,021 INFO L85 PathProgramCache]: Analyzing trace with hash -699397481, now seen corresponding path program 1 times [2023-11-29 03:07:50,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:50,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587541368] [2023-11-29 03:07:50,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:50,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:50,111 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 03:07:50,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:50,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587541368] [2023-11-29 03:07:50,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587541368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:50,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:50,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:50,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71738932] [2023-11-29 03:07:50,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:50,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:07:50,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:50,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:07:50,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:07:50,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-29 03:07:50,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:50,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-29 03:07:50,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:50,449 INFO L124 PetriNetUnfolderBase]: 1634/2945 cut-off events. [2023-11-29 03:07:50,449 INFO L125 PetriNetUnfolderBase]: For 1677/1711 co-relation queries the response was YES. [2023-11-29 03:07:50,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 2945 events. 1634/2945 cut-off events. For 1677/1711 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18172 event pairs, 1006 based on Foata normal form. 62/2614 useless extension candidates. Maximal degree in co-relation 7306. Up to 1553 conditions per place. [2023-11-29 03:07:50,469 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 78 selfloop transitions, 5 changer transitions 0/94 dead transitions. [2023-11-29 03:07:50,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 94 transitions, 509 flow [2023-11-29 03:07:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:07:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:07:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2023-11-29 03:07:50,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2023-11-29 03:07:50,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 138 transitions. [2023-11-29 03:07:50,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 138 transitions. [2023-11-29 03:07:50,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:50,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 138 transitions. [2023-11-29 03:07:50,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,473 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,473 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 214 flow. Second operand 5 states and 138 transitions. [2023-11-29 03:07:50,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 94 transitions, 509 flow [2023-11-29 03:07:50,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:07:50,482 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 240 flow [2023-11-29 03:07:50,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-11-29 03:07:50,483 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2023-11-29 03:07:50,483 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 240 flow [2023-11-29 03:07:50,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:50,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:50,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:07:50,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:50,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -812811876, now seen corresponding path program 1 times [2023-11-29 03:07:50,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:50,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058605676] [2023-11-29 03:07:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058605676] [2023-11-29 03:07:50,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058605676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:50,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:50,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:50,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082294100] [2023-11-29 03:07:50,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:50,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:07:50,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:50,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:07:50,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:07:50,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:50,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:50,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:50,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:50,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:50,979 INFO L124 PetriNetUnfolderBase]: 1978/3223 cut-off events. [2023-11-29 03:07:50,979 INFO L125 PetriNetUnfolderBase]: For 2986/3130 co-relation queries the response was YES. [2023-11-29 03:07:50,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 3223 events. 1978/3223 cut-off events. For 2986/3130 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17958 event pairs, 606 based on Foata normal form. 136/2870 useless extension candidates. Maximal degree in co-relation 8597. Up to 1209 conditions per place. [2023-11-29 03:07:51,000 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 80 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2023-11-29 03:07:51,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 98 transitions, 604 flow [2023-11-29 03:07:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:07:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:07:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-29 03:07:51,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534883720930233 [2023-11-29 03:07:51,001 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-29 03:07:51,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-29 03:07:51,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:51,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-29 03:07:51,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,003 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 240 flow. Second operand 5 states and 119 transitions. [2023-11-29 03:07:51,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 98 transitions, 604 flow [2023-11-29 03:07:51,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 599 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:07:51,009 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 251 flow [2023-11-29 03:07:51,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-29 03:07:51,010 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2023-11-29 03:07:51,010 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 251 flow [2023-11-29 03:07:51,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:51,011 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:51,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:07:51,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:51,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash 874535841, now seen corresponding path program 1 times [2023-11-29 03:07:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:51,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937885093] [2023-11-29 03:07:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:51,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:51,094 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 03:07:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:51,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937885093] [2023-11-29 03:07:51,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937885093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:51,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:51,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:51,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252829034] [2023-11-29 03:07:51,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:51,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:07:51,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:51,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:07:51,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:07:51,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-29 03:07:51,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:51,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-29 03:07:51,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:51,368 INFO L124 PetriNetUnfolderBase]: 1324/2331 cut-off events. [2023-11-29 03:07:51,368 INFO L125 PetriNetUnfolderBase]: For 2150/2172 co-relation queries the response was YES. [2023-11-29 03:07:51,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6498 conditions, 2331 events. 