./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme --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 c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:54:50,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:54:50,447 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:54:50,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:54:50,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:54:50,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:54:50,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:54:50,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:54:50,520 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:54:50,520 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:54:50,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:54:50,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:54:50,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:54:50,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:54:50,545 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:54:50,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:54:50,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:54:50,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:54:50,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:54:50,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:54:50,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:54:50,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:54:50,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:54:50,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:54:50,553 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:54:50,554 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:54:50,554 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:54:50,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:54:50,555 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:54:50,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:54:50,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:54:50,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:54:50,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:54:50,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:50,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:54:50,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:54:50,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:54:50,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:54:50,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:54:50,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:54:50,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:54:50,562 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:54:50,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:54:50,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:54:50,563 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_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf [2023-11-26 11:54:50,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:54:50,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:54:51,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:54:51,002 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:54:51,002 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:54:51,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-26 11:54:54,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:54:54,845 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:54:54,846 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-26 11:54:54,862 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/data/a312e9d1a/6fed3bbd66724965b500836997d7e453/FLAGacf9bd4a1 [2023-11-26 11:54:54,887 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/data/a312e9d1a/6fed3bbd66724965b500836997d7e453 [2023-11-26 11:54:54,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:54:54,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:54:54,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:54,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:54:54,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:54:54,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:54" (1/1) ... [2023-11-26 11:54:54,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570917a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:54, skipping insertion in model container [2023-11-26 11:54:54,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:54" (1/1) ... [2023-11-26 11:54:54,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:54:55,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:55,198 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:54:55,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:55,256 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:54:55,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55 WrapperNode [2023-11-26 11:54:55,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:55,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:55,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:54:55,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:54:55,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,336 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 507 [2023-11-26 11:54:55,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:55,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:54:55,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:54:55,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:54:55,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,382 INFO L175 MemorySlicer]: Split 32 memory accesses to 6 slices as follows [2, 9, 15, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 3, 3, 1, 1, 1]. [2023-11-26 11:54:55,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:54:55,436 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:54:55,436 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:54:55,436 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:54:55,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (1/1) ... [2023-11-26 11:54:55,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:55,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:55,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:54:55,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:54:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:54:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:54:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:54:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:54:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:54:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:54:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:54:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:54:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:54:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:54:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:54:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:54:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:54:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:54:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:54:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:54:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:54:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:54:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:54:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:54:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:54:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:54:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:54:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:54:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:54:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:54:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:54:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:54:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:54:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:54:55,595 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:54:55,812 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:54:55,815 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:54:56,846 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:54:57,699 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:54:57,699 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 11:54:57,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:57 BoogieIcfgContainer [2023-11-26 11:54:57,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:54:57,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:54:57,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:54:57,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:54:57,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:54:54" (1/3) ... [2023-11-26 11:54:57,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8bcc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:57, skipping insertion in model container [2023-11-26 11:54:57,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:55" (2/3) ... [2023-11-26 11:54:57,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8bcc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:57, skipping insertion in model container [2023-11-26 11:54:57,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:57" (3/3) ... [2023-11-26 11:54:57,717 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-11-26 11:54:57,730 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:54:57,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:54:57,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-26 11:54:57,745 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:54:57,949 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:54:58,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 305 flow [2023-11-26 11:54:58,173 INFO L124 PetriNetUnfolderBase]: 15/139 cut-off events. [2023-11-26 11:54:58,173 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:54:58,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 15/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 396 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-11-26 11:54:58,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 142 transitions, 305 flow [2023-11-26 11:54:58,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 137 transitions, 289 flow [2023-11-26 11:54:58,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:54:58,229 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;@39096ea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:54:58,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-26 11:54:58,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:54:58,236 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-26 11:54:58,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:54:58,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:58,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:54:58,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:54:58,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:58,246 INFO L85 PathProgramCache]: Analyzing trace with hash 47336, now seen corresponding path program 1 times [2023-11-26 11:54:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:58,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141690712] [2023-11-26 11:54:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:58,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:58,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:58,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141690712] [2023-11-26 11:54:58,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141690712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:58,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:58,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:54:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39288656] [2023-11-26 11:54:58,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:58,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:58,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:58,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:58,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:54:58,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 137 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:58,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:58,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:54:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:00,758 INFO L124 PetriNetUnfolderBase]: 4342/8325 cut-off events. [2023-11-26 11:55:00,758 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2023-11-26 11:55:00,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14341 conditions, 8325 events. 