./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.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_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/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_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/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_4150e531-86d9-4918-8af7-217c3bbdd667/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 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:29:22,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:29:22,259 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:29:22,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:29:22,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:29:22,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:29:22,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:29:22,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:29:22,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:29:22,300 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:29:22,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:29:22,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:29:22,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:29:22,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:29:22,303 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:29:22,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:29:22,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:29:22,304 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:29:22,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:29:22,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:29:22,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:29:22,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:29:22,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:29:22,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:29:22,308 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:29:22,308 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:29:22,308 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:29:22,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:29:22,309 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:29:22,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:29:22,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:29:22,310 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:29:22,310 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:29:22,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:22,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:29:22,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:29:22,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:29:22,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:29:22,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:29:22,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:29:22,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:29:22,316 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:29:22,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:29:22,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:29:22,317 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_4150e531-86d9-4918-8af7-217c3bbdd667/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2023-11-29 00:29:22,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:29:22,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:29:22,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:29:22,578 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:29:22,579 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:29:22,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-29 00:29:25,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:29:25,461 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:29:25,462 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-29 00:29:25,468 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/data/370b4eda3/e2b114d5d4b14538b16eef2129bd031b/FLAG64c8efde2 [2023-11-29 00:29:25,481 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/data/370b4eda3/e2b114d5d4b14538b16eef2129bd031b [2023-11-29 00:29:25,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:29:25,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:29:25,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:25,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:29:25,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:29:25,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf1721f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25, skipping insertion in model container [2023-11-29 00:29:25,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,516 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:29:25,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:25,681 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:29:25,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:25,727 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:29:25,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25 WrapperNode [2023-11-29 00:29:25,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:25,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:25,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:29:25,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:29:25,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,764 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2023-11-29 00:29:25,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:25,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:29:25,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:29:25,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:29:25,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,790 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 2, 7, 2, 2]. 47 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 00:29:25,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:29:25,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:29:25,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:29:25,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:29:25,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (1/1) ... [2023-11-29 00:29:25,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:25,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:29:25,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:29:25,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:29:25,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:29:25,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:29:25,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:29:25,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:29:25,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:29:25,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:29:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:29:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:29:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:29:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:29:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:29:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:29:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:29:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:29:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:29:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:29:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:29:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:29:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:29:25,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:29:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:29:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:29:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:29:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:29:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:29:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:29:25,869 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 00:29:26,009 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:29:26,011 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:29:26,292 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:29:26,494 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:29:26,495 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 00:29:26,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:26 BoogieIcfgContainer [2023-11-29 00:29:26,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:29:26,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:29:26,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:29:26,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:29:26,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:29:25" (1/3) ... [2023-11-29 00:29:26,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ba229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:26, skipping insertion in model container [2023-11-29 00:29:26,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:25" (2/3) ... [2023-11-29 00:29:26,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ba229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:26, skipping insertion in model container [2023-11-29 00:29:26,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:26" (3/3) ... [2023-11-29 00:29:26,504 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-11-29 00:29:26,514 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:29:26,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:29:26,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-29 00:29:26,525 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:29:26,592 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:29:26,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 173 flow [2023-11-29 00:29:26,683 INFO L124 PetriNetUnfolderBase]: 9/73 cut-off events. [2023-11-29 00:29:26,684 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:29:26,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 9/73 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 226 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-11-29 00:29:26,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 76 transitions, 173 flow [2023-11-29 00:29:26,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 157 flow [2023-11-29 00:29:26,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:29:26,708 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;@50ce3cb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:29:26,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-29 00:29:26,712 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:29:26,712 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 00:29:26,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:29:26,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:26,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:29:26,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:26,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash 507306, now seen corresponding path program 1 times [2023-11-29 00:29:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:26,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087566577] [2023-11-29 00:29:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:26,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:26,937 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 00:29:26,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087566577] [2023-11-29 00:29:26,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087566577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:26,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:26,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:26,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663130786] [2023-11-29 00:29:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:26,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:26,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:26,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-29 00:29:26,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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 00:29:26,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:26,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-29 00:29:26,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:27,684 INFO L124 PetriNetUnfolderBase]: 2248/4373 cut-off events. [2023-11-29 00:29:27,685 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-29 00:29:27,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 4373 events. 2248/4373 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 33594 event pairs, 1576 based on Foata normal form. 216/3908 useless extension candidates. Maximal degree in co-relation 6844. Up to 3073 conditions per place. [2023-11-29 00:29:27,734 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 32 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2023-11-29 00:29:27,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 223 flow [2023-11-29 00:29:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:29:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2023-11-29 00:29:27,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888157894736842 [2023-11-29 00:29:27,748 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 179 transitions. [2023-11-29 00:29:27,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 179 transitions. [2023-11-29 00:29:27,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:27,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 179 transitions. [2023-11-29 00:29:27,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:27,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:27,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:27,761 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 157 flow. Second operand 4 states and 179 transitions. [2023-11-29 00:29:27,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 223 flow [2023-11-29 00:29:27,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 214 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 00:29:27,771 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 150 flow [2023-11-29 00:29:27,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-11-29 00:29:27,777 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-29 00:29:27,777 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 150 flow [2023-11-29 00:29:27,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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 00:29:27,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:27,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 00:29:27,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:29:27,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:27,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash 15727023, now seen corresponding path program 1 times [2023-11-29 00:29:27,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:27,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299855040] [2023-11-29 00:29:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:27,859 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 00:29:27,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:27,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299855040] [2023-11-29 00:29:27,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299855040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:27,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:27,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:27,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054285798] [2023-11-29 00:29:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:27,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:27,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:27,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-29 00:29:27,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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 00:29:27,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:27,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-29 00:29:27,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:28,332 INFO L124 PetriNetUnfolderBase]: 2249/4377 cut-off events. [2023-11-29 00:29:28,332 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-29 00:29:28,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 4377 events. 