1324/2331 cut-off events. For 2150/2172 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13109 event pairs, 878 based on Foata normal form. 38/2120 useless extension candidates. Maximal degree in co-relation 6457. Up to 1553 conditions per place. [2023-11-29 03:07:51,386 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 66 selfloop transitions, 5 changer transitions 2/83 dead transitions. [2023-11-29 03:07:51,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 492 flow [2023-11-29 03:07:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:07:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:07:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2023-11-29 03:07:51,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232558139534884 [2023-11-29 03:07:51,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 134 transitions. [2023-11-29 03:07:51,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 134 transitions. [2023-11-29 03:07:51,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:51,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 134 transitions. [2023-11-29 03:07:51,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,389 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 251 flow. Second operand 5 states and 134 transitions. [2023-11-29 03:07:51,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 492 flow [2023-11-29 03:07:51,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 458 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:07:51,395 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 262 flow [2023-11-29 03:07:51,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-29 03:07:51,396 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2023-11-29 03:07:51,396 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 262 flow [2023-11-29 03:07:51,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:51,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:51,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:07:51,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:51,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash 572636088, now seen corresponding path program 1 times [2023-11-29 03:07:51,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:51,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815809906] [2023-11-29 03:07:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:51,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815809906] [2023-11-29 03:07:51,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815809906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:51,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437764228] [2023-11-29 03:07:51,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:07:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:07:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:07:51,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:51,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:51,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:51,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:51,781 INFO L124 PetriNetUnfolderBase]: 1556/2627 cut-off events. [2023-11-29 03:07:51,781 INFO L125 PetriNetUnfolderBase]: For 3121/3169 co-relation queries the response was YES. [2023-11-29 03:07:51,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7330 conditions, 2627 events. 1556/2627 cut-off events. For 3121/3169 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14259 event pairs, 1083 based on Foata normal form. 0/2265 useless extension candidates. Maximal degree in co-relation 7288. Up to 1871 conditions per place. [2023-11-29 03:07:51,795 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 42 selfloop transitions, 2 changer transitions 28/81 dead transitions. [2023-11-29 03:07:51,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 484 flow [2023-11-29 03:07:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:07:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:07:51,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2023-11-29 03:07:51,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720930232558139 [2023-11-29 03:07:51,797 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 123 transitions. [2023-11-29 03:07:51,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 123 transitions. [2023-11-29 03:07:51,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:51,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 123 transitions. [2023-11-29 03:07:51,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,799 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,799 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 262 flow. Second operand 5 states and 123 transitions. [2023-11-29 03:07:51,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 484 flow [2023-11-29 03:07:51,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 479 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:07:51,804 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 228 flow [2023-11-29 03:07:51,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2023-11-29 03:07:51,805 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2023-11-29 03:07:51,805 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 228 flow [2023-11-29 03:07:51,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:51,806 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:51,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:07:51,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:51,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1923654892, now seen corresponding path program 1 times [2023-11-29 03:07:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:51,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589349073] [2023-11-29 03:07:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:51,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:51,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:51,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589349073] [2023-11-29 03:07:51,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589349073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:51,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002679176] [2023-11-29 03:07:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:51,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:51,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:51,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:51,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:07:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:51,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:07:51,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:51,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002679176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:51,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:07:51,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 03:07:51,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916477040] [2023-11-29 03:07:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:51,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:07:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:07:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:07:51,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:51,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:51,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:51,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:51,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:52,354 INFO L124 PetriNetUnfolderBase]: 1271/2036 cut-off events. [2023-11-29 03:07:52,354 INFO L125 PetriNetUnfolderBase]: For 1892/2012 co-relation queries the response was YES. [2023-11-29 03:07:52,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5825 conditions, 2036 events. 