4342/8325 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68127 event pairs, 2884 based on Foata normal form. 2/6656 useless extension candidates. Maximal degree in co-relation 13014. Up to 5797 conditions per place. [2023-11-26 11:55:00,853 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 63 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2023-11-26 11:55:00,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 135 transitions, 413 flow [2023-11-26 11:55:00,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:55:00,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-11-26 11:55:00,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676056338028169 [2023-11-26 11:55:00,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-11-26 11:55:00,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-11-26 11:55:00,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:00,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-11-26 11:55:00,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:00,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:00,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:00,901 INFO L175 Difference]: Start difference. First operand has 132 places, 137 transitions, 289 flow. Second operand 3 states and 288 transitions. [2023-11-26 11:55:00,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 135 transitions, 413 flow [2023-11-26 11:55:00,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 135 transitions, 404 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:55:00,924 INFO L231 Difference]: Finished difference. Result has 127 places, 135 transitions, 278 flow [2023-11-26 11:55:00,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=127, PETRI_TRANSITIONS=135} [2023-11-26 11:55:00,931 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2023-11-26 11:55:00,932 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 135 transitions, 278 flow [2023-11-26 11:55:00,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:00,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:00,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:55:00,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:00,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:00,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1468977, now seen corresponding path program 1 times [2023-11-26 11:55:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:00,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630166932] [2023-11-26 11:55:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:01,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:01,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630166932] [2023-11-26 11:55:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630166932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:01,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:01,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:55:01,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190674077] [2023-11-26 11:55:01,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:01,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:01,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:01,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:01,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:01,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 135 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:01,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:01,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:01,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:02,279 INFO L124 PetriNetUnfolderBase]: 4342/8323 cut-off events. [2023-11-26 11:55:02,279 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-26 11:55:02,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14256 conditions, 8323 events. 4342/8323 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 68312 event pairs, 2884 based on Foata normal form. 0/6654 useless extension candidates. Maximal degree in co-relation 14250. Up to 5795 conditions per place. [2023-11-26 11:55:02,367 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 61 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2023-11-26 11:55:02,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 133 transitions, 398 flow [2023-11-26 11:55:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:55:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-11-26 11:55:02,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6713615023474179 [2023-11-26 11:55:02,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-11-26 11:55:02,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-11-26 11:55:02,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:02,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-11-26 11:55:02,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:02,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:02,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:02,376 INFO L175 Difference]: Start difference. First operand has 127 places, 135 transitions, 278 flow. Second operand 3 states and 286 transitions. [2023-11-26 11:55:02,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 133 transitions, 398 flow [2023-11-26 11:55:02,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 133 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:55:02,381 INFO L231 Difference]: Finished difference. Result has 126 places, 133 transitions, 275 flow [2023-11-26 11:55:02,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=126, PETRI_TRANSITIONS=133} [2023-11-26 11:55:02,383 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2023-11-26 11:55:02,383 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 133 transitions, 275 flow [2023-11-26 11:55:02,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:02,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:02,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:55:02,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:55:02,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:02,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1411736867, now seen corresponding path program 1 times [2023-11-26 11:55:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:02,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467167785] [2023-11-26 11:55:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:02,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:02,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:02,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467167785] [2023-11-26 11:55:02,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467167785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:02,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:02,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:02,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099406598] [2023-11-26 11:55:02,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:02,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:02,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:02,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-26 11:55:02,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 133 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:02,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:02,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-26 11:55:02,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:04,010 INFO L124 PetriNetUnfolderBase]: 4345/8335 cut-off events. [2023-11-26 11:55:04,010 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-26 11:55:04,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14284 conditions, 8335 events. 4345/8335 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 68420 event pairs, 2884 based on Foata normal form. 3/6666 useless extension candidates. Maximal degree in co-relation 14277. Up to 5805 conditions per place. [2023-11-26 11:55:04,083 INFO L140 encePairwiseOnDemand]: 124/142 looper letters, 65 selfloop transitions, 12 changer transitions 0/142 dead transitions. [2023-11-26 11:55:04,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 142 transitions, 447 flow [2023-11-26 11:55:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2023-11-26 11:55:04,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.653169014084507 [2023-11-26 11:55:04,086 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2023-11-26 11:55:04,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2023-11-26 11:55:04,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:04,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2023-11-26 11:55:04,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:04,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:04,091 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:04,092 INFO L175 Difference]: Start difference. First operand has 126 places, 133 transitions, 275 flow. Second operand 4 states and 371 transitions. [2023-11-26 11:55:04,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 142 transitions, 447 flow [2023-11-26 11:55:04,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 142 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:55:04,097 INFO L231 Difference]: Finished difference. Result has 130 places, 142 transitions, 361 flow [2023-11-26 11:55:04,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=130, PETRI_TRANSITIONS=142} [2023-11-26 11:55:04,098 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2023-11-26 11:55:04,098 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 142 transitions, 361 flow [2023-11-26 11:55:04,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:04,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:04,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:55:04,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:55:04,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:04,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1411736958, now seen corresponding path program 1 times [2023-11-26 11:55:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:04,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084821332] [2023-11-26 11:55:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:04,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:04,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:04,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084821332] [2023-11-26 11:55:04,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084821332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:04,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:04,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:55:04,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231056810] [2023-11-26 11:55:04,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:04,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:04,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:04,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:04,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:04,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:04,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 142 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:04,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:04,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:04,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:05,542 INFO L124 PetriNetUnfolderBase]: 4345/8333 cut-off events. [2023-11-26 11:55:05,543 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-26 11:55:05,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14316 conditions, 8333 events. 