2249/4377 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 33631 event pairs, 1576 based on Foata normal form. 1/3697 useless extension candidates. Maximal degree in co-relation 7534. Up to 3078 conditions per place. [2023-11-29 00:29:28,368 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 35 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-29 00:29:28,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 240 flow [2023-11-29 00:29:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:29:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2023-11-29 00:29:28,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2023-11-29 00:29:28,371 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 180 transitions. [2023-11-29 00:29:28,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 180 transitions. [2023-11-29 00:29:28,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:28,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 180 transitions. [2023-11-29 00:29:28,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:28,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:28,376 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:28,376 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 150 flow. Second operand 4 states and 180 transitions. [2023-11-29 00:29:28,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 240 flow [2023-11-29 00:29:28,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:29:28,378 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 169 flow [2023-11-29 00:29:28,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2023-11-29 00:29:28,380 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-29 00:29:28,380 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 169 flow [2023-11-29 00:29:28,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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 00:29:28,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:28,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:29:28,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:29:28,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:28,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash 487650081, now seen corresponding path program 1 times [2023-11-29 00:29:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697881209] [2023-11-29 00:29:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:28,455 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 00:29:28,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697881209] [2023-11-29 00:29:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697881209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:28,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:28,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143867660] [2023-11-29 00:29:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:28,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:28,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-29 00:29:28,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:28,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:28,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-29 00:29:28,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:29,080 INFO L124 PetriNetUnfolderBase]: 2862/5285 cut-off events. [2023-11-29 00:29:29,080 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-29 00:29:29,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9330 conditions, 5285 events. 2862/5285 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 40281 event pairs, 2067 based on Foata normal form. 243/4872 useless extension candidates. Maximal degree in co-relation 9304. Up to 3915 conditions per place. [2023-11-29 00:29:29,156 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 38 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-29 00:29:29,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 245 flow [2023-11-29 00:29:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-11-29 00:29:29,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2023-11-29 00:29:29,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-11-29 00:29:29,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-11-29 00:29:29,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:29,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-11-29 00:29:29,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 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 00:29:29,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,161 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 169 flow. Second operand 3 states and 138 transitions. [2023-11-29 00:29:29,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 245 flow [2023-11-29 00:29:29,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:29,164 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 166 flow [2023-11-29 00:29:29,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-11-29 00:29:29,165 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-11-29 00:29:29,165 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 166 flow [2023-11-29 00:29:29,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:29,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:29:29,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:29:29,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:29,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2062716119, now seen corresponding path program 1 times [2023-11-29 00:29:29,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:29,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013351931] [2023-11-29 00:29:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:29,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:29,210 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 00:29:29,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:29,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013351931] [2023-11-29 00:29:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013351931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:29,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:29,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:29:29,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161453786] [2023-11-29 00:29:29,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:29,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:29,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:29,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:29,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:29,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-29 00:29:29,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:29,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-29 00:29:29,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:29,644 INFO L124 PetriNetUnfolderBase]: 2249/4235 cut-off events. [2023-11-29 00:29:29,645 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-29 00:29:29,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 4235 events. 2249/4235 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 31271 event pairs, 1576 based on Foata normal form. 200/3898 useless extension candidates. Maximal degree in co-relation 7399. Up to 3078 conditions per place. [2023-11-29 00:29:29,700 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 37 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-11-29 00:29:29,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 238 flow [2023-11-29 00:29:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2023-11-29 00:29:29,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2023-11-29 00:29:29,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 136 transitions. [2023-11-29 00:29:29,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 136 transitions. [2023-11-29 00:29:29,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:29,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 136 transitions. [2023-11-29 00:29:29,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,706 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 166 flow. Second operand 3 states and 136 transitions. [2023-11-29 00:29:29,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 238 flow [2023-11-29 00:29:29,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:29,709 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 162 flow [2023-11-29 00:29:29,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2023-11-29 00:29:29,710 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-29 00:29:29,710 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 162 flow [2023-11-29 00:29:29,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:29,711 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 00:29:29,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:29:29,711 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:29,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:29,712 INFO L85 PathProgramCache]: Analyzing trace with hash 372840542, now seen corresponding path program 1 times [2023-11-29 00:29:29,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:29,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053584374] [2023-11-29 00:29:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:29,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:29,815 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 00:29:29,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:29,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053584374] [2023-11-29 00:29:29,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053584374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:29,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881754086] [2023-11-29 00:29:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:29,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:29,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:29,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:29,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:29:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:29,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:29:29,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:29,970 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 00:29:29,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:30,014 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 00:29:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881754086] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:30,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 00:29:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419574692] [2023-11-29 00:29:30,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:30,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:29:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:30,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:29:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:29:30,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-29 00:29:30,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 162 flow. Second operand has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:30,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:30,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-29 00:29:30,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:30,649 INFO L124 PetriNetUnfolderBase]: 2252/4247 cut-off events. [2023-11-29 00:29:30,649 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-29 00:29:30,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 4247 events. 2252/4247 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 31437 event pairs, 1576 based on Foata normal form. 0/3705 useless extension candidates. Maximal degree in co-relation 7451. Up to 3081 conditions per place. [2023-11-29 00:29:30,672 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 35 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2023-11-29 00:29:30,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 297 flow [2023-11-29 00:29:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:29:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:29:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2023-11-29 00:29:30,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276315789473685 [2023-11-29 00:29:30,675 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2023-11-29 00:29:30,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2023-11-29 00:29:30,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:30,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2023-11-29 00:29:30,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:30,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:30,680 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:30,680 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 162 flow. Second operand 10 states and 401 transitions. [2023-11-29 00:29:30,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 297 flow [2023-11-29 00:29:30,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:30,683 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 244 flow [2023-11-29 00:29:30,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-11-29 00:29:30,684 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-29 00:29:30,684 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 244 flow [2023-11-29 00:29:30,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:30,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:30,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:30,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:30,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:30,886 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:30,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2016722214, now seen corresponding path program 1 times [2023-11-29 00:29:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:30,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603901344] [2023-11-29 00:29:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:30,930 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 00:29:30,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:30,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603901344] [2023-11-29 00:29:30,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603901344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:30,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:30,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:30,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515839967] [2023-11-29 00:29:30,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:30,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:30,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:30,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:30,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-29 00:29:30,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:30,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:30,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-29 00:29:30,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:31,723 INFO L124 PetriNetUnfolderBase]: 4398/7672 cut-off events. [2023-11-29 00:29:31,723 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-29 00:29:31,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13864 conditions, 7672 events. 4398/7672 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 54594 event pairs, 2145 based on Foata normal form. 114/6986 useless extension candidates. Maximal degree in co-relation 13851. Up to 4127 conditions per place. [2023-11-29 00:29:31,763 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 71 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-11-29 00:29:31,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 445 flow [2023-11-29 00:29:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-11-29 00:29:31,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412280701754386 [2023-11-29 00:29:31,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-11-29 00:29:31,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-11-29 00:29:31,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:31,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-11-29 00:29:31,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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 00:29:31,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:31,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:31,767 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 244 flow. Second operand 3 states and 169 transitions. [2023-11-29 00:29:31,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 445 flow [2023-11-29 00:29:31,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 415 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 00:29:31,771 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 235 flow [2023-11-29 00:29:31,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2023-11-29 00:29:31,772 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-29 00:29:31,772 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 235 flow [2023-11-29 00:29:31,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:31,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:31,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:31,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:29:31,773 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:31,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1866618306, now seen corresponding path program 1 times [2023-11-29 00:29:31,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:31,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205441382] [2023-11-29 00:29:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:31,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:31,815 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 00:29:31,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205441382] [2023-11-29 00:29:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205441382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:31,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662567240] [2023-11-29 00:29:31,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:31,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:31,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:31,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-29 00:29:31,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:31,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:31,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-29 00:29:31,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:32,989 INFO L124 PetriNetUnfolderBase]: 7576/13093 cut-off events. [2023-11-29 00:29:32,989 INFO L125 PetriNetUnfolderBase]: For 1465/1465 co-relation queries the response was YES. [2023-11-29 00:29:33,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25008 conditions, 13093 events. 