1271/2036 cut-off events. For 1892/2012 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10216 event pairs, 241 based on Foata normal form. 62/1889 useless extension candidates. Maximal degree in co-relation 5795. Up to 621 conditions per place. [2023-11-29 03:07:52,365 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 101 selfloop transitions, 7 changer transitions 0/116 dead transitions. [2023-11-29 03:07:52,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 116 transitions, 684 flow [2023-11-29 03:07:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:07:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:07:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2023-11-29 03:07:52,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624031007751938 [2023-11-29 03:07:52,366 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 161 transitions. [2023-11-29 03:07:52,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 161 transitions. [2023-11-29 03:07:52,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:52,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 161 transitions. [2023-11-29 03:07:52,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:52,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:52,368 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:52,368 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 228 flow. Second operand 6 states and 161 transitions. [2023-11-29 03:07:52,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 116 transitions, 684 flow [2023-11-29 03:07:52,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 116 transitions, 622 flow, removed 29 selfloop flow, removed 8 redundant places. [2023-11-29 03:07:52,374 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 216 flow [2023-11-29 03:07:52,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-29 03:07:52,375 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2023-11-29 03:07:52,375 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 216 flow [2023-11-29 03:07:52,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:52,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:52,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:52,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:07:52,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:07:52,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:52,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:52,577 INFO L85 PathProgramCache]: Analyzing trace with hash -496240038, now seen corresponding path program 1 times [2023-11-29 03:07:52,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:52,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80512314] [2023-11-29 03:07:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:52,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:52,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:52,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80512314] [2023-11-29 03:07:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80512314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158543946] [2023-11-29 03:07:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:52,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:52,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:52,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:52,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:07:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:52,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:07:52,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:52,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158543946] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:52,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 03:07:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355330282] [2023-11-29 03:07:52,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:52,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:07:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:07:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:07:52,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:52,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:52,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:52,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:52,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:53,413 INFO L124 PetriNetUnfolderBase]: 2393/3768 cut-off events. [2023-11-29 03:07:53,413 INFO L125 PetriNetUnfolderBase]: For 2829/2987 co-relation queries the response was YES. [2023-11-29 03:07:53,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10535 conditions, 3768 events. 2393/3768 cut-off events. For 2829/2987 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 18758 event pairs, 573 based on Foata normal form. 186/3388 useless extension candidates. Maximal degree in co-relation 10504. Up to 1523 conditions per place. [2023-11-29 03:07:53,454 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 168 selfloop transitions, 13 changer transitions 0/189 dead transitions. [2023-11-29 03:07:53,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 189 transitions, 1040 flow [2023-11-29 03:07:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:07:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:07:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2023-11-29 03:07:53,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2023-11-29 03:07:53,457 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 276 transitions. [2023-11-29 03:07:53,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 276 transitions. [2023-11-29 03:07:53,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:53,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 276 transitions. [2023-11-29 03:07:53,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:53,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:53,460 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:53,460 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 216 flow. Second operand 10 states and 276 transitions. [2023-11-29 03:07:53,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 189 transitions, 1040 flow [2023-11-29 03:07:53,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 189 transitions, 994 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 03:07:53,469 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 268 flow [2023-11-29 03:07:53,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=268, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-11-29 03:07:53,469 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-11-29 03:07:53,470 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 268 flow [2023-11-29 03:07:53,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:53,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:53,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:53,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:07:53,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:53,676 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:53,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:53,676 INFO L85 PathProgramCache]: Analyzing trace with hash 482063542, now seen corresponding path program 1 times [2023-11-29 03:07:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757065454] [2023-11-29 03:07:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:53,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757065454] [2023-11-29 