4345/8333 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 68359 event pairs, 2884 based on Foata normal form. 2/6670 useless extension candidates. Maximal degree in co-relation 14307. Up to 5806 conditions per place. [2023-11-26 11:55:05,622 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 72 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2023-11-26 11:55:05,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 140 transitions, 503 flow [2023-11-26 11:55:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:55:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-11-26 11:55:05,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676056338028169 [2023-11-26 11:55:05,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-11-26 11:55:05,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-11-26 11:55:05,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:05,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-11-26 11:55:05,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:05,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:05,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:05,631 INFO L175 Difference]: Start difference. First operand has 130 places, 142 transitions, 361 flow. Second operand 3 states and 288 transitions. [2023-11-26 11:55:05,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 140 transitions, 503 flow [2023-11-26 11:55:05,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 140 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:55:05,637 INFO L231 Difference]: Finished difference. Result has 129 places, 140 transitions, 350 flow [2023-11-26 11:55:05,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=129, PETRI_TRANSITIONS=140} [2023-11-26 11:55:05,639 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -3 predicate places. [2023-11-26 11:55:05,639 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 140 transitions, 350 flow [2023-11-26 11:55:05,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:05,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:05,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:55:05,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:55:05,641 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:05,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:05,641 INFO L85 PathProgramCache]: Analyzing trace with hash 814174268, now seen corresponding path program 1 times [2023-11-26 11:55:05,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:05,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406509013] [2023-11-26 11:55:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406509013] [2023-11-26 11:55:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406509013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:05,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:05,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:55:05,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025368421] [2023-11-26 11:55:05,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:05,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:05,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:05,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:05,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:05,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 140 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:05,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:05,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:05,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:06,956 INFO L124 PetriNetUnfolderBase]: 4345/8331 cut-off events. [2023-11-26 11:55:06,957 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-26 11:55:06,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14307 conditions, 8331 events. 4345/8331 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 68344 event pairs, 2884 based on Foata normal form. 1/6668 useless extension candidates. Maximal degree in co-relation 14297. Up to 5804 conditions per place. [2023-11-26 11:55:07,040 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 70 selfloop transitions, 1 changer transitions 0/138 dead transitions. [2023-11-26 11:55:07,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 138 transitions, 488 flow [2023-11-26 11:55:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:55:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-11-26 11:55:07,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6713615023474179 [2023-11-26 11:55:07,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-11-26 11:55:07,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-11-26 11:55:07,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:07,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-11-26 11:55:07,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:07,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:07,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:07,049 INFO L175 Difference]: Start difference. First operand has 129 places, 140 transitions, 350 flow. Second operand 3 states and 286 transitions. [2023-11-26 11:55:07,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 138 transitions, 488 flow [2023-11-26 11:55:07,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 138 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:55:07,056 INFO L231 Difference]: Finished difference. Result has 128 places, 138 transitions, 347 flow [2023-11-26 11:55:07,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=128, PETRI_TRANSITIONS=138} [2023-11-26 11:55:07,060 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2023-11-26 11:55:07,060 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 138 transitions, 347 flow [2023-11-26 11:55:07,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:07,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:07,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:07,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:55:07,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:07,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash 737471123, now seen corresponding path program 1 times [2023-11-26 11:55:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:07,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486858047] [2023-11-26 11:55:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:07,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:07,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486858047] [2023-11-26 11:55:07,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486858047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:07,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:07,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:55:07,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563556982] [2023-11-26 11:55:07,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:07,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:07,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:07,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:07,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:07,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:07,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 138 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:07,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:07,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:07,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:08,264 INFO L124 PetriNetUnfolderBase]: 4345/8329 cut-off events. [2023-11-26 11:55:08,264 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-26 11:55:08,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14308 conditions, 8329 events. 4345/8329 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 68355 event pairs, 2884 based on Foata normal form. 2/6668 useless extension candidates. Maximal degree in co-relation 14297. Up to 5806 conditions per place. [2023-11-26 11:55:08,342 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 72 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2023-11-26 11:55:08,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 136 transitions, 489 flow [2023-11-26 11:55:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:55:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-11-26 11:55:08,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676056338028169 [2023-11-26 11:55:08,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-11-26 11:55:08,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-11-26 11:55:08,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:08,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-11-26 11:55:08,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:08,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:08,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:08,349 INFO L175 Difference]: Start difference. First operand has 128 places, 138 transitions, 347 flow. Second operand 3 states and 288 transitions. [2023-11-26 11:55:08,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 136 transitions, 489 flow [2023-11-26 11:55:08,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 136 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:55:08,353 INFO L231 Difference]: Finished difference. Result has 127 places, 136 transitions, 344 flow [2023-11-26 11:55:08,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=127, PETRI_TRANSITIONS=136} [2023-11-26 11:55:08,357 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2023-11-26 11:55:08,357 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 136 transitions, 344 flow [2023-11-26 11:55:08,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:08,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:08,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:08,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:55:08,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:08,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:08,359 INFO L85 PathProgramCache]: Analyzing trace with hash 734766509, now seen corresponding path program 1 times [2023-11-26 11:55:08,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:08,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010285103] [2023-11-26 11:55:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:08,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010285103] [2023-11-26 11:55:08,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010285103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:08,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216941419] [2023-11-26 11:55:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:08,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:08,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:08,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:08,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:55:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:08,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:55:08,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:08,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:08,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216941419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:08,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:55:08,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 11:55:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76140675] [2023-11-26 11:55:08,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:08,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:08,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-26 11:55:08,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 136 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:08,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:08,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-26 11:55:08,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:09,972 INFO L124 PetriNetUnfolderBase]: 4345/8326 cut-off events. [2023-11-26 11:55:09,972 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-26 11:55:10,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14304 conditions, 8326 events. 4345/8326 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68279 event pairs, 2884 based on Foata normal form. 3/6664 useless extension candidates. Maximal degree in co-relation 14292. Up to 5790 conditions per place. [2023-11-26 11:55:10,049 INFO L140 encePairwiseOnDemand]: 127/142 looper letters, 53 selfloop transitions, 21 changer transitions 0/133 dead transitions. [2023-11-26 11:55:10,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 133 transitions, 480 flow [2023-11-26 11:55:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:55:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 509 transitions. [2023-11-26 11:55:10,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5974178403755869 [2023-11-26 11:55:10,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 509 transitions. [2023-11-26 11:55:10,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 509 transitions. [2023-11-26 11:55:10,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:10,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 509 transitions. [2023-11-26 11:55:10,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:10,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:10,059 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:10,059 INFO L175 Difference]: Start difference. First operand has 127 places, 136 transitions, 344 flow. Second operand 6 states and 509 transitions. [2023-11-26 11:55:10,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 133 transitions, 480 flow [2023-11-26 11:55:10,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 133 transitions, 479 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:55:10,063 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 373 flow [2023-11-26 11:55:10,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=373, PETRI_PLACES=128, PETRI_TRANSITIONS=133} [2023-11-26 11:55:10,064 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2023-11-26 11:55:10,065 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 373 flow [2023-11-26 