7576/13093 cut-off events. For 1465/1465 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 101804 event pairs, 3336 based on Foata normal form. 196/11742 useless extension candidates. Maximal degree in co-relation 24995. Up to 6759 conditions per place. [2023-11-29 00:29:33,112 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 75 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-11-29 00:29:33,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 105 transitions, 461 flow [2023-11-29 00:29:33,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:33,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-11-29 00:29:33,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412280701754386 [2023-11-29 00:29:33,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-11-29 00:29:33,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-11-29 00:29:33,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:33,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-11-29 00:29:33,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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 00:29:33,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:33,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:33,116 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 235 flow. Second operand 3 states and 169 transitions. [2023-11-29 00:29:33,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 105 transitions, 461 flow [2023-11-29 00:29:33,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:33,120 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 253 flow [2023-11-29 00:29:33,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-11-29 00:29:33,121 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2023-11-29 00:29:33,121 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 253 flow [2023-11-29 00:29:33,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:33,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:33,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:33,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:29:33,122 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:33,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:33,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2030592192, now seen corresponding path program 1 times [2023-11-29 00:29:33,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:33,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081807451] [2023-11-29 00:29:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:33,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:33,177 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 00:29:33,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081807451] [2023-11-29 00:29:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081807451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:33,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233111623] [2023-11-29 00:29:33,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:33,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:33,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-29 00:29:33,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:33,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:33,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-29 00:29:33,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:34,277 INFO L124 PetriNetUnfolderBase]: 8739/14105 cut-off events. [2023-11-29 00:29:34,278 INFO L125 PetriNetUnfolderBase]: For 2696/2696 co-relation queries the response was YES. [2023-11-29 00:29:34,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29208 conditions, 14105 events. 8739/14105 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 102118 event pairs, 4020 based on Foata normal form. 412/13870 useless extension candidates. Maximal degree in co-relation 29194. Up to 8321 conditions per place. [2023-11-29 00:29:34,350 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 97 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2023-11-29 00:29:34,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 126 transitions, 573 flow [2023-11-29 00:29:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:29:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2023-11-29 00:29:34,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7138157894736842 [2023-11-29 00:29:34,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 217 transitions. [2023-11-29 00:29:34,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 217 transitions. [2023-11-29 00:29:34,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:34,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 217 transitions. [2023-11-29 00:29:34,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:34,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:34,355 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:34,355 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 253 flow. Second operand 4 states and 217 transitions. [2023-11-29 00:29:34,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 126 transitions, 573 flow [2023-11-29 00:29:34,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 126 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:34,362 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 271 flow [2023-11-29 00:29:34,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2023-11-29 00:29:34,363 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2023-11-29 00:29:34,364 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 271 flow [2023-11-29 00:29:34,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:34,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:34,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:34,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:29:34,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:34,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1906121266, now seen corresponding path program 1 times [2023-11-29 00:29:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:34,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737831594] [2023-11-29 00:29:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:34,423 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 00:29:34,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:34,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737831594] [2023-11-29 00:29:34,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737831594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:34,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:34,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:34,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147223148] [2023-11-29 00:29:34,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:34,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:34,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:34,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:34,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-29 00:29:34,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:34,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:34,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-29 00:29:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:35,755 INFO L124 PetriNetUnfolderBase]: 8782/14515 cut-off events. [2023-11-29 00:29:35,755 INFO L125 PetriNetUnfolderBase]: For 6251/6251 co-relation queries the response was YES. [2023-11-29 00:29:35,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32047 conditions, 14515 events. 8782/14515 cut-off events. For 6251/6251 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 105558 event pairs, 4523 based on Foata normal form. 388/14313 useless extension candidates. Maximal degree in co-relation 32031. Up to 8576 conditions per place. [2023-11-29 00:29:35,819 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 100 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-11-29 00:29:35,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 129 transitions, 631 flow [2023-11-29 00:29:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:29:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2023-11-29 00:29:35,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7138157894736842 [2023-11-29 00:29:35,821 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 217 transitions. [2023-11-29 00:29:35,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 217 transitions. [2023-11-29 00:29:35,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:35,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 217 transitions. [2023-11-29 00:29:35,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:35,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:35,823 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:35,823 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 271 flow. Second operand 4 states and 217 transitions. [2023-11-29 00:29:35,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 129 transitions, 631 flow [2023-11-29 00:29:35,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 129 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:29:35,843 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 286 flow [2023-11-29 00:29:35,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-11-29 00:29:35,844 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 17 predicate places. [2023-11-29 00:29:35,844 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 286 flow [2023-11-29 00:29:35,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:35,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:35,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:29:35,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:35,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash -924297639, now seen corresponding path program 1 times [2023-11-29 00:29:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026083892] [2023-11-29 00:29:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:35,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:35,900 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 00:29:35,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:35,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026083892] [2023-11-29 00:29:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026083892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:35,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490027294] [2023-11-29 00:29:35,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:35,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:35,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:35,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:35,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-29 00:29:35,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:35,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:35,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-29 00:29:35,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:37,504 INFO L124 PetriNetUnfolderBase]: 13468/22437 cut-off events. [2023-11-29 00:29:37,504 INFO L125 PetriNetUnfolderBase]: For 11622/11622 co-relation queries the response was YES. [2023-11-29 00:29:37,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50622 conditions, 22437 events. 13468/22437 cut-off events. For 11622/11622 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 174706 event pairs, 5563 based on Foata normal form. 314/21190 useless extension candidates. Maximal degree in co-relation 50604. Up to 10846 conditions per place. [2023-11-29 00:29:37,657 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 78 selfloop transitions, 9 changer transitions 0/114 dead transitions. [2023-11-29 00:29:37,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 570 flow [2023-11-29 00:29:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:29:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2023-11-29 00:29:37,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6710526315789473 [2023-11-29 00:29:37,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 204 transitions. [2023-11-29 00:29:37,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 204 transitions. [2023-11-29 00:29:37,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:37,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 204 transitions. [2023-11-29 00:29:37,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:37,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:37,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:37,661 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 286 flow. Second operand 4 states and 204 transitions. [2023-11-29 00:29:37,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 570 flow [2023-11-29 00:29:37,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:29:37,688 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 325 flow [2023-11-29 00:29:37,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2023-11-29 00:29:37,689 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-11-29 00:29:37,689 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 325 flow [2023-11-29 00:29:37,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:37,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:37,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:37,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:29:37,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:37,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1411543837, now seen corresponding path program 1 times [2023-11-29 00:29:37,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:37,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344649183] [2023-11-29 00:29:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:37,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:37,760 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 00:29:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344649183] [2023-11-29 00:29:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344649183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:37,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:37,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784136912] [2023-11-29 00:29:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:37,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:37,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2023-11-29 00:29:37,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:37,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:37,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2023-11-29 00:29:37,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:39,220 INFO L124 PetriNetUnfolderBase]: 12043/20368 cut-off events. [2023-11-29 00:29:39,220 INFO L125 PetriNetUnfolderBase]: For 11592/11592 co-relation queries the response was YES. [2023-11-29 00:29:39,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48290 conditions, 20368 events. 