03:07:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757065454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656256982] [2023-11-29 03:07:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:53,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:53,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:53,738 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:53,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:07:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:53,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:07:53,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:53,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:54,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656256982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:54,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:54,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 20 [2023-11-29 03:07:54,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164000433] [2023-11-29 03:07:54,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:54,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:07:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:54,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:07:54,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:07:54,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2023-11-29 03:07:54,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 268 flow. Second operand has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:54,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:54,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2023-11-29 03:07:54,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:55,588 INFO L124 PetriNetUnfolderBase]: 4565/7011 cut-off events. [2023-11-29 03:07:55,588 INFO L125 PetriNetUnfolderBase]: For 6964/7034 co-relation queries the response was YES. [2023-11-29 03:07:55,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19686 conditions, 7011 events. 4565/7011 cut-off events. For 6964/7034 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 38861 event pairs, 874 based on Foata normal form. 128/6403 useless extension candidates. Maximal degree in co-relation 19652. Up to 1073 conditions per place. [2023-11-29 03:07:55,636 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 268 selfloop transitions, 23 changer transitions 0/297 dead transitions. [2023-11-29 03:07:55,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 297 transitions, 1885 flow [2023-11-29 03:07:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:07:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 03:07:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 332 transitions. [2023-11-29 03:07:55,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147286821705427 [2023-11-29 03:07:55,640 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 332 transitions. [2023-11-29 03:07:55,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 332 transitions. [2023-11-29 03:07:55,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:55,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 332 transitions. [2023-11-29 03:07:55,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.133333333333333) internal successors, (332), 15 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:55,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 43.0) internal successors, (688), 16 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:55,644 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 43.0) internal successors, (688), 16 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:55,644 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 268 flow. Second operand 15 states and 332 transitions. [2023-11-29 03:07:55,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 297 transitions, 1885 flow [2023-11-29 03:07:55,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 297 transitions, 1775 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-11-29 03:07:55,678 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 321 flow [2023-11-29 03:07:55,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=321, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-11-29 03:07:55,679 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2023-11-29 03:07:55,679 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 321 flow [2023-11-29 03:07:55,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.75) internal successors, (255), 20 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:55,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:55,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:55,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:07:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:07:55,881 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:55,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash 180163789, now seen corresponding path program 1 times [2023-11-29 03:07:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:55,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702287201] [2023-11-29 03:07:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702287201] [2023-11-29 03:07:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702287201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101416156] [2023-11-29 03:07:56,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:56,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:56,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:56,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:56,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:07:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:56,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:07:56,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:56,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:56,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101416156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:56,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:56,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2023-11-29 03:07:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372662438] [2023-11-29 03:07:56,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:56,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:07:56,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:56,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:07:56,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:07:56,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2023-11-29 03:07:56,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 321 flow. Second operand has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:56,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:56,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2023-11-29 03:07:56,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:58,057 INFO L124 PetriNetUnfolderBase]: 8895/13895 cut-off events. [2023-11-29 03:07:58,058 INFO L125 PetriNetUnfolderBase]: For 17599/17787 co-relation queries the response was YES. [2023-11-29 03:07:58,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40452 conditions, 13895 events. 