11:55:10,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:10,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:10,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:10,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:10,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:10,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:10,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1386769882, now seen corresponding path program 1 times [2023-11-26 11:55:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:10,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802914471] [2023-11-26 11:55:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:10,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:10,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:10,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802914471] [2023-11-26 11:55:10,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802914471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:10,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:10,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:55:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034922784] [2023-11-26 11:55:10,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:10,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:10,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:10,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:10,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:10,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:10,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 133 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:10,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:10,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:10,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:11,421 INFO L124 PetriNetUnfolderBase]: 4345/8324 cut-off events. [2023-11-26 11:55:11,421 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-26 11:55:11,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14320 conditions, 8324 events. 4345/8324 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68326 event pairs, 2884 based on Foata normal form. 1/6663 useless extension candidates. Maximal degree in co-relation 14308. Up to 5804 conditions per place. [2023-11-26 11:55:11,494 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 70 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2023-11-26 11:55:11,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 131 transitions, 511 flow [2023-11-26 11:55:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:55:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-11-26 11:55:11,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6713615023474179 [2023-11-26 11:55:11,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-11-26 11:55:11,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-11-26 11:55:11,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:11,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-11-26 11:55:11,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:11,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:11,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:11,501 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 373 flow. Second operand 3 states and 286 transitions. [2023-11-26 11:55:11,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 131 transitions, 511 flow [2023-11-26 11:55:11,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 131 transitions, 466 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-26 11:55:11,507 INFO L231 Difference]: Finished difference. Result has 124 places, 131 transitions, 326 flow [2023-11-26 11:55:11,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=124, PETRI_TRANSITIONS=131} [2023-11-26 11:55:11,508 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, -8 predicate places. [2023-11-26 11:55:11,508 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 131 transitions, 326 flow [2023-11-26 11:55:11,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:11,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:11,509 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-26 11:55:11,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:55:11,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:11,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1302926833, now seen corresponding path program 1 times [2023-11-26 11:55:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:11,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45066425] [2023-11-26 11:55:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:11,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45066425] [2023-11-26 11:55:11,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45066425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650573971] [2023-11-26 11:55:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:11,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:11,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:11,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:11,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:55:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:11,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:55:11,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:11,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:11,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650573971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:11,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:55:11,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 11:55:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065577681] [2023-11-26 11:55:11,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:55:11,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:11,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:55:11,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:55:11,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-26 11:55:11,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 131 transitions, 326 flow. Second operand has 12 states, 12 states have (on average 73.16666666666667) internal successors, (878), 12 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:11,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:11,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-26 11:55:11,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:13,255 INFO L124 PetriNetUnfolderBase]: 4354/8360 cut-off events. [2023-11-26 11:55:13,256 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-11-26 11:55:13,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14389 conditions, 8360 events. 4354/8360 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68420 event pairs, 2884 based on Foata normal form. 9/6698 useless extension candidates. Maximal degree in co-relation 14377. Up to 5811 conditions per place. [2023-11-26 11:55:13,314 INFO L140 encePairwiseOnDemand]: 127/142 looper letters, 62 selfloop transitions, 39 changer transitions 0/158 dead transitions. [2023-11-26 11:55:13,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 158 transitions, 645 flow [2023-11-26 11:55:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:55:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 830 transitions. [2023-11-26 11:55:13,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845070422535211 [2023-11-26 11:55:13,319 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 830 transitions. [2023-11-26 11:55:13,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 830 transitions. [2023-11-26 11:55:13,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:13,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 830 transitions. [2023-11-26 11:55:13,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:13,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:13,329 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:13,329 INFO L175 Difference]: Start difference. First operand has 124 places, 131 transitions, 326 flow. Second operand 10 states and 830 transitions. [2023-11-26 11:55:13,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 158 transitions, 645 flow [2023-11-26 11:55:13,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 158 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:55:13,335 INFO L231 Difference]: Finished difference. Result has 135 places, 158 transitions, 574 flow [2023-11-26 11:55:13,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=574, PETRI_PLACES=135, PETRI_TRANSITIONS=158} [2023-11-26 11:55:13,336 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 3 predicate places. [2023-11-26 11:55:13,336 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 158 transitions, 574 flow [2023-11-26 11:55:13,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.16666666666667) internal successors, (878), 12 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:13,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:13,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:13,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:13,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:13,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash -475822265, now seen corresponding path program 1 times [2023-11-26 11:55:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044013137] [2023-11-26 11:55:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:13,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:13,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044013137] [2023-11-26 11:55:13,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044013137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:13,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354903175] [2023-11-26 11:55:13,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:13,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:13,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-26 11:55:13,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 158 transitions, 574 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:13,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:13,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-26 11:55:13,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:14,787 INFO L124 PetriNetUnfolderBase]: 4357/8372 cut-off events. [2023-11-26 11:55:14,787 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2023-11-26 11:55:14,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14482 conditions, 8372 events. 4357/8372 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68613 event pairs, 2884 based on Foata normal form. 3/6710 useless extension candidates. Maximal degree in co-relation 14467. Up to 5841 conditions per place. [2023-11-26 11:55:14,872 INFO L140 encePairwiseOnDemand]: 124/142 looper letters, 101 selfloop transitions, 12 changer transitions 0/167 dead transitions. [2023-11-26 11:55:14,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 167 transitions, 818 flow [2023-11-26 11:55:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:14,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2023-11-26 11:55:14,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.653169014084507 [2023-11-26 11:55:14,874 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2023-11-26 11:55:14,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2023-11-26 11:55:14,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:14,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2023-11-26 11:55:14,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:14,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:14,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:14,879 INFO L175 Difference]: Start difference. First operand has 135 places, 158 transitions, 574 flow. Second operand 4 states and 371 transitions. [2023-11-26 11:55:14,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 167 transitions, 818 flow [2023-11-26 11:55:14,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 167 transitions, 785 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-26 11:55:14,890 INFO L231 Difference]: Finished difference. Result has 138 places, 167 transitions, 628 flow [2023-11-26 11:55:14,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=628, PETRI_PLACES=138, PETRI_TRANSITIONS=167} [2023-11-26 11:55:14,892 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 6 predicate places. [2023-11-26 11:55:14,892 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 167 transitions, 628 flow [2023-11-26 11:55:14,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:14,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:14,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:55:14,894 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:14,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1827465974, now seen corresponding path program 1 times [2023-11-26 11:55:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:14,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535293337] [2023-11-26 11:55:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:15,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:15,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535293337] [2023-11-26 11:55:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535293337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:15,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:15,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:15,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413456920] [2023-11-26 11:55:15,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:15,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:15,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:15,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:15,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:15,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:15,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 167 transitions, 628 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:15,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:15,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:15,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:16,027 INFO L124 PetriNetUnfolderBase]: 4356/8371 cut-off events. [2023-11-26 11:55:16,027 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-11-26 11:55:16,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14497 conditions, 8371 events. 