12043/20368 cut-off events. For 11592/11592 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 160467 event pairs, 8035 based on Foata normal form. 1/19193 useless extension candidates. Maximal degree in co-relation 48270. Up to 15537 conditions per place. [2023-11-29 00:29:39,343 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 52 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-29 00:29:39,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 84 transitions, 425 flow [2023-11-29 00:29:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-29 00:29:39,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6535087719298246 [2023-11-29 00:29:39,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-29 00:29:39,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-29 00:29:39,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:39,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-29 00:29:39,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:39,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:39,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:39,346 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 325 flow. Second operand 3 states and 149 transitions. [2023-11-29 00:29:39,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 84 transitions, 425 flow [2023-11-29 00:29:39,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 84 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:39,376 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 317 flow [2023-11-29 00:29:39,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2023-11-29 00:29:39,376 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2023-11-29 00:29:39,376 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 317 flow [2023-11-29 00:29:39,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:39,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:39,376 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 00:29:39,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:29:39,377 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:39,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:39,377 INFO L85 PathProgramCache]: Analyzing trace with hash -479404817, now seen corresponding path program 2 times [2023-11-29 00:29:39,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585988606] [2023-11-29 00:29:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:39,521 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 00:29:39,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:39,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585988606] [2023-11-29 00:29:39,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585988606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:39,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770686510] [2023-11-29 00:29:39,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:29:39,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:39,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:39,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:39,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:29:39,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:29:39,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:39,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:29:39,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:39,665 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 00:29:39,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:39,700 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 00:29:39,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770686510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:39,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:39,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 00:29:39,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707801050] [2023-11-29 00:29:39,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:39,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:29:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:29:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:29:39,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-29 00:29:39,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 317 flow. Second operand has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:39,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:39,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-29 00:29:39,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:41,667 INFO L124 PetriNetUnfolderBase]: 12044/20371 cut-off events. [2023-11-29 00:29:41,667 INFO L125 PetriNetUnfolderBase]: For 11606/11606 co-relation queries the response was YES. [2023-11-29 00:29:41,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48300 conditions, 20371 events. 12044/20371 cut-off events. For 11606/11606 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 160465 event pairs, 8035 based on Foata normal form. 2/19197 useless extension candidates. Maximal degree in co-relation 48279. Up to 15529 conditions per place. [2023-11-29 00:29:41,808 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 39 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2023-11-29 00:29:41,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 438 flow [2023-11-29 00:29:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:29:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:29:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 541 transitions. [2023-11-29 00:29:41,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084586466165414 [2023-11-29 00:29:41,811 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 541 transitions. [2023-11-29 00:29:41,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 541 transitions. [2023-11-29 00:29:41,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:41,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 541 transitions. [2023-11-29 00:29:41,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 38.642857142857146) internal successors, (541), 14 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:41,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 76.0) internal successors, (1140), 15 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:41,817 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 76.0) internal successors, (1140), 15 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:41,817 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 317 flow. Second operand 14 states and 541 transitions. [2023-11-29 00:29:41,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 438 flow [2023-11-29 00:29:41,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 422 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-29 00:29:41,846 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 344 flow [2023-11-29 00:29:41,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=344, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2023-11-29 00:29:41,847 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 27 predicate places. [2023-11-29 00:29:41,847 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 344 flow [2023-11-29 00:29:41,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:41,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:41,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:41,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:29:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:42,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:42,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1217117428, now seen corresponding path program 1 times [2023-11-29 00:29:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482887063] [2023-11-29 00:29:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:42,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:42,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482887063] [2023-11-29 00:29:42,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482887063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:42,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:42,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:29:42,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766756759] [2023-11-29 00:29:42,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:42,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:29:42,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:42,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:29:42,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:42,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-29 00:29:42,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:42,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:42,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-29 00:29:42,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:44,310 INFO L124 PetriNetUnfolderBase]: 13946/22611 cut-off events. [2023-11-29 00:29:44,310 INFO L125 PetriNetUnfolderBase]: For 14785/14785 co-relation queries the response was YES. [2023-11-29 00:29:44,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54026 conditions, 22611 events. 13946/22611 cut-off events. For 14785/14785 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 169213 event pairs, 1651 based on Foata normal form. 942/23429 useless extension candidates. Maximal degree in co-relation 54009. Up to 9986 conditions per place. [2023-11-29 00:29:44,464 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 99 selfloop transitions, 11 changer transitions 0/134 dead transitions. [2023-11-29 00:29:44,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 738 flow [2023-11-29 00:29:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:29:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:29:44,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2023-11-29 00:29:44,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2023-11-29 00:29:44,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 242 transitions. [2023-11-29 00:29:44,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 242 transitions. [2023-11-29 00:29:44,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:44,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 242 transitions. [2023-11-29 00:29:44,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:44,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:44,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:44,468 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 344 flow. Second operand 5 states and 242 transitions. [2023-11-29 00:29:44,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 738 flow [2023-11-29 00:29:44,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 134 transitions, 678 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-11-29 00:29:44,502 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 300 flow [2023-11-29 00:29:44,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-11-29 00:29:44,502 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-11-29 00:29:44,503 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 300 flow [2023-11-29 00:29:44,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:44,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:44,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:44,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:29:44,503 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:44,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:44,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1217116403, now seen corresponding path program 1 times [2023-11-29 00:29:44,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:44,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512289354] [2023-11-29 00:29:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:44,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:44,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:44,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512289354] [2023-11-29 00:29:44,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512289354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:44,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:44,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787426533] [2023-11-29 00:29:44,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:44,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:44,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:44,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 76 [2023-11-29 00:29:44,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:44,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:44,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 76 [2023-11-29 00:29:44,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:46,051 INFO L124 PetriNetUnfolderBase]: 12604/20787 cut-off events. [2023-11-29 00:29:46,052 INFO L125 PetriNetUnfolderBase]: For 17645/17645 co-relation queries the response was YES. [2023-11-29 00:29:46,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51230 conditions, 20787 events. 12604/20787 cut-off events. For 17645/17645 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 157848 event pairs, 4435 based on Foata normal form. 628/20475 useless extension candidates. Maximal degree in co-relation 51216. Up to 8613 conditions per place. [2023-11-29 00:29:46,152 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 79 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-11-29 00:29:46,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 107 transitions, 546 flow [2023-11-29 00:29:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:29:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2023-11-29 00:29:46,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2023-11-29 00:29:46,154 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 176 transitions. [2023-11-29 00:29:46,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 176 transitions. [2023-11-29 00:29:46,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:46,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 176 transitions. [2023-11-29 00:29:46,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.0) internal successors, (176), 4 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 00:29:46,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:46,156 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:46,156 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 300 flow. Second operand 4 states and 176 transitions. [2023-11-29 00:29:46,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 107 transitions, 546 flow [2023-11-29 00:29:46,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 107 transitions, 508 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 00:29:46,192 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 260 flow [2023-11-29 00:29:46,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-11-29 00:29:46,193 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2023-11-29 00:29:46,193 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 260 flow [2023-11-29 00:29:46,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:46,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:46,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:46,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:29:46,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:46,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1825344454, now seen corresponding path program 1 times [2023-11-29 00:29:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:46,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35901230] [2023-11-29 00:29:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:46,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:46,243 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 00:29:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:46,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35901230] [2023-11-29 00:29:46,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35901230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:46,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472991119] [2023-11-29 00:29:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:46,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:46,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:46,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:46,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:29:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:46,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:29:46,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:46,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472991119] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:46,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:46,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2023-11-29 00:29:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637627203] [2023-11-29 00:29:46,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:46,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:29:46,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:29:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:29:46,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 76 [2023-11-29 00:29:46,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 260 flow. Second operand has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:46,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:46,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 76 [2023-11-29 00:29:46,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:49,969 INFO L124 PetriNetUnfolderBase]: 24362/37510 cut-off events. [2023-11-29 00:29:49,969 INFO L125 PetriNetUnfolderBase]: For 22638/22638 co-relation queries the response was YES. [2023-11-29 00:29:50,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91859 conditions, 37510 events. 24362/37510 cut-off events. For 22638/22638 co-relation queries the response was YES. Maximal size of possible extension queue 1097. Compared 279174 event pairs, 7322 based on Foata normal form. 620/37698 useless extension candidates. Maximal degree in co-relation 91845. Up to 12239 conditions per place. [2023-11-29 00:29:50,140 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 204 selfloop transitions, 22 changer transitions 0/247 dead transitions. [2023-11-29 00:29:50,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 247 transitions, 1292 flow [2023-11-29 00:29:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:29:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:29:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 508 transitions. [2023-11-29 00:29:50,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2023-11-29 00:29:50,142 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 508 transitions. [2023-11-29 00:29:50,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 508 transitions. [2023-11-29 00:29:50,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:50,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 508 transitions. [2023-11-29 00:29:50,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 42.333333333333336) internal successors, (508), 12 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:50,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:50,145 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:50,146 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 260 flow. Second operand 12 states and 508 transitions. [2023-11-29 00:29:50,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 247 transitions, 1292 flow [2023-11-29 00:29:50,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 247 transitions, 1248 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:29:50,201 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 348 flow [2023-11-29 00:29:50,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-11-29 00:29:50,202 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 25 predicate places. [2023-11-29 00:29:50,202 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 348 flow [2023-11-29 00:29:50,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:50,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:50,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:50,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:29:50,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:50,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:50,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash 924065997, now seen corresponding path program 1 times [2023-11-29 00:29:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:50,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158705995] [2023-11-29 00:29:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:50,524 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 00:29:50,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:50,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158705995] [2023-11-29 00:29:50,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158705995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:50,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890223917] [2023-11-29 00:29:50,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:50,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:50,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:50,526 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:50,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:29:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:50,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:29:50,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:50,762 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 00:29:50,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:50,858 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 00:29:50,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890223917] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:50,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:50,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-29 00:29:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181807502] [2023-11-29 00:29:50,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:50,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:29:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:50,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:29:50,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:29:51,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2023-11-29 00:29:51,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 348 flow. Second operand has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:51,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:51,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2023-11-29 00:29:51,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:53,907 INFO L124 PetriNetUnfolderBase]: 23587/36339 cut-off events. [2023-11-29 00:29:53,907 INFO L125 PetriNetUnfolderBase]: For 32429/32429 co-relation queries the response was YES. [2023-11-29 00:29:54,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93726 conditions, 36339 events. 23587/36339 cut-off events. For 32429/32429 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 266681 event pairs, 14425 based on Foata normal form. 0/34395 useless extension candidates. Maximal degree in co-relation 93709. Up to 26224 conditions per place. [2023-11-29 00:29:54,321 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 98 selfloop transitions, 18 changer transitions 14/154 dead transitions. [2023-11-29 00:29:54,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 154 transitions, 872 flow [2023-11-29 00:29:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:29:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:29:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 332 transitions. [2023-11-29 00:29:54,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2023-11-29 00:29:54,323 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 332 transitions. [2023-11-29 00:29:54,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 332 transitions. [2023-11-29 00:29:54,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:54,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 332 transitions. [2023-11-29 00:29:54,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.888888888888886) internal successors, (332), 9 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 00:29:54,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:54,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:54,326 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 348 flow. Second operand 9 states and 332 transitions. [2023-11-29 00:29:54,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 154 transitions, 872 flow [2023-11-29 00:29:54,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 154 transitions, 843 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 00:29:54,382 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 396 flow [2023-11-29 00:29:54,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=396, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2023-11-29 00:29:54,383 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 30 predicate places. [2023-11-29 00:29:54,383 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 396 flow [2023-11-29 00:29:54,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:54,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:54,383 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:54,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:29:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:54,584 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:29:54,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -30866222, now seen corresponding path program 1 times [2023-11-29 00:29:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:54,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859711515] [2023-11-29 00:29:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:54,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:54,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859711515] [2023-11-29 00:29:54,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859711515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:54,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436174011] [2023-11-29 00:29:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:54,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:54,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:54,643 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:54,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:29:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:54,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:29:54,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:54,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436174011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:54,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-11-29 00:29:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620757984] [2023-11-29 00:29:54,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:29:54,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:29:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:29:55,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2023-11-29 00:29:55,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 396 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:55,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:55,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2023-11-29 00:29:55,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:00,086 INFO L124 PetriNetUnfolderBase]: 38581/60724 cut-off events. [2023-11-29 00:30:00,087 INFO L125 PetriNetUnfolderBase]: For 51037/51037 co-relation queries the response was YES. [2023-11-29 00:30:00,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155922 conditions, 60724 events. 38581/60724 cut-off events. For 51037/51037 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 478881 event pairs, 11904 based on Foata normal form. 470/59125 useless extension candidates. Maximal degree in co-relation 155901. Up to 20057 conditions per place. [2023-11-29 00:30:00,456 INFO L140 encePairwiseOnDemand]: 64/76 looper letters, 240 selfloop transitions, 23 changer transitions 13/297 dead transitions. [2023-11-29 00:30:00,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 297 transitions, 1855 flow [2023-11-29 00:30:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:30:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:30:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 542 transitions. [2023-11-29 00:30:00,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548582995951417 [2023-11-29 00:30:00,459 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 542 transitions. [2023-11-29 00:30:00,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 542 transitions. [2023-11-29 00:30:00,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:00,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 542 transitions. [2023-11-29 00:30:00,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.69230769230769) internal successors, (542), 13 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:00,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 76.0) internal successors, (1064), 14 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:00,462 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 76.0) internal successors, (1064), 14 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:00,462 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 396 flow. Second operand 13 states and 542 transitions. [2023-11-29 00:30:00,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 297 transitions, 1855 flow [2023-11-29 00:30:00,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 297 transitions, 1840 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:30:00,543 INFO L231 Difference]: Finished difference. Result has 113 places, 89 transitions, 433 flow [2023-11-29 00:30:00,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=433, PETRI_PLACES=113, PETRI_TRANSITIONS=89} [2023-11-29 00:30:00,544 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 41 predicate places. [2023-11-29 00:30:00,544 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 89 transitions, 433 flow [2023-11-29 00:30:00,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:00,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:00,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:00,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:30:00,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:00,745 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:30:00,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash -66166468, now seen corresponding path program 2 times [2023-11-29 00:30:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109518183] [2023-11-29 00:30:00,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:00,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:00,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:00,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109518183] [2023-11-29 00:30:00,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109518183] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:00,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492956206] [2023-11-29 00:30:00,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:30:00,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:00,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:00,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:00,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:30:00,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:30:00,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:30:00,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:30:00,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:30:01,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:30:01,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492956206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:01,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:30:01,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-11-29 00:30:01,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412765571] [2023-11-29 00:30:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:01,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:01,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:30:01,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 76 [2023-11-29 00:30:01,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 89 transitions, 433 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:01,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:01,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 76 [2023-11-29 00:30:01,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:05,648 INFO L124 PetriNetUnfolderBase]: 28776/45628 cut-off events. [2023-11-29 00:30:05,648 INFO L125 PetriNetUnfolderBase]: For 58518/58518 co-relation queries the response was YES. [2023-11-29 00:30:05,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126316 conditions, 45628 events. 