8895/13895 cut-off events. For 17599/17787 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 86820 event pairs, 5059 based on Foata normal form. 0/12213 useless extension candidates. Maximal degree in co-relation 40413. Up to 4274 conditions per place. [2023-11-29 03:07:58,173 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 191 selfloop transitions, 20 changer transitions 27/244 dead transitions. [2023-11-29 03:07:58,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 244 transitions, 1591 flow [2023-11-29 03:07:58,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:07:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 03:07:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 280 transitions. [2023-11-29 03:07:58,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008944543828264 [2023-11-29 03:07:58,175 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 280 transitions. [2023-11-29 03:07:58,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 280 transitions. [2023-11-29 03:07:58,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:58,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 280 transitions. [2023-11-29 03:07:58,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 21.53846153846154) internal successors, (280), 13 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:58,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:58,178 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:58,178 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 321 flow. Second operand 13 states and 280 transitions. [2023-11-29 03:07:58,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 244 transitions, 1591 flow [2023-11-29 03:07:58,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 244 transitions, 1455 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-11-29 03:07:58,203 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 357 flow [2023-11-29 03:07:58,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=357, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2023-11-29 03:07:58,204 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2023-11-29 03:07:58,204 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 357 flow [2023-11-29 03:07:58,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:58,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:58,204 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 03:07:58,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:07:58,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:07:58,405 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:07:58,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash 521374030, now seen corresponding path program 2 times [2023-11-29 03:07:58,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:58,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191192978] [2023-11-29 03:07:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:58,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:58,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:58,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191192978] [2023-11-29 03:07:58,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191192978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:58,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964908273] [2023-11-29 03:07:58,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:07:58,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:58,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:58,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:58,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:07:58,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:07:58,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:07:58,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:07:58,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:07:58,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:07:58,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964908273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:58,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:58,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 03:07:58,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273746162] [2023-11-29 03:07:58,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:58,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:07:58,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:58,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:07:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:07:58,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:07:58,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 357 flow. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:58,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:58,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:07:58,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:59,964 INFO L124 PetriNetUnfolderBase]: 7880/12806 cut-off events. [2023-11-29 03:07:59,964 INFO L125 PetriNetUnfolderBase]: For 14476/14580 co-relation queries the response was YES. [2023-11-29 03:07:59,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38282 conditions, 12806 events. 7880/12806 cut-off events. For 14476/14580 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 83335 event pairs, 5631 based on Foata normal form. 2/11888 useless extension candidates. Maximal degree in co-relation 38229. Up to 10799 conditions per place. [2023-11-29 03:08:00,040 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 50 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2023-11-29 03:08:00,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 75 transitions, 505 flow [2023-11-29 03:08:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:08:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:08:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 224 transitions. [2023-11-29 03:08:00,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37209302325581395 [2023-11-29 03:08:00,043 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 224 transitions. [2023-11-29 03:08:00,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 224 transitions. [2023-11-29 03:08:00,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:00,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 224 transitions. [2023-11-29 03:08:00,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:00,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:00,047 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:00,047 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 357 flow. Second operand 14 states and 224 transitions. [2023-11-29 03:08:00,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 75 transitions, 505 flow [2023-11-29 03:08:00,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 75 transitions, 475 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-29 03:08:00,122 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 375 flow [2023-11-29 03:08:00,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=375, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2023-11-29 03:08:00,123 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 48 predicate places. [2023-11-29 03:08:00,123 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 375 flow [2023-11-29 03:08:00,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:00,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:08:00,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:00,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:08:00,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:08:00,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:08:00,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2060866964, now seen corresponding path program 1 times [2023-11-29 03:08:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:00,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166938534] [2023-11-29 03:08:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:00,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:08:00,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166938534] [2023-11-29 03:08:00,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166938534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998606610] [2023-11-29 03:08:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:00,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:00,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:00,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:00,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:08:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:00,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:08:00,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:08:00,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:08:00,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998606610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:08:00,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:08:00,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 03:08:00,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869880444] [2023-11-29 03:08:00,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:08:00,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:08:00,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:00,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:08:00,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:08:00,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:08:00,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 375 flow. Second operand has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:08:00,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:08:00,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:08:02,610 INFO L124 PetriNetUnfolderBase]: 14810/22543 cut-off events. [2023-11-29 03:08:02,610 INFO L125 PetriNetUnfolderBase]: For 28014/28978 co-relation queries the response was YES. [2023-11-29 03:08:02,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67394 conditions, 22543 events. 