4356/8371 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68526 event pairs, 2884 based on Foata normal form. 1/6713 useless extension candidates. Maximal degree in co-relation 14479. Up to 5837 conditions per place. [2023-11-26 11:55:16,110 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 103 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2023-11-26 11:55:16,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 166 transitions, 836 flow [2023-11-26 11:55:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-11-26 11:55:16,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355633802816901 [2023-11-26 11:55:16,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-11-26 11:55:16,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-11-26 11:55:16,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:16,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-11-26 11:55:16,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:16,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:16,124 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:16,124 INFO L175 Difference]: Start difference. First operand has 138 places, 167 transitions, 628 flow. Second operand 4 states and 361 transitions. [2023-11-26 11:55:16,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 166 transitions, 836 flow [2023-11-26 11:55:16,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 166 transitions, 827 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:55:16,134 INFO L231 Difference]: Finished difference. Result has 140 places, 166 transitions, 621 flow [2023-11-26 11:55:16,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=140, PETRI_TRANSITIONS=166} [2023-11-26 11:55:16,135 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 8 predicate places. [2023-11-26 11:55:16,135 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 166 transitions, 621 flow [2023-11-26 11:55:16,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:16,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:16,135 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2023-11-26 11:55:16,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:55:16,136 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:16,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1944416837, now seen corresponding path program 2 times [2023-11-26 11:55:16,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:16,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703468562] [2023-11-26 11:55:16,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:16,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:16,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703468562] [2023-11-26 11:55:16,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703468562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933143396] [2023-11-26 11:55:16,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:55:16,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:16,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:16,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:16,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:55:16,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:55:16,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:55:16,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:55:16,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:55:16,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:55:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933143396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:16,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:55:16,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 13 [2023-11-26 11:55:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327417131] [2023-11-26 11:55:16,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:16,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:55:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:16,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:55:16,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:55:16,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-26 11:55:16,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 166 transitions, 621 flow. Second operand has 14 states, 14 states have (on average 73.21428571428571) internal successors, (1025), 14 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:16,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:16,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-26 11:55:16,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:18,047 INFO L124 PetriNetUnfolderBase]: 4359/8380 cut-off events. [2023-11-26 11:55:18,047 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-11-26 11:55:18,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14518 conditions, 8380 events. 4359/8380 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68602 event pairs, 2884 based on Foata normal form. 6/6724 useless extension candidates. Maximal degree in co-relation 14499. Up to 5810 conditions per place. [2023-11-26 11:55:18,121 INFO L140 encePairwiseOnDemand]: 127/142 looper letters, 59 selfloop transitions, 56 changer transitions 0/172 dead transitions. [2023-11-26 11:55:18,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 172 transitions, 878 flow [2023-11-26 11:55:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:55:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 11:55:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1120 transitions. [2023-11-26 11:55:18,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633802816901409 [2023-11-26 11:55:18,128 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1120 transitions. [2023-11-26 11:55:18,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1120 transitions. [2023-11-26 11:55:18,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:18,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1120 transitions. [2023-11-26 11:55:18,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 80.0) internal successors, (1120), 14 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:18,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:18,140 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:18,140 INFO L175 Difference]: Start difference. First operand has 140 places, 166 transitions, 621 flow. Second operand 14 states and 1120 transitions. [2023-11-26 11:55:18,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 172 transitions, 878 flow [2023-11-26 11:55:18,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 172 transitions, 838 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-26 11:55:18,147 INFO L231 Difference]: Finished difference. Result has 144 places, 172 transitions, 720 flow [2023-11-26 11:55:18,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=720, PETRI_PLACES=144, PETRI_TRANSITIONS=172} [2023-11-26 11:55:18,148 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 12 predicate places. [2023-11-26 11:55:18,148 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 172 transitions, 720 flow [2023-11-26 11:55:18,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 73.21428571428571) internal successors, (1025), 14 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:18,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:18,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:18,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:18,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:18,355 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:18,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1979373204, now seen corresponding path program 1 times [2023-11-26 11:55:18,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:18,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556852893] [2023-11-26 11:55:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:18,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:55:18,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:18,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556852893] [2023-11-26 11:55:18,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556852893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:18,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:18,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137544371] [2023-11-26 11:55:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:18,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:18,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:18,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:18,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:18,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 172 transitions, 720 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:18,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:18,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:18,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:19,380 INFO L124 PetriNetUnfolderBase]: 4358/8379 cut-off events. [2023-11-26 11:55:19,380 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-11-26 11:55:19,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14546 conditions, 8379 events. 4358/8379 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68591 event pairs, 2884 based on Foata normal form. 0/6707 useless extension candidates. Maximal degree in co-relation 14532. Up to 5845 conditions per place. [2023-11-26 11:55:19,442 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 111 selfloop transitions, 3 changer transitions 0/171 dead transitions. [2023-11-26 11:55:19,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 171 transitions, 942 flow [2023-11-26 11:55:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-11-26 11:55:19,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355633802816901 [2023-11-26 11:55:19,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-11-26 11:55:19,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-11-26 11:55:19,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:19,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-11-26 11:55:19,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:19,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:19,450 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:19,450 INFO L175 Difference]: Start difference. First operand has 144 places, 172 transitions, 720 flow. Second operand 4 states and 361 transitions. [2023-11-26 11:55:19,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 171 transitions, 942 flow [2023-11-26 11:55:19,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 171 transitions, 735 flow, removed 18 selfloop flow, removed 12 redundant places. [2023-11-26 11:55:19,457 INFO L231 Difference]: Finished difference. Result has 135 places, 171 transitions, 513 flow [2023-11-26 11:55:19,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=513, PETRI_PLACES=135, PETRI_TRANSITIONS=171} [2023-11-26 11:55:19,458 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 3 predicate places. [2023-11-26 11:55:19,458 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 171 transitions, 513 flow [2023-11-26 11:55:19,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:19,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:19,459 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:19,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:55:19,459 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:19,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:19,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1413225610, now seen corresponding path program 1 times [2023-11-26 11:55:19,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:19,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677416079] [2023-11-26 11:55:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:19,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:55:19,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677416079] [2023-11-26 11:55:19,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677416079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:19,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:19,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:19,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403245192] [2023-11-26 11:55:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:19,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:19,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:19,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:19,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:19,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 171 transitions, 513 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:19,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:19,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:19,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:20,469 INFO L124 PetriNetUnfolderBase]: 4357/8378 cut-off events. [2023-11-26 11:55:20,470 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-26 11:55:20,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14442 conditions, 8378 events. 