28776/45628 cut-off events. For 58518/58518 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 360038 event pairs, 10431 based on Foata normal form. 1456/45913 useless extension candidates. Maximal degree in co-relation 126291. Up to 19474 conditions per place. [2023-11-29 00:30:05,916 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 108 selfloop transitions, 5 changer transitions 6/146 dead transitions. [2023-11-29 00:30:05,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 146 transitions, 969 flow [2023-11-29 00:30:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:30:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:30:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2023-11-29 00:30:05,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2023-11-29 00:30:05,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 215 transitions. [2023-11-29 00:30:05,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 215 transitions. [2023-11-29 00:30:05,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:05,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 215 transitions. [2023-11-29 00:30:05,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 00:30:05,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:05,920 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:05,920 INFO L175 Difference]: Start difference. First operand has 113 places, 89 transitions, 433 flow. Second operand 5 states and 215 transitions. [2023-11-29 00:30:05,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 146 transitions, 969 flow [2023-11-29 00:30:06,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 867 flow, removed 14 selfloop flow, removed 14 redundant places. [2023-11-29 00:30:06,146 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 368 flow [2023-11-29 00:30:06,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2023-11-29 00:30:06,146 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 26 predicate places. [2023-11-29 00:30:06,146 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 368 flow [2023-11-29 00:30:06,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:06,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:06,147 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:06,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:30:06,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:06,347 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:30:06,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash -239129685, now seen corresponding path program 1 times [2023-11-29 00:30:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:06,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940867860] [2023-11-29 00:30:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:30:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:06,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940867860] [2023-11-29 00:30:06,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940867860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508483591] [2023-11-29 00:30:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:06,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:06,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:06,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:30:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:06,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:30:06,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:06,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:06,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508483591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:06,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:30:06,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2023-11-29 00:30:06,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109671152] [2023-11-29 00:30:06,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:06,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:30:06,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:06,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:30:06,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:30:07,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 76 [2023-11-29 00:30:07,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 368 flow. Second operand has 24 states, 24 states have (on average 28.833333333333332) internal successors, (692), 24 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:07,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:07,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 76 [2023-11-29 00:30:07,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:13,194 INFO L124 PetriNetUnfolderBase]: 40995/62919 cut-off events. [2023-11-29 00:30:13,194 INFO L125 PetriNetUnfolderBase]: For 60087/60087 co-relation queries the response was YES. [2023-11-29 00:30:13,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169672 conditions, 62919 events. 40995/62919 cut-off events. For 60087/60087 co-relation queries the response was YES. Maximal size of possible extension queue 1696. Compared 499729 event pairs, 4440 based on Foata normal form. 2064/64404 useless extension candidates. Maximal degree in co-relation 169652. Up to 15980 conditions per place. [2023-11-29 00:30:13,541 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 257 selfloop transitions, 27 changer transitions 25/332 dead transitions. [2023-11-29 00:30:13,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 332 transitions, 1984 flow [2023-11-29 00:30:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:30:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:30:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 692 transitions. [2023-11-29 00:30:13,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356037151702786 [2023-11-29 00:30:13,545 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 692 transitions. [2023-11-29 00:30:13,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 692 transitions. [2023-11-29 00:30:13,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:13,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 692 transitions. [2023-11-29 00:30:13,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 40.705882352941174) internal successors, (692), 17 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:13,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 76.0) internal successors, (1368), 18 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:13,549 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 76.0) internal successors, (1368), 18 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:13,549 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 368 flow. Second operand 17 states and 692 transitions. [2023-11-29 00:30:13,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 332 transitions, 1984 flow [2023-11-29 00:30:14,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 332 transitions, 1902 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:30:14,151 INFO L231 Difference]: Finished difference. Result has 107 places, 89 transitions, 440 flow [2023-11-29 00:30:14,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=440, PETRI_PLACES=107, PETRI_TRANSITIONS=89} [2023-11-29 00:30:14,151 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2023-11-29 00:30:14,152 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 89 transitions, 440 flow [2023-11-29 00:30:14,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 28.833333333333332) internal successors, (692), 24 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:14,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:14,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:14,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:30:14,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:14,353 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:30:14,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash 912487505, now seen corresponding path program 1 times [2023-11-29 00:30:14,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:14,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748354293] [2023-11-29 00:30:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:14,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:30:14,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748354293] [2023-11-29 00:30:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748354293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213919621] [2023-11-29 00:30:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:14,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:14,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:14,424 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:14,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:30:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:14,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:30:14,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:14,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:14,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213919621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:14,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:30:14,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 23 [2023-11-29 00:30:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213168458] [2023-11-29 00:30:14,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:14,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:30:14,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:30:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:30:15,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2023-11-29 00:30:15,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 89 transitions, 440 flow. Second operand has 23 states, 23 states have (on average 27.608695652173914) internal successors, (635), 23 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:15,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:15,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2023-11-29 00:30:15,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:22,058 INFO L124 PetriNetUnfolderBase]: 40454/63989 cut-off events. [2023-11-29 00:30:22,059 INFO L125 PetriNetUnfolderBase]: For 85354/85354 co-relation queries the response was YES. [2023-11-29 00:30:22,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172989 conditions, 63989 events. 40454/63989 cut-off events. For 85354/85354 co-relation queries the response was YES. Maximal size of possible extension queue 1514. Compared 511750 event pairs, 6569 based on Foata normal form. 1646/65139 useless extension candidates. Maximal degree in co-relation 172968. Up to 14732 conditions per place. [2023-11-29 00:30:22,455 INFO L140 encePairwiseOnDemand]: 64/76 looper letters, 217 selfloop transitions, 24 changer transitions 96/355 dead transitions. [2023-11-29 00:30:22,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 355 transitions, 2361 flow [2023-11-29 00:30:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:30:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 00:30:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 723 transitions. [2023-11-29 00:30:22,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285087719298246 [2023-11-29 00:30:22,459 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 723 transitions. [2023-11-29 00:30:22,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 723 transitions. [2023-11-29 00:30:22,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:22,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 723 transitions. [2023-11-29 00:30:22,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 40.166666666666664) internal successors, (723), 18 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:22,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 76.0) internal successors, (1444), 19 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:22,463 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 76.0) internal successors, (1444), 19 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:22,463 INFO L175 Difference]: Start difference. First operand has 107 places, 89 transitions, 440 flow. Second operand 18 states and 723 transitions. [2023-11-29 00:30:22,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 355 transitions, 2361 flow [2023-11-29 00:30:22,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 355 transitions, 2182 flow, removed 29 selfloop flow, removed 9 redundant places. [2023-11-29 00:30:22,751 INFO L231 Difference]: Finished difference. Result has 114 places, 81 transitions, 399 flow [2023-11-29 00:30:22,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=399, PETRI_PLACES=114, PETRI_TRANSITIONS=81} [2023-11-29 00:30:22,752 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 42 predicate places. [2023-11-29 00:30:22,752 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 81 transitions, 399 flow [2023-11-29 00:30:22,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.608695652173914) internal successors, (635), 23 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:22,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:22,753 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:22,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:30:22,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:22,954 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:30:22,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:22,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1875862749, now seen corresponding path program 1 times [2023-11-29 00:30:22,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:22,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705504089] [2023-11-29 00:30:22,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:22,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:30:23,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705504089] [2023-11-29 00:30:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705504089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469347098] [2023-11-29 00:30:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:23,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:23,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:23,040 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:23,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:30:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:23,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:30:23,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:30:23,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:30:23,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469347098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:23,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:30:23,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 00:30:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944845924] [2023-11-29 00:30:23,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:23,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:30:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:30:23,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:30:23,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-29 00:30:23,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 81 transitions, 399 flow. Second operand has 10 states, 10 states have (on average 35.5) internal successors, (355), 10 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:23,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:23,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-29 00:30:23,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:29,008 INFO L124 PetriNetUnfolderBase]: 35224/54059 cut-off events. [2023-11-29 00:30:29,008 INFO L125 PetriNetUnfolderBase]: For 68013/68013 co-relation queries the response was YES. [2023-11-29 00:30:29,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147986 conditions, 54059 events. 35224/54059 cut-off events. For 68013/68013 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 416348 event pairs, 9719 based on Foata normal form. 1548/54845 useless extension candidates. Maximal degree in co-relation 147964. Up to 18354 conditions per place. [2023-11-29 00:30:29,352 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 193 selfloop transitions, 10 changer transitions 0/224 dead transitions. [2023-11-29 00:30:29,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 224 transitions, 1439 flow [2023-11-29 00:30:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:30:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:30:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 383 transitions. [2023-11-29 00:30:29,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7199248120300752 [2023-11-29 00:30:29,354 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 383 transitions. [2023-11-29 00:30:29,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 383 transitions. [2023-11-29 00:30:29,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:29,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 383 transitions. [2023-11-29 00:30:29,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:29,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:29,357 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:29,358 INFO L175 Difference]: Start difference. First operand has 114 places, 81 transitions, 399 flow. Second operand 7 states and 383 transitions. [2023-11-29 00:30:29,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 224 transitions, 1439 flow [2023-11-29 00:30:29,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 224 transitions, 1249 flow, removed 29 selfloop flow, removed 16 redundant places. [2023-11-29 00:30:29,540 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 381 flow [2023-11-29 00:30:29,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2023-11-29 00:30:29,540 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 29 predicate places. [2023-11-29 00:30:29,540 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 381 flow [2023-11-29 00:30:29,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.5) internal successors, (355), 10 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:29,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:29,540 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:29,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:30:29,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 00:30:29,741 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:30:29,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:29,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1899701571, now seen corresponding path program 1 times [2023-11-29 00:30:29,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:29,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188501705] [2023-11-29 00:30:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:30:29,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188501705] [2023-11-29 00:30:29,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188501705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066023541] [2023-11-29 00:30:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:29,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:29,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:29,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:29,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:30:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:29,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:30:29,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:30:29,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:30:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066023541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:29,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:30:29,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 00:30:29,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155668581] [2023-11-29 00:30:29,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:29,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:30:29,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:29,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:30:29,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:30:30,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-29 00:30:30,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 381 flow. Second operand has 10 states, 10 states have (on average 35.3) internal successors, (353), 10 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:30,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:30,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-29 00:30:30,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:36,829 INFO L124 PetriNetUnfolderBase]: 43627/70614 cut-off events. [2023-11-29 00:30:36,829 INFO L125 PetriNetUnfolderBase]: For 104625/105107 co-relation queries the response was YES. [2023-11-29 00:30:37,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187575 conditions, 70614 events. 43627/70614 cut-off events. For 104625/105107 co-relation queries the response was YES. Maximal size of possible extension queue 1452. Compared 580115 event pairs, 11706 based on Foata normal form. 1722/71471 useless extension candidates. Maximal degree in co-relation 187556. Up to 24469 conditions per place. [2023-11-29 00:30:37,260 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 217 selfloop transitions, 10 changer transitions 0/247 dead transitions. [2023-11-29 00:30:37,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 247 transitions, 1684 flow [2023-11-29 00:30:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:30:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:30:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 383 transitions. [2023-11-29 00:30:37,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7199248120300752 [2023-11-29 00:30:37,262 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 383 transitions. [2023-11-29 00:30:37,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 383 transitions. [2023-11-29 00:30:37,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:37,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 383 transitions. [2023-11-29 00:30:37,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:37,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:37,263 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:37,264 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 381 flow. Second operand 7 states and 383 transitions. [2023-11-29 00:30:37,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 247 transitions, 1684 flow [2023-11-29 00:30:37,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 247 transitions, 1577 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-29 00:30:37,484 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 401 flow [2023-11-29 00:30:37,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2023-11-29 00:30:37,485 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 34 predicate places. [2023-11-29 00:30:37,485 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 401 flow [2023-11-29 00:30:37,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.3) internal successors, (353), 10 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:37,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:37,485 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:37,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:30:37,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:30:37,686 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:30:37,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash -462395018, now seen corresponding path program 1 times [2023-11-29 00:30:37,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:37,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454852094] [2023-11-29 00:30:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:37,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:37,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:37,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454852094] [2023-11-29 00:30:37,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454852094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:37,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172173758] [2023-11-29 00:30:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:37,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:37,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:37,922 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:37,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:30:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:38,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:30:38,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:38,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172173758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:38,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:30:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2023-11-29 00:30:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706495205] [2023-11-29 00:30:38,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 00:30:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 00:30:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:30:38,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 76 [2023-11-29 00:30:38,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 401 flow. Second operand has 37 states, 37 states have (on average 28.405405405405407) internal successors, (1051), 37 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:38,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:38,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 76 [2023-11-29 00:30:38,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:50,174 INFO L124 PetriNetUnfolderBase]: 66623/104562 cut-off events. [2023-11-29 00:30:50,174 INFO L125 PetriNetUnfolderBase]: For 159466/160163 co-relation queries the response was YES. [2023-11-29 00:30:50,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295360 conditions, 104562 events. 66623/104562 cut-off events. For 159466/160163 co-relation queries the response was YES. Maximal size of possible extension queue 2272. Compared 885975 event pairs, 34342 based on Foata normal form. 620/102802 useless extension candidates. Maximal degree in co-relation 295339. Up to 57919 conditions per place. [2023-11-29 00:30:51,051 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 207 selfloop transitions, 21 changer transitions 36/284 dead transitions. [2023-11-29 00:30:51,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 284 transitions, 1904 flow [2023-11-29 00:30:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:30:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 00:30:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 608 transitions. [2023-11-29 00:30:51,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-29 00:30:51,054 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 608 transitions. [2023-11-29 00:30:51,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 608 transitions. [2023-11-29 00:30:51,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:51,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 608 transitions. [2023-11-29 00:30:51,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 38.0) internal successors, (608), 16 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:51,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 76.0) internal successors, (1292), 17 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:51,059 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 76.0) internal successors, (1292), 17 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:51,059 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 401 flow. Second operand 16 states and 608 transitions. [2023-11-29 00:30:51,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 284 transitions, 1904 flow [2023-11-29 00:30:52,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 284 transitions, 1855 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-29 00:30:52,792 INFO L231 Difference]: Finished difference. Result has 125 places, 95 transitions, 534 flow [2023-11-29 00:30:52,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=534, PETRI_PLACES=125, PETRI_TRANSITIONS=95} [2023-11-29 00:30:52,792 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 53 predicate places. [2023-11-29 00:30:52,793 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 95 transitions, 534 flow [2023-11-29 00:30:52,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 28.405405405405407) internal successors, (1051), 37 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:52,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:52,793 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:52,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:30:52,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:52,994 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:30:52,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash 786070373, now seen corresponding path program 2 times [2023-11-29 00:30:52,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:52,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710099916] [2023-11-29 00:30:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:52,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:30:53,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710099916] [2023-11-29 00:30:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710099916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92830593] [2023-11-29 00:30:53,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:30:53,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:53,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:53,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:53,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:30:53,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:30:53,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:30:53,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:30:53,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 00:30:53,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 00:30:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92830593] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:53,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:30:53,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 3] total 15 [2023-11-29 00:30:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657219650] [2023-11-29 00:30:53,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:53,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:30:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:53,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:30:53,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:30:53,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-29 00:30:53,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 95 transitions, 534 flow. Second operand has 17 states, 17 states have (on average 35.0) internal successors, (595), 17 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:53,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:53,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-29 00:30:53,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:31:11,080 INFO L124 PetriNetUnfolderBase]: 97900/149794 cut-off events. [2023-11-29 00:31:11,080 INFO L125 PetriNetUnfolderBase]: For 268717/269780 co-relation queries the response was YES. [2023-11-29 00:31:11,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448869 conditions, 149794 events. 97900/149794 cut-off events. For 268717/269780 co-relation queries the response was YES. Maximal size of possible extension queue 3224. Compared 1280908 event pairs, 12211 based on Foata normal form. 3720/152206 useless extension candidates. Maximal degree in co-relation 448840. Up to 38426 conditions per place. [2023-11-29 00:31:12,130 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 239 selfloop transitions, 44 changer transitions 54/357 dead transitions. [2023-11-29 00:31:12,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 357 transitions, 2474 flow [2023-11-29 00:31:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:31:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 00:31:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 881 transitions. [2023-11-29 00:31:12,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796052631578947 [2023-11-29 00:31:12,133 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 881 transitions. [2023-11-29 00:31:12,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 881 transitions. [2023-11-29 00:31:12,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:31:12,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 881 transitions. [2023-11-29 00:31:12,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 44.05) internal successors, (881), 20 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:12,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 76.0) internal successors, (1596), 21 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:12,139 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 76.0) internal successors, (1596), 21 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:12,139 INFO L175 Difference]: Start difference. First operand has 125 places, 95 transitions, 534 flow. Second operand 20 states and 881 transitions. [2023-11-29 00:31:12,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 357 transitions, 2474 flow [2023-11-29 00:31:21,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 357 transitions, 2405 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-11-29 00:31:21,100 INFO L231 Difference]: Finished difference. Result has 131 places, 101 transitions, 654 flow [2023-11-29 00:31:21,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=654, PETRI_PLACES=131, PETRI_TRANSITIONS=101} [2023-11-29 00:31:21,101 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 59 predicate places. [2023-11-29 00:31:21,101 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 101 transitions, 654 flow [2023-11-29 00:31:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 35.0) internal successors, (595), 17 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:21,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:31:21,102 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-29 00:31:21,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 00:31:21,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:31:21,303 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:31:21,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:21,303 INFO L85 PathProgramCache]: Analyzing trace with hash -764401190, now seen corresponding path program 1 times [2023-11-29 00:31:21,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:21,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133440751] [2023-11-29 00:31:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:21,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:31:21,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133440751] [2023-11-29 00:31:21,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133440751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:31:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126498297] [2023-11-29 00:31:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:21,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:21,518 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:21,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:31:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:21,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:31:21,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:31:21,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:31:22,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126498297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:22,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:31:22,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2023-11-29 00:31:22,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8112751] [2023-11-29 00:31:22,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:22,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 00:31:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 00:31:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 00:31:22,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2023-11-29 00:31:22,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 101 transitions, 654 flow. Second operand has 36 states, 36 states have (on average 27.305555555555557) internal successors, (983), 36 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:22,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:31:22,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2023-11-29 00:31:22,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:31:40,548 INFO L124 PetriNetUnfolderBase]: 99651/152672 cut-off events. [2023-11-29 00:31:40,548 INFO L125 PetriNetUnfolderBase]: For 383052/383052 co-relation queries the response was YES. [2023-11-29 00:31:41,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473324 conditions, 152672 events. 99651/152672 cut-off events. For 383052/383052 co-relation queries the response was YES. Maximal size of possible extension queue 2839. Compared 1280311 event pairs, 52143 based on Foata normal form. 366/151462 useless extension candidates. Maximal degree in co-relation 473297. Up to 95806 conditions per place. [2023-11-29 00:31:41,688 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 62 selfloop transitions, 12 changer transitions 271/360 dead transitions. [2023-11-29 00:31:41,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 360 transitions, 2976 flow [2023-11-29 00:31:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:31:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 00:31:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 723 transitions. [2023-11-29 00:31:41,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006925207756233 [2023-11-29 00:31:41,690 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 723 transitions. [2023-11-29 00:31:41,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 723 transitions. [2023-11-29 00:31:41,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:31:41,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 723 transitions. [2023-11-29 00:31:41,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 38.05263157894737) internal successors, (723), 19 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:41,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 76.0) internal successors, (1520), 20 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:41,693 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 76.0) internal successors, (1520), 20 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:41,693 INFO L175 Difference]: Start difference. First operand has 131 places, 101 transitions, 654 flow. Second operand 19 states and 723 transitions. [2023-11-29 00:31:41,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 360 transitions, 2976 flow [2023-11-29 00:31:45,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 360 transitions, 2927 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-11-29 00:31:45,932 INFO L231 Difference]: Finished difference. Result has 140 places, 89 transitions, 532 flow [2023-11-29 00:31:45,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=532, PETRI_PLACES=140, PETRI_TRANSITIONS=89} [2023-11-29 00:31:45,932 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 68 predicate places. [2023-11-29 00:31:45,932 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 89 transitions, 532 flow [2023-11-29 00:31:45,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 27.305555555555557) internal successors, (983), 36 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:45,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:31:45,933 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-11-29 00:31:45,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:31:46,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:31:46,133 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 00:31:46,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash -728650679, now seen corresponding path program 2 times [2023-11-29 00:31:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:46,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147451048] [2023-11-29 00:31:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:46,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:31:46,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147451048] [2023-11-29 00:31:46,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147451048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:31:46,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72016762] [2023-11-29 00:31:46,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:31:46,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:46,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:46,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:46,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:31:46,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:31:46,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:31:46,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:31:46,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 00:31:46,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 00:31:46,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72016762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:46,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:31:46,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 13 [2023-11-29 00:31:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203749793] [2023-11-29 00:31:46,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:46,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:31:46,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:31:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:31:46,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2023-11-29 00:31:46,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 89 transitions, 532 flow. Second operand has 14 states, 14 states have (on average 29.142857142857142) internal successors, (408), 14 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:46,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:31:46,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2023-11-29 00:31:46,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:04,456 INFO L124 PetriNetUnfolderBase]: 101029/156970 cut-off events. [2023-11-29 00:32:04,457 INFO L125 PetriNetUnfolderBase]: For 400019/400019 co-relation queries the response was YES. [2023-11-29 00:32:05,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477675 conditions, 156970 events. 101029/156970 cut-off events. For 400019/400019 co-relation queries the response was YES. Maximal size of possible extension queue 2456. Compared 1312079 event pairs, 2001 based on Foata normal form. 5176/162118 useless extension candidates. Maximal degree in co-relation 477642. Up to 26934 conditions per place. [2023-11-29 00:32:05,195 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 0 selfloop transitions, 0 changer transitions 507/507 dead transitions. [2023-11-29 00:32:05,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 507 transitions, 4430 flow [2023-11-29 00:32:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:32:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:32:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 547 transitions. [2023-11-29 00:32:05,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5997807017543859 [2023-11-29 00:32:05,196 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 547 transitions. [2023-11-29 00:32:05,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 547 transitions. [2023-11-29 00:32:05,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:05,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 547 transitions. [2023-11-29 00:32:05,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 45.583333333333336) internal successors, (547), 12 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:05,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:05,199 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:05,199 INFO L175 Difference]: Start difference. First operand has 140 places, 89 transitions, 532 flow. Second operand 12 states and 547 transitions. [2023-11-29 00:32:05,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 507 transitions, 4430 flow [2023-11-29 00:32:08,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 507 transitions, 4128 flow, removed 130 selfloop flow, removed 25 redundant places. [2023-11-29 00:32:08,970 INFO L231 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2023-11-29 00:32:08,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2023-11-29 00:32:08,971 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 34 predicate places. [2023-11-29 00:32:08,971 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2023-11-29 00:32:08,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 29.142857142857142) internal successors, (408), 14 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:08,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 37 remaining) [2023-11-29 00:32:08,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-11-29 00:32:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 37 remaining) [2023-11-29 00:32:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-11-29 00:32:08,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-11-29 00:32:08,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-11-29 00:32:08,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-11-29 00:32:08,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-11-29 00:32:08,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-11-29 00:32:08,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-11-29 00:32:08,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-11-29 00:32:08,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:32:09,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:32:09,178 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:09,182 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:32:09,183 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:32:09,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:32:09 BasicIcfg [2023-11-29 00:32:09,187 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:32:09,188 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:32:09,188 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:32:09,188 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:32:09,188 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:26" (3/4) ... [2023-11-29 00:32:09,189 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:32:09,192 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 00:32:09,192 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 00:32:09,192 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 00:32:09,198 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 100 nodes and edges [2023-11-29 00:32:09,198 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-29 00:32:09,199 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-29 00:32:09,199 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 00:32:09,276 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:32:09,277 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:32:09,277 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:32:09,278 INFO L158 Benchmark]: Toolchain (without parser) took 163793.43ms. Allocated memory was 148.9MB in the beginning and 13.3GB in the end (delta: 13.1GB). Free memory was 117.5MB in the beginning and 5.8GB in the end (delta: -5.6GB). Peak memory consumption was 7.5GB. Max. memory is 16.1GB. [2023-11-29 00:32:09,278 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 119.5MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:32:09,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.65ms. Allocated memory is still 148.9MB. Free memory was 117.5MB in the beginning and 105.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:32:09,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.59ms. Allocated memory is still 148.9MB. Free memory was 105.7MB in the beginning and 103.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:32:09,279 INFO L158 Benchmark]: Boogie Preprocessor took 41.62ms. Allocated memory is still 148.9MB. Free memory was 103.6MB in the beginning and 100.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:32:09,280 INFO L158 Benchmark]: RCFGBuilder took 688.14ms. Allocated memory is still 148.9MB. Free memory was 100.8MB in the beginning and 74.9MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 00:32:09,280 INFO L158 Benchmark]: TraceAbstraction took 162689.07ms. Allocated memory was 148.9MB in the beginning and 13.3GB in the end (delta: 13.1GB). Free memory was 74.2MB in the beginning and 5.8GB in the end (delta: -5.7GB). Peak memory consumption was 8.1GB. Max. memory is 16.1GB. [2023-11-29 00:32:09,280 INFO L158 Benchmark]: Witness Printer took 89.58ms. Allocated memory is still 13.3GB. Free memory was 5.8GB in the beginning and 5.8GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:32:09,282 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 119.5MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.65ms. Allocated memory is still 148.9MB. Free memory was 117.5MB in the beginning and 105.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.59ms. Allocated memory is still 148.9MB. Free memory was 105.7MB in the beginning and 103.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.62ms. Allocated memory is still 148.9MB. Free memory was 103.6MB in the beginning and 100.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 688.14ms. Allocated memory is still 148.9MB. Free memory was 100.8MB in the beginning and 74.9MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 162689.07ms. Allocated memory was 148.9MB in the beginning and 13.3GB in the end (delta: 13.1GB). Free memory was 74.2MB in the beginning and 5.8GB in the end (delta: -5.7GB). Peak memory consumption was 8.1GB. Max. memory is 16.1GB. * Witness Printer took 89.58ms. Allocated memory is still 13.3GB. Free memory was 5.8GB in the beginning and 5.8GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: 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: 47]: 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: 47]: 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: 55]: 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: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: 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: 63]: 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: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: 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, 120 locations, 37 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: 162.6s, OverallIterations: 26, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 152.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5838 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5511 mSDsluCounter, 4037 SdHoareTripleChecker+Invalid, 8.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3925 mSDsCounter, 190 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20084 IncrementalHoareTripleChecker+Invalid, 20274 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 190 mSolverCounterUnsat, 112 mSDtfsCounter, 20084 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 831 GetRequests, 475 SyntacticMatches, 11 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=654occurred in iteration=24, InterpolantAutomatonStates: 223, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 769 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1021 ConstructedInterpolants, 0 QuantifiedInterpolants, 3738 SizeOfPredicates, 61 NumberOfNonLiveVariables, 2268 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 53 InterpolantComputations, 13 PerfectInterpolantSequences, 416/708 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 00:32:09,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4150e531-86d9-4918-8af7-217c3bbdd667/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