14810/22543 cut-off events. For 28014/28978 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 141133 event pairs, 3955 based on Foata normal form. 924/21103 useless extension candidates. Maximal degree in co-relation 61570. Up to 9154 conditions per place. [2023-11-29 03:08:02,711 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 304 selfloop transitions, 18 changer transitions 0/328 dead transitions. [2023-11-29 03:08:02,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 328 transitions, 2198 flow [2023-11-29 03:08:02,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:08:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:08:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2023-11-29 03:08:02,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2023-11-29 03:08:02,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 276 transitions. [2023-11-29 03:08:02,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 276 transitions. [2023-11-29 03:08:02,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:02,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 276 transitions. [2023-11-29 03:08:02,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:02,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:02,716 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:02,716 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 375 flow. Second operand 10 states and 276 transitions. [2023-11-29 03:08:02,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 328 transitions, 2198 flow [2023-11-29 03:08:02,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 328 transitions, 2132 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-29 03:08:02,805 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 396 flow [2023-11-29 03:08:02,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=396, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2023-11-29 03:08:02,805 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 48 predicate places. [2023-11-29 03:08:02,805 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 396 flow [2023-11-29 03:08:02,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:02,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:08:02,806 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:02,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:08:03,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:08:03,007 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:08:03,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:03,007 INFO L85 PathProgramCache]: Analyzing trace with hash -359129875, now seen corresponding path program 2 times [2023-11-29 03:08:03,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:03,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910809318] [2023-11-29 03:08:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:03,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:08:03,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910809318] [2023-11-29 03:08:03,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910809318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116026927] [2023-11-29 03:08:03,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:08:03,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:03,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:03,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:08:03,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:08:03,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:08:03,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:08:03,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:08:03,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:08:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116026927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:08:03,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:08:03,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 11 [2023-11-29 03:08:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420602992] [2023-11-29 03:08:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:08:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:08:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:08:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:08:03,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2023-11-29 03:08:03,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:03,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:08:03,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2023-11-29 03:08:03,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:08:05,422 INFO L124 PetriNetUnfolderBase]: 13952/21759 cut-off events. [2023-11-29 03:08:05,422 INFO L125 PetriNetUnfolderBase]: For 35085/35139 co-relation queries the response was YES. [2023-11-29 03:08:05,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71353 conditions, 21759 events. 13952/21759 cut-off events. For 35085/35139 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 141010 event pairs, 6953 based on Foata normal form. 0/20382 useless extension candidates. Maximal degree in co-relation 66213. Up to 14157 conditions per place. [2023-11-29 03:08:05,517 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 108 selfloop transitions, 7 changer transitions 4/125 dead transitions. [2023-11-29 03:08:05,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 842 flow [2023-11-29 03:08:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:08:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:08:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2023-11-29 03:08:05,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2023-11-29 03:08:05,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 92 transitions. [2023-11-29 03:08:05,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 92 transitions. [2023-11-29 03:08:05,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:05,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 92 transitions. [2023-11-29 03:08:05,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:05,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:05,520 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:05,520 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 396 flow. Second operand 4 states and 92 transitions. [2023-11-29 03:08:05,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 842 flow [2023-11-29 03:08:05,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 125 transitions, 810 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 03:08:05,624 INFO L231 Difference]: Finished difference. Result has 92 places, 81 transitions, 383 flow [2023-11-29 03:08:05,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2023-11-29 03:08:05,625 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 48 predicate places. [2023-11-29 03:08:05,625 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 383 flow [2023-11-29 03:08:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:05,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:08:05,625 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:05,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:08:05,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:05,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:08:05,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1643337783, now