4357/8378 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68500 event pairs, 2884 based on Foata normal form. 0/6707 useless extension candidates. Maximal degree in co-relation 14428. Up to 5844 conditions per place. [2023-11-26 11:55:20,548 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 110 selfloop transitions, 3 changer transitions 0/170 dead transitions. [2023-11-26 11:55:20,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 170 transitions, 736 flow [2023-11-26 11:55:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-11-26 11:55:20,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355633802816901 [2023-11-26 11:55:20,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-11-26 11:55:20,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-11-26 11:55:20,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:20,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-11-26 11:55:20,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:20,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:20,555 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:20,555 INFO L175 Difference]: Start difference. First operand has 135 places, 171 transitions, 513 flow. Second operand 4 states and 361 transitions. [2023-11-26 11:55:20,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 170 transitions, 736 flow [2023-11-26 11:55:20,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 170 transitions, 732 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:55:20,560 INFO L231 Difference]: Finished difference. Result has 136 places, 170 transitions, 512 flow [2023-11-26 11:55:20,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=512, PETRI_PLACES=136, PETRI_TRANSITIONS=170} [2023-11-26 11:55:20,561 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 4 predicate places. [2023-11-26 11:55:20,561 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 170 transitions, 512 flow [2023-11-26 11:55:20,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:20,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:20,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:20,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:55:20,562 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:20,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1130722253, now seen corresponding path program 1 times [2023-11-26 11:55:20,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:20,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665652345] [2023-11-26 11:55:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:20,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:55:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665652345] [2023-11-26 11:55:20,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665652345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464177170] [2023-11-26 11:55:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:20,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:20,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:20,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:20,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:55:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:20,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:55:20,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:55:20,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:20,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464177170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:20,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:55:20,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 11:55:20,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173751649] [2023-11-26 11:55:20,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:20,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:20,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-26 11:55:20,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 170 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:20,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:20,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-26 11:55:20,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:21,935 INFO L124 PetriNetUnfolderBase]: 4357/8375 cut-off events. [2023-11-26 11:55:21,935 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-26 11:55:21,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14440 conditions, 8375 events. 4357/8375 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68484 event pairs, 2884 based on Foata normal form. 3/6704 useless extension candidates. Maximal degree in co-relation 14426. Up to 5832 conditions per place. [2023-11-26 11:55:21,976 INFO L140 encePairwiseOnDemand]: 127/142 looper letters, 95 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2023-11-26 11:55:21,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 167 transitions, 732 flow [2023-11-26 11:55:21,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:55:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 509 transitions. [2023-11-26 11:55:21,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5974178403755869 [2023-11-26 11:55:21,979 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 509 transitions. [2023-11-26 11:55:21,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 509 transitions. [2023-11-26 11:55:21,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:21,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 509 transitions. [2023-11-26 11:55:21,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:21,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:21,984 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:21,985 INFO L175 Difference]: Start difference. First operand has 136 places, 170 transitions, 512 flow. Second operand 6 states and 509 transitions. [2023-11-26 11:55:21,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 167 transitions, 732 flow [2023-11-26 11:55:21,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 167 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:55:21,990 INFO L231 Difference]: Finished difference. Result has 136 places, 167 transitions, 538 flow [2023-11-26 11:55:21,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=136, PETRI_TRANSITIONS=167} [2023-11-26 11:55:21,991 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 4 predicate places. [2023-11-26 11:55:21,991 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 167 transitions, 538 flow [2023-11-26 11:55:21,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:21,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:21,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:22,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:22,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:22,197 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:22,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash -692649907, now seen corresponding path program 1 times [2023-11-26 11:55:22,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:22,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17164869] [2023-11-26 11:55:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:22,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:55:22,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:22,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17164869] [2023-11-26 11:55:22,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17164869] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:22,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034229290] [2023-11-26 11:55:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:22,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:22,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:22,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:22,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:55:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:22,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:55:22,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:55:22,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:55:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034229290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:22,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:55:22,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 11:55:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997819806] [2023-11-26 11:55:22,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:22,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:55:22,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:22,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:55:22,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:55:22,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-26 11:55:22,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 167 transitions, 538 flow. Second operand has 12 states, 12 states have (on average 74.16666666666667) internal successors, (890), 12 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:22,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:22,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-26 11:55:22,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:23,716 INFO L124 PetriNetUnfolderBase]: 4366/8411 cut-off events. [2023-11-26 11:55:23,716 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-26 11:55:23,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14576 conditions, 8411 events. 