seen corresponding path program 2 times [2023-11-29 03:08:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017339869] [2023-11-29 03:08:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:08:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017339869] [2023-11-29 03:08:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017339869] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082774800] [2023-11-29 03:08:05,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:08:05,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:05,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:05,940 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:05,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:08:06,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:08:06,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:08:06,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:08:06,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:08:06,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:08:06,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082774800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:08:06,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:08:06,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-11-29 03:08:06,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898126975] [2023-11-29 03:08:06,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:08:06,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:08:06,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:06,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:08:06,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:08:06,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2023-11-29 03:08:06,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 383 flow. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 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 03:08:06,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:08:06,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2023-11-29 03:08:06,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:08:08,018 INFO L124 PetriNetUnfolderBase]: 12838/19959 cut-off events. [2023-11-29 03:08:08,018 INFO L125 PetriNetUnfolderBase]: For 37372/37372 co-relation queries the response was YES. [2023-11-29 03:08:08,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65170 conditions, 19959 events. 12838/19959 cut-off events. For 37372/37372 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 125301 event pairs, 5123 based on Foata normal form. 368/19698 useless extension candidates. Maximal degree in co-relation 60717. Up to 10349 conditions per place. [2023-11-29 03:08:08,097 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 70 selfloop transitions, 14 changer transitions 75/164 dead transitions. [2023-11-29 03:08:08,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1063 flow [2023-11-29 03:08:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:08:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 03:08:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2023-11-29 03:08:08,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47568710359408034 [2023-11-29 03:08:08,099 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 225 transitions. [2023-11-29 03:08:08,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 225 transitions. [2023-11-29 03:08:08,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:08,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 225 transitions. [2023-11-29 03:08:08,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.454545454545453) internal successors, (225), 11 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:08,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:08,101 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:08,101 INFO L175 Difference]: Start difference. First operand has 92 places, 81 transitions, 383 flow. Second operand 11 states and 225 transitions. [2023-11-29 03:08:08,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1063 flow [2023-11-29 03:08:08,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 164 transitions, 1017 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-29 03:08:08,204 INFO L231 Difference]: Finished difference. Result has 95 places, 65 transitions, 311 flow [2023-11-29 03:08:08,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=311, PETRI_PLACES=95, PETRI_TRANSITIONS=65} [2023-11-29 03:08:08,204 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2023-11-29 03:08:08,205 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 65 transitions, 311 flow [2023-11-29 03:08:08,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 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 03:08:08,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:08:08,205 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:08,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:08:08,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:08,405 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 03:08:08,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:08,406 INFO L85 PathProgramCache]: Analyzing trace with hash -829839234, now seen corresponding path program 2 times [2023-11-29 03:08:08,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:08,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681458725] [2023-11-29 03:08:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:08,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:08:08,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:08,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681458725] [2023-11-29 03:08:08,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681458725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:08,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175649569] [2023-11-29 03:08:08,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:08:08,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:08,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:08,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:08,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:08:08,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:08:08,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:08:08,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:08:08,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 03:08:08,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 03:08:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175649569] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:08:08,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:08:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 3, 3] total 20 [2023-11-29 03:08:08,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288365648] [2023-11-29 03:08:08,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:08:08,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:08:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:08:08,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:08:09,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2023-11-29 03:08:09,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 65 transitions, 311 flow. Second operand has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:09,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:08:09,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2023-11-29 03:08:09,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:08:10,390 INFO L124 PetriNetUnfolderBase]: 6757/10611 cut-off events. [2023-11-29 03:08:10,390 INFO L125 PetriNetUnfolderBase]: For 19141/19141 co-relation queries the response was YES. [2023-11-29 03:08:10,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34448 conditions, 10611 events. 6757/10611 cut-off events. For 19141/19141 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 62626 event pairs, 1738 based on Foata normal form. 308/10476 useless extension candidates. Maximal degree in co-relation 33638. Up to 2892 conditions per place. [2023-11-29 03:08:10,414 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 0 selfloop transitions, 0 changer transitions 261/261 dead transitions. [2023-11-29 03:08:10,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 261 transitions, 1839 flow [2023-11-29 03:08:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:08:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 03:08:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 307 transitions. [2023-11-29 03:08:10,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44622093023255816 [2023-11-29 03:08:10,416 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 307 transitions. [2023-11-29 03:08:10,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 307 transitions. [2023-11-29 03:08:10,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:10,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 307 transitions. [2023-11-29 03:08:10,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 19.1875) internal successors, (307), 16 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:10,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:10,419 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:10,419 INFO L175 Difference]: Start difference. First operand has 95 places, 65 transitions, 311 flow. Second operand 16 states and 307 transitions. [2023-11-29 03:08:10,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 261 transitions, 1839 flow [2023-11-29 03:08:10,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 261 transitions, 1549 flow, removed 49 selfloop flow, removed 16 redundant places. [2023-11-29 03:08:10,494 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-11-29 03:08:10,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-11-29 03:08:10,494 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2023-11-29 03:08:10,495 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-11-29 03:08:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:10,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-11-29 03:08:10,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-29 03:08:10,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-29 03:08:10,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-29 03:08:10,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-29 03:08:10,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-29 03:08:10,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-29 03:08:10,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-29 03:08:10,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-11-29 03:08:10,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-11-29 03:08:10,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-11-29 03:08:10,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-29 03:08:10,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-29 03:08:10,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-29 03:08:10,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-29 03:08:10,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-29 03:08:10,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-29 03:08:10,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:08:10,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:10,700 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:10,706 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 03:08:10,706 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:08:10,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:08:10 BasicIcfg [2023-11-29 03:08:10,711 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:08:10,712 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:08:10,712 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:08:10,712 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:08:10,712 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:07:46" (3/4) ... [2023-11-29 03:08:10,714 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:08:10,717 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 03:08:10,717 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 03:08:10,717 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 03:08:10,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 96 nodes and edges [2023-11-29 03:08:10,723 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-29 03:08:10,724 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 03:08:10,724 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 03:08:10,812 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:08:10,813 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:08:10,813 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:08:10,814 INFO L158 Benchmark]: Toolchain (without parser) took 24922.93ms. Allocated memory was 167.8MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 131.0MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2023-11-29 03:08:10,814 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:08:10,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.97ms. Allocated memory is still 167.8MB. Free memory was 131.0MB in the beginning and 131.0MB in the end (delta: 368B). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:08:10,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.12ms. Allocated memory is still 167.8MB. Free memory was 130.3MB in the beginning and 128.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:08:10,815 INFO L158 Benchmark]: Boogie Preprocessor took 49.35ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 126.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:08:10,816 INFO L158 Benchmark]: RCFGBuilder took 643.78ms. Allocated memory is still 167.8MB. Free memory was 126.1MB in the beginning and 80.7MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-29 03:08:10,816 INFO L158 Benchmark]: TraceAbstraction took 23796.89ms. Allocated memory was 167.8MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 80.0MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-11-29 03:08:10,816 INFO L158 Benchmark]: Witness Printer took 101.71ms. Allocated memory is still 3.7GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 03:08:10,818 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.97ms. Allocated memory is still 167.8MB. Free memory was 131.0MB in the beginning and 131.0MB in the end (delta: 368B). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.12ms. Allocated memory is still 167.8MB. Free memory was 130.3MB in the beginning and 128.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.35ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 126.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 643.78ms. Allocated memory is still 167.8MB. Free memory was 126.1MB in the beginning and 80.7MB in the end (delta: 45.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 23796.89ms. Allocated memory was 167.8MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 80.0MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 101.71ms. Allocated memory is still 3.7GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: 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, 64 locations, 17 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: 23.7s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1618 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1561 mSDsluCounter, 1193 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1169 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6026 IncrementalHoareTripleChecker+Invalid, 6069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 24 mSDtfsCounter, 6026 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 451 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=15, InterpolantAutomatonStates: 147, 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, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 396 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 490 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1503 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 37 InterpolantComputations, 10 PerfectInterpolantSequences, 238/383 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 03:08:10,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2772b393-f056-473e-8f2e-570d07487c11/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