4366/8411 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68808 event pairs, 2884 based on Foata normal form. 9/6740 useless extension candidates. Maximal degree in co-relation 14563. Up to 5853 conditions per place. [2023-11-26 11:55:23,768 INFO L140 encePairwiseOnDemand]: 127/142 looper letters, 104 selfloop transitions, 39 changer transitions 0/194 dead transitions. [2023-11-26 11:55:23,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 194 transitions, 986 flow [2023-11-26 11:55:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:55:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 830 transitions. [2023-11-26 11:55:23,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845070422535211 [2023-11-26 11:55:23,774 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 830 transitions. [2023-11-26 11:55:23,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 830 transitions. [2023-11-26 11:55:23,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:23,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 830 transitions. [2023-11-26 11:55:23,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,782 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,782 INFO L175 Difference]: Start difference. First operand has 136 places, 167 transitions, 538 flow. Second operand 10 states and 830 transitions. [2023-11-26 11:55:23,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 194 transitions, 986 flow [2023-11-26 11:55:23,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 194 transitions, 896 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-11-26 11:55:23,789 INFO L231 Difference]: Finished difference. Result has 144 places, 194 transitions, 742 flow [2023-11-26 11:55:23,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=742, PETRI_PLACES=144, PETRI_TRANSITIONS=194} [2023-11-26 11:55:23,790 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 12 predicate places. [2023-11-26 11:55:23,790 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 194 transitions, 742 flow [2023-11-26 11:55:23,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 74.16666666666667) internal successors, (890), 12 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:23,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:23,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:23,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:23,997 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:23,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash -336411500, now seen corresponding path program 1 times [2023-11-26 11:55:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:23,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481464306] [2023-11-26 11:55:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:55:24,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:24,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481464306] [2023-11-26 11:55:24,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481464306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:24,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:24,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:24,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324379279] [2023-11-26 11:55:24,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:24,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:24,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:24,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:24,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:24,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-26 11:55:24,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 194 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:24,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:24,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-26 11:55:24,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:25,646 INFO L124 PetriNetUnfolderBase]: 8297/14347 cut-off events. [2023-11-26 11:55:25,646 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2023-11-26 11:55:25,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25914 conditions, 14347 events. 8297/14347 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 114897 event pairs, 2793 based on Foata normal form. 364/12076 useless extension candidates. Maximal degree in co-relation 25899. Up to 5418 conditions per place. [2023-11-26 11:55:25,746 INFO L140 encePairwiseOnDemand]: 134/142 looper letters, 190 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2023-11-26 11:55:25,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 243 transitions, 1236 flow [2023-11-26 11:55:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2023-11-26 11:55:25,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183098591549296 [2023-11-26 11:55:25,749 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 408 transitions. [2023-11-26 11:55:25,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 408 transitions. [2023-11-26 11:55:25,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:25,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 408 transitions. [2023-11-26 11:55:25,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.0) internal successors, (408), 4 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) [2023-11-26 11:55:25,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:25,754 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:25,754 INFO L175 Difference]: Start difference. First operand has 144 places, 194 transitions, 742 flow. Second operand 4 states and 408 transitions. [2023-11-26 11:55:25,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 243 transitions, 1236 flow [2023-11-26 11:55:25,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 243 transitions, 1203 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-26 11:55:25,762 INFO L231 Difference]: Finished difference. Result has 147 places, 196 transitions, 743 flow [2023-11-26 11:55:25,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=743, PETRI_PLACES=147, PETRI_TRANSITIONS=196} [2023-11-26 11:55:25,763 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 15 predicate places. [2023-11-26 11:55:25,763 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 196 transitions, 743 flow [2023-11-26 11:55:25,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:25,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:25,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:25,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:55:25,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:25,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1838820300, now seen corresponding path program 1 times [2023-11-26 11:55:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385052408] [2023-11-26 11:55:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:25,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:26,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385052408] [2023-11-26 11:55:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385052408] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034612685] [2023-11-26 11:55:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:26,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:26,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:26,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:55:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:26,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:55:26,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:55:26,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034612685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:55:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-26 11:55:26,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164546196] [2023-11-26 11:55:26,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:26,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:26,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:26,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:26,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:26,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:26,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 196 transitions, 743 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:26,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:26,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:26,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:27,449 INFO L124 PetriNetUnfolderBase]: 5410/10670 cut-off events. [2023-11-26 11:55:27,449 INFO L125 PetriNetUnfolderBase]: For 1952/2218 co-relation queries the response was YES. [2023-11-26 11:55:27,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19764 conditions, 10670 events. 5410/10670 cut-off events. For 1952/2218 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 92823 event pairs, 3656 based on Foata normal form. 136/8840 useless extension candidates. Maximal degree in co-relation 19746. Up to 7279 conditions per place. [2023-11-26 11:55:27,542 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 138 selfloop transitions, 3 changer transitions 0/195 dead transitions. [2023-11-26 11:55:27,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 195 transitions, 1021 flow [2023-11-26 11:55:27,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-11-26 11:55:27,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355633802816901 [2023-11-26 11:55:27,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-11-26 11:55:27,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-11-26 11:55:27,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:27,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-11-26 11:55:27,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:27,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:27,548 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:27,548 INFO L175 Difference]: Start difference. First operand has 147 places, 196 transitions, 743 flow. Second operand 4 states and 361 transitions. [2023-11-26 11:55:27,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 195 transitions, 1021 flow [2023-11-26 11:55:27,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 195 transitions, 1021 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:55:27,581 INFO L231 Difference]: Finished difference. Result has 150 places, 195 transitions, 745 flow [2023-11-26 11:55:27,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=745, PETRI_PLACES=150, PETRI_TRANSITIONS=195} [2023-11-26 11:55:27,582 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 18 predicate places. [2023-11-26 11:55:27,582 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 195 transitions, 745 flow [2023-11-26 11:55:27,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:27,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:27,583 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:27,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:27,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:55:27,789 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:27,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash 783308130, now seen corresponding path program 2 times [2023-11-26 11:55:27,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:27,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639053662] [2023-11-26 11:55:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-26 11:55:28,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:28,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639053662] [2023-11-26 11:55:28,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639053662] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:28,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099785534] [2023-11-26 11:55:28,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:55:28,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:28,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:28,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:28,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:55:28,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:55:28,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:55:28,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:55:28,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 11:55:28,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 11:55:28,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099785534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:28,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:55:28,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2023-11-26 11:55:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374243967] [2023-11-26 11:55:28,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:28,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:55:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:55:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:55:28,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 142 [2023-11-26 11:55:28,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 195 transitions, 745 flow. Second operand has 12 states, 12 states have (on average 65.08333333333333) internal successors, (781), 12 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:28,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:28,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 142 [2023-11-26 11:55:28,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:31,634 INFO L124 PetriNetUnfolderBase]: 10614/20989 cut-off events. [2023-11-26 11:55:31,635 INFO L125 PetriNetUnfolderBase]: For 3795/4333 co-relation queries the response was YES. [2023-11-26 11:55:31,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38664 conditions, 20989 events. 10614/20989 cut-off events. For 3795/4333 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 202074 event pairs, 7176 based on Foata normal form. 278/17559 useless extension candidates. Maximal degree in co-relation 38644. Up to 7227 conditions per place. [2023-11-26 11:55:31,859 INFO L140 encePairwiseOnDemand]: 122/142 looper letters, 163 selfloop transitions, 89 changer transitions 0/303 dead transitions. [2023-11-26 11:55:31,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 303 transitions, 1671 flow [2023-11-26 11:55:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:55:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 11:55:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 998 transitions. [2023-11-26 11:55:31,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020120724346077 [2023-11-26 11:55:31,865 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 998 transitions. [2023-11-26 11:55:31,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 998 transitions. [2023-11-26 11:55:31,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:31,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 998 transitions. [2023-11-26 11:55:31,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 71.28571428571429) internal successors, (998), 14 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:31,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:31,875 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:31,875 INFO L175 Difference]: Start difference. First operand has 150 places, 195 transitions, 745 flow. Second operand 14 states and 998 transitions. [2023-11-26 11:55:31,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 303 transitions, 1671 flow [2023-11-26 11:55:31,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 303 transitions, 1613 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-26 11:55:31,901 INFO L231 Difference]: Finished difference. Result has 154 places, 228 transitions, 1049 flow [2023-11-26 11:55:31,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1049, PETRI_PLACES=154, PETRI_TRANSITIONS=228} [2023-11-26 11:55:31,902 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 22 predicate places. [2023-11-26 11:55:31,902 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 228 transitions, 1049 flow [2023-11-26 11:55:31,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.08333333333333) internal successors, (781), 12 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:31,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:31,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:31,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:32,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:32,104 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:32,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash -430799457, now seen corresponding path program 1 times [2023-11-26 11:55:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:32,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680208133] [2023-11-26 11:55:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:55:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:32,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680208133] [2023-11-26 11:55:32,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680208133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:32,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:32,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223777802] [2023-11-26 11:55:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:32,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:32,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:32,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 228 transitions, 1049 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:32,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:32,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:32,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:34,479 INFO L124 PetriNetUnfolderBase]: 10808/21291 cut-off events. [2023-11-26 11:55:34,479 INFO L125 PetriNetUnfolderBase]: For 3926/4458 co-relation queries the response was YES. [2023-11-26 11:55:34,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39428 conditions, 21291 events. 10808/21291 cut-off events. For 3926/4458 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 204555 event pairs, 7312 based on Foata normal form. 270/17619 useless extension candidates. Maximal degree in co-relation 39412. Up to 14526 conditions per place. [2023-11-26 11:55:34,697 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 170 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2023-11-26 11:55:34,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 226 transitions, 1387 flow [2023-11-26 11:55:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:34,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-11-26 11:55:34,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355633802816901 [2023-11-26 11:55:34,703 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-11-26 11:55:34,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-11-26 11:55:34,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:34,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-11-26 11:55:34,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:34,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:34,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:34,707 INFO L175 Difference]: Start difference. First operand has 154 places, 228 transitions, 1049 flow. Second operand 4 states and 361 transitions. [2023-11-26 11:55:34,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 226 transitions, 1387 flow [2023-11-26 11:55:34,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 226 transitions, 1384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:55:34,763 INFO L231 Difference]: Finished difference. Result has 155 places, 226 transitions, 1044 flow [2023-11-26 11:55:34,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1044, PETRI_PLACES=155, PETRI_TRANSITIONS=226} [2023-11-26 11:55:34,765 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 23 predicate places. [2023-11-26 11:55:34,765 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 226 transitions, 1044 flow [2023-11-26 11:55:34,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:34,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:34,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:34,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:55:34,766 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:34,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1808759468, now seen corresponding path program 1 times [2023-11-26 11:55:34,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:34,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034476927] [2023-11-26 11:55:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:34,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:55:34,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034476927] [2023-11-26 11:55:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034476927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:34,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:34,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:34,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304635250] [2023-11-26 11:55:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:34,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:34,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:34,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 142 [2023-11-26 11:55:34,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 226 transitions, 1044 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:34,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:34,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 142 [2023-11-26 11:55:34,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:37,357 INFO L124 PetriNetUnfolderBase]: 10806/21289 cut-off events. [2023-11-26 11:55:37,357 INFO L125 PetriNetUnfolderBase]: For 3935/4467 co-relation queries the response was YES. [2023-11-26 11:55:37,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39424 conditions, 21289 events. 10806/21289 cut-off events. For 3935/4467 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 204409 event pairs, 7312 based on Foata normal form. 270/17619 useless extension candidates. Maximal degree in co-relation 39407. Up to 14524 conditions per place. [2023-11-26 11:55:37,571 INFO L140 encePairwiseOnDemand]: 138/142 looper letters, 168 selfloop transitions, 5 changer transitions 0/224 dead transitions. [2023-11-26 11:55:37,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 224 transitions, 1378 flow [2023-11-26 11:55:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-11-26 11:55:37,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355633802816901 [2023-11-26 11:55:37,573 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-11-26 11:55:37,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-11-26 11:55:37,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:37,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-11-26 11:55:37,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:37,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:37,577 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:37,577 INFO L175 Difference]: Start difference. First operand has 155 places, 226 transitions, 1044 flow. Second operand 4 states and 361 transitions. [2023-11-26 11:55:37,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 224 transitions, 1378 flow [2023-11-26 11:55:37,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 224 transitions, 1372 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:55:37,614 INFO L231 Difference]: Finished difference. Result has 156 places, 224 transitions, 1036 flow [2023-11-26 11:55:37,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1036, PETRI_PLACES=156, PETRI_TRANSITIONS=224} [2023-11-26 11:55:37,615 INFO L281 CegarLoopForPetriNet]: 132 programPoint places, 24 predicate places. [2023-11-26 11:55:37,616 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 224 transitions, 1036 flow [2023-11-26 11:55:37,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:37,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:37,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:55:37,617 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-11-26 11:55:37,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:37,618 INFO L85 PathProgramCache]: Analyzing trace with hash -350402006, now seen corresponding path program 1 times [2023-11-26 11:55:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897480566] [2023-11-26 11:55:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:55:38,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:38,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897480566] [2023-11-26 11:55:38,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897480566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:38,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890924624] [2023-11-26 11:55:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:38,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:38,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:38,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:38,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490ae861-cae8-4449-8244-f2db7e978205/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:55:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-26 11:55:38,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:39,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 11:55:39,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:55:39,187 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-26 11:55:39,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-26 11:55:39,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 11:55:39,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 11:55:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:55:39,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:39,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:55:39,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-26 11:55:39,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:55:39,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-26 11:55:39,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-26 11:55:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:55:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890924624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:39,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:55:39,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 11:55:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274616463] [2023-11-26 11:55:39,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:39,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:55:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:55:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=282, Unknown=1, NotChecked=0, Total=342 [2023-11-26 11:55:40,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-11-26 11:55:40,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 224 transitions, 1036 flow. Second operand has 19 states, 19 states have (on average 57.578947368421055) internal successors, (1094), 19 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:40,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:40,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-11-26 11:55:40,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand