./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:20:20,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:20:20,448 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:20:20,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:20:20,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:20:20,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:20:20,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:20:20,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:20:20,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:20:20,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:20:20,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:20:20,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:20:20,517 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:20:20,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:20:20,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:20:20,520 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:20:20,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:20:20,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:20:20,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:20:20,521 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:20:20,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:20:20,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:20:20,523 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:20:20,523 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:20:20,524 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:20:20,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:20:20,524 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:20:20,525 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:20:20,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:20:20,526 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:20:20,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:20:20,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:20:20,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:20:20,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:20:20,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:20:20,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:20:20,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:20:20,530 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:20:20,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:20:20,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:20:20,530 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:20:20,531 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_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2023-11-06 22:20:20,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:20:20,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:20:20,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:20:20,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:20:20,861 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:20:20,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-06 22:20:24,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:20:24,327 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:20:24,328 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-06 22:20:24,338 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/data/07b7b3e51/135afe266730488aa46d93e4e1a5a4a5/FLAGf10075fcf [2023-11-06 22:20:24,356 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/data/07b7b3e51/135afe266730488aa46d93e4e1a5a4a5 [2023-11-06 22:20:24,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:20:24,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:20:24,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:20:24,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:20:24,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:20:24,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619f492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24, skipping insertion in model container [2023-11-06 22:20:24,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,427 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:20:24,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:20:24,628 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:20:24,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:20:24,681 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:20:24,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24 WrapperNode [2023-11-06 22:20:24,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:20:24,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:20:24,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:20:24,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:20:24,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,739 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 195 [2023-11-06 22:20:24,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:20:24,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:20:24,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:20:24,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:20:24,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:20:24,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:20:24,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:20:24,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:20:24,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (1/1) ... [2023-11-06 22:20:24,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:20:24,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:24,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:20:24,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:20:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:20:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:20:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:20:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:20:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:20:24,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:20:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:20:24,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:20:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:20:24,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:20:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:20:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:20:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:20:24,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:20:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:20:24,866 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:20:24,989 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:20:24,991 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:20:25,532 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:20:25,545 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:20:25,546 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:20:25,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:25 BoogieIcfgContainer [2023-11-06 22:20:25,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:20:25,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:20:25,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:20:25,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:20:25,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:20:24" (1/3) ... [2023-11-06 22:20:25,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36eb5448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:25, skipping insertion in model container [2023-11-06 22:20:25,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:24" (2/3) ... [2023-11-06 22:20:25,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36eb5448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:25, skipping insertion in model container [2023-11-06 22:20:25,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:25" (3/3) ... [2023-11-06 22:20:25,559 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-06 22:20:25,568 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:20:25,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:20:25,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-06 22:20:25,581 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:20:25,736 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:20:25,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 359 transitions, 739 flow [2023-11-06 22:20:25,964 INFO L124 PetriNetUnfolderBase]: 29/356 cut-off events. [2023-11-06 22:20:25,965 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:20:25,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 356 events. 29/356 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 556 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 279. Up to 3 conditions per place. [2023-11-06 22:20:25,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 359 transitions, 739 flow [2023-11-06 22:20:25,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 324 transitions, 663 flow [2023-11-06 22:20:26,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:20:26,018 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 324 transitions, 663 flow [2023-11-06 22:20:26,023 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 324 transitions, 663 flow [2023-11-06 22:20:26,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 324 transitions, 663 flow [2023-11-06 22:20:26,128 INFO L124 PetriNetUnfolderBase]: 27/324 cut-off events. [2023-11-06 22:20:26,128 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:20:26,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 324 events. 27/324 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 551 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 279. Up to 3 conditions per place. [2023-11-06 22:20:26,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 11934 [2023-11-06 22:20:39,713 INFO L134 LiptonReduction]: Checked pairs total: 17555 [2023-11-06 22:20:39,713 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-11-06 22:20:39,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:20:39,742 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=LoopsAndPotentialCycles, 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;@10b2f9bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:20:39,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-06 22:20:39,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:20:39,746 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:20:39,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:20:39,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:39,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:20:39,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:39,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash 42922, now seen corresponding path program 1 times [2023-11-06 22:20:39,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:39,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78234775] [2023-11-06 22:20:39,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:39,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:40,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:40,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78234775] [2023-11-06 22:20:40,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78234775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:40,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:20:40,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408545339] [2023-11-06 22:20:40,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:40,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:40,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:40,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 710 [2023-11-06 22:20:40,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:40,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:40,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 710 [2023-11-06 22:20:40,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:41,405 INFO L124 PetriNetUnfolderBase]: 6072/8211 cut-off events. [2023-11-06 22:20:41,405 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-06 22:20:41,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16777 conditions, 8211 events. 6072/8211 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 37609 event pairs, 4430 based on Foata normal form. 0/4027 useless extension candidates. Maximal degree in co-relation 15562. Up to 8207 conditions per place. [2023-11-06 22:20:41,478 INFO L140 encePairwiseOnDemand]: 697/710 looper letters, 56 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-11-06 22:20:41,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 267 flow [2023-11-06 22:20:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:41,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1038 transitions. [2023-11-06 22:20:41,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48732394366197185 [2023-11-06 22:20:41,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1038 transitions. [2023-11-06 22:20:41,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1038 transitions. [2023-11-06 22:20:41,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:41,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1038 transitions. [2023-11-06 22:20:41,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:41,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:41,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:41,607 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1038 transitions. [2023-11-06 22:20:41,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 267 flow [2023-11-06 22:20:41,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 258 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:20:41,624 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 184 flow [2023-11-06 22:20:41,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2023-11-06 22:20:41,634 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-11-06 22:20:41,634 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 184 flow [2023-11-06 22:20:41,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:41,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:41,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:20:41,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:20:41,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:41,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:41,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1333111, now seen corresponding path program 1 times [2023-11-06 22:20:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:41,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476380291] [2023-11-06 22:20:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:41,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:41,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:41,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476380291] [2023-11-06 22:20:41,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476380291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:41,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131689081] [2023-11-06 22:20:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:41,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:41,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:41,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:41,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:20:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:20:42,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:42,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:42,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131689081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:42,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:42,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 22:20:42,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970794141] [2023-11-06 22:20:42,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:42,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:42,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:42,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:42,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 710 [2023-11-06 22:20:42,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 323.75) internal successors, (1295), 4 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:42,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:42,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 710 [2023-11-06 22:20:42,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:43,508 INFO L124 PetriNetUnfolderBase]: 6072/8208 cut-off events. [2023-11-06 22:20:43,509 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 22:20:43,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16697 conditions, 8208 events. 6072/8208 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 37580 event pairs, 4430 based on Foata normal form. 0/4031 useless extension candidates. Maximal degree in co-relation 16638. Up to 8195 conditions per place. [2023-11-06 22:20:43,589 INFO L140 encePairwiseOnDemand]: 700/710 looper letters, 52 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-11-06 22:20:43,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 292 flow [2023-11-06 22:20:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1355 transitions. [2023-11-06 22:20:43,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477112676056338 [2023-11-06 22:20:43,598 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1355 transitions. [2023-11-06 22:20:43,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1355 transitions. [2023-11-06 22:20:43,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:43,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1355 transitions. [2023-11-06 22:20:43,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 338.75) internal successors, (1355), 4 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:43,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 710.0) internal successors, (3550), 5 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:43,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 710.0) internal successors, (3550), 5 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:43,620 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 184 flow. Second operand 4 states and 1355 transitions. [2023-11-06 22:20:43,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 292 flow [2023-11-06 22:20:43,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:43,625 INFO L231 Difference]: Finished difference. Result has 53 places, 60 transitions, 174 flow [2023-11-06 22:20:43,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=60} [2023-11-06 22:20:43,627 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-06 22:20:43,627 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 60 transitions, 174 flow [2023-11-06 22:20:43,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 323.75) internal successors, (1295), 4 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:43,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:43,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:20:43,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:43,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:43,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:43,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1333124, now seen corresponding path program 1 times [2023-11-06 22:20:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:43,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600324444] [2023-11-06 22:20:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:43,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:43,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:43,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600324444] [2023-11-06 22:20:43,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600324444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:43,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752866541] [2023-11-06 22:20:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:43,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:43,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:43,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:43,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:20:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:44,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:20:44,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:44,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752866541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:44,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:44,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:20:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635592916] [2023-11-06 22:20:44,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:44,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:44,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 710 [2023-11-06 22:20:44,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 60 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 324.14285714285717) internal successors, (2269), 7 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:44,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:44,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 710 [2023-11-06 22:20:44,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:45,385 INFO L124 PetriNetUnfolderBase]: 6081/8226 cut-off events. [2023-11-06 22:20:45,386 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 22:20:45,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16761 conditions, 8226 events. 6081/8226 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 37624 event pairs, 4430 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 16638. Up to 8207 conditions per place. [2023-11-06 22:20:45,537 INFO L140 encePairwiseOnDemand]: 700/710 looper letters, 53 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2023-11-06 22:20:45,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 420 flow [2023-11-06 22:20:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:20:45,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2025 transitions. [2023-11-06 22:20:45,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753521126760563 [2023-11-06 22:20:45,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2025 transitions. [2023-11-06 22:20:45,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2025 transitions. [2023-11-06 22:20:45,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:45,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2025 transitions. [2023-11-06 22:20:45,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 337.5) internal successors, (2025), 6 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:45,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 710.0) internal successors, (4970), 7 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:45,573 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 710.0) internal successors, (4970), 7 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:45,573 INFO L175 Difference]: Start difference. First operand has 53 places, 60 transitions, 174 flow. Second operand 6 states and 2025 transitions. [2023-11-06 22:20:45,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 420 flow [2023-11-06 22:20:45,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:45,581 INFO L231 Difference]: Finished difference. Result has 59 places, 78 transitions, 348 flow [2023-11-06 22:20:45,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=59, PETRI_TRANSITIONS=78} [2023-11-06 22:20:45,583 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-06 22:20:45,583 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 78 transitions, 348 flow [2023-11-06 22:20:45,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 324.14285714285717) internal successors, (2269), 7 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:45,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:45,586 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:20:45,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:45,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:45,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:45,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:45,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1062515447, now seen corresponding path program 2 times [2023-11-06 22:20:45,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:45,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417525436] [2023-11-06 22:20:45,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:45,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:45,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417525436] [2023-11-06 22:20:45,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417525436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:45,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138583482] [2023-11-06 22:20:45,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:20:45,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:45,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:45,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:46,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:20:46,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:20:46,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:20:46,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:20:46,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:20:46,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:46,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138583482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:46,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:46,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:20:46,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566163248] [2023-11-06 22:20:46,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:46,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:46,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:46,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:46,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:20:46,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 710 [2023-11-06 22:20:46,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:46,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:46,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 710 [2023-11-06 22:20:46,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:47,164 INFO L124 PetriNetUnfolderBase]: 6081/8225 cut-off events. [2023-11-06 22:20:47,164 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 22:20:47,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16800 conditions, 8225 events. 6081/8225 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 37655 event pairs, 4430 based on Foata normal form. 1/4054 useless extension candidates. Maximal degree in co-relation 16712. Up to 8220 conditions per place. [2023-11-06 22:20:47,226 INFO L140 encePairwiseOnDemand]: 707/710 looper letters, 71 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-06 22:20:47,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 492 flow [2023-11-06 22:20:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-11-06 22:20:47,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887323943661972 [2023-11-06 22:20:47,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-11-06 22:20:47,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-11-06 22:20:47,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:47,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-11-06 22:20:47,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:47,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:47,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:47,248 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 348 flow. Second operand 3 states and 1041 transitions. [2023-11-06 22:20:47,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 492 flow [2023-11-06 22:20:47,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 455 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:20:47,256 INFO L231 Difference]: Finished difference. Result has 59 places, 77 transitions, 313 flow [2023-11-06 22:20:47,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=59, PETRI_TRANSITIONS=77} [2023-11-06 22:20:47,258 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-06 22:20:47,259 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 77 transitions, 313 flow [2023-11-06 22:20:47,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:47,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:47,260 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:20:47,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:47,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:47,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:47,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:47,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1099202244, now seen corresponding path program 1 times [2023-11-06 22:20:47,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:47,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773942749] [2023-11-06 22:20:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:47,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:47,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773942749] [2023-11-06 22:20:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773942749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:47,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219941653] [2023-11-06 22:20:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:47,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:47,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:47,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:47,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:20:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:47,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:20:47,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:47,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:47,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219941653] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:47,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:47,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:20:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840929577] [2023-11-06 22:20:47,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:47,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:20:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:47,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:20:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:20:48,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 710 [2023-11-06 22:20:48,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 77 transitions, 313 flow. Second operand has 13 states, 13 states have (on average 324.15384615384613) internal successors, (4214), 13 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:48,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:48,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 710 [2023-11-06 22:20:48,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:49,462 INFO L124 PetriNetUnfolderBase]: 6099/8261 cut-off events. [2023-11-06 22:20:49,463 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-06 22:20:49,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16924 conditions, 8261 events. 6099/8261 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 37901 event pairs, 4430 based on Foata normal form. 12/4101 useless extension candidates. Maximal degree in co-relation 16820. Up to 8212 conditions per place. [2023-11-06 22:20:49,519 INFO L140 encePairwiseOnDemand]: 701/710 looper letters, 52 selfloop transitions, 61 changer transitions 0/113 dead transitions. [2023-11-06 22:20:49,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 113 transitions, 773 flow [2023-11-06 22:20:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:20:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:20:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4001 transitions. [2023-11-06 22:20:49,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46960093896713617 [2023-11-06 22:20:49,537 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4001 transitions. [2023-11-06 22:20:49,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4001 transitions. [2023-11-06 22:20:49,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:49,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4001 transitions. [2023-11-06 22:20:49,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 333.4166666666667) internal successors, (4001), 12 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:49,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 710.0) internal successors, (9230), 13 states have internal predecessors, (9230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:49,576 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 710.0) internal successors, (9230), 13 states have internal predecessors, (9230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:49,576 INFO L175 Difference]: Start difference. First operand has 59 places, 77 transitions, 313 flow. Second operand 12 states and 4001 transitions. [2023-11-06 22:20:49,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 113 transitions, 773 flow [2023-11-06 22:20:49,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 749 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:49,586 INFO L231 Difference]: Finished difference. Result has 74 places, 113 transitions, 731 flow [2023-11-06 22:20:49,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=731, PETRI_PLACES=74, PETRI_TRANSITIONS=113} [2023-11-06 22:20:49,591 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-11-06 22:20:49,592 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 113 transitions, 731 flow [2023-11-06 22:20:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 324.15384615384613) internal successors, (4214), 13 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:49,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:49,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:49,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:49,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:49,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:49,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1204766125, now seen corresponding path program 1 times [2023-11-06 22:20:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226941229] [2023-11-06 22:20:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:49,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:49,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226941229] [2023-11-06 22:20:49,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226941229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:49,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:49,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:49,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181004321] [2023-11-06 22:20:49,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:49,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:49,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:49,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:49,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 710 [2023-11-06 22:20:49,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 113 transitions, 731 flow. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:49,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:49,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 710 [2023-11-06 22:20:49,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:51,291 INFO L124 PetriNetUnfolderBase]: 8395/11269 cut-off events. [2023-11-06 22:20:51,291 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-06 22:20:51,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23139 conditions, 11269 events. 8395/11269 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 53969 event pairs, 4430 based on Foata normal form. 0/5765 useless extension candidates. Maximal degree in co-relation 23021. Up to 8618 conditions per place. [2023-11-06 22:20:51,387 INFO L140 encePairwiseOnDemand]: 704/710 looper letters, 141 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2023-11-06 22:20:51,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 145 transitions, 1088 flow [2023-11-06 22:20:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1092 transitions. [2023-11-06 22:20:51,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126760563380282 [2023-11-06 22:20:51,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1092 transitions. [2023-11-06 22:20:51,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1092 transitions. [2023-11-06 22:20:51,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:51,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1092 transitions. [2023-11-06 22:20:51,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,406 INFO L175 Difference]: Start difference. First operand has 74 places, 113 transitions, 731 flow. Second operand 3 states and 1092 transitions. [2023-11-06 22:20:51,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 145 transitions, 1088 flow [2023-11-06 22:20:51,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 910 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-06 22:20:51,414 INFO L231 Difference]: Finished difference. Result has 72 places, 116 transitions, 581 flow [2023-11-06 22:20:51,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=581, PETRI_PLACES=72, PETRI_TRANSITIONS=116} [2023-11-06 22:20:51,415 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-06 22:20:51,416 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 116 transitions, 581 flow [2023-11-06 22:20:51,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:51,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:51,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:20:51,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:51,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:51,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1204766706, now seen corresponding path program 1 times [2023-11-06 22:20:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:51,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092175320] [2023-11-06 22:20:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:51,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:51,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092175320] [2023-11-06 22:20:51,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092175320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:51,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:51,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825440345] [2023-11-06 22:20:51,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:51,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:51,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 710 [2023-11-06 22:20:51,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 116 transitions, 581 flow. Second operand has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:51,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:51,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 710 [2023-11-06 22:20:51,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:54,061 INFO L124 PetriNetUnfolderBase]: 15987/21369 cut-off events. [2023-11-06 22:20:54,062 INFO L125 PetriNetUnfolderBase]: For 3407/3407 co-relation queries the response was YES. [2023-11-06 22:20:54,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47936 conditions, 21369 events. 15987/21369 cut-off events. For 3407/3407 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 106685 event pairs, 11218 based on Foata normal form. 0/12807 useless extension candidates. Maximal degree in co-relation 47776. Up to 10762 conditions per place. [2023-11-06 22:20:54,240 INFO L140 encePairwiseOnDemand]: 702/710 looper letters, 203 selfloop transitions, 7 changer transitions 0/210 dead transitions. [2023-11-06 22:20:54,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 210 transitions, 1448 flow [2023-11-06 22:20:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1694 transitions. [2023-11-06 22:20:54,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771830985915493 [2023-11-06 22:20:54,249 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1694 transitions. [2023-11-06 22:20:54,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1694 transitions. [2023-11-06 22:20:54,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:54,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1694 transitions. [2023-11-06 22:20:54,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.8) internal successors, (1694), 5 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:54,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 710.0) internal successors, (4260), 6 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:54,268 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 710.0) internal successors, (4260), 6 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:54,268 INFO L175 Difference]: Start difference. First operand has 72 places, 116 transitions, 581 flow. Second operand 5 states and 1694 transitions. [2023-11-06 22:20:54,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 210 transitions, 1448 flow [2023-11-06 22:20:54,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 210 transitions, 1440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:20:54,280 INFO L231 Difference]: Finished difference. Result has 78 places, 120 transitions, 633 flow [2023-11-06 22:20:54,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=633, PETRI_PLACES=78, PETRI_TRANSITIONS=120} [2023-11-06 22:20:54,281 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-11-06 22:20:54,281 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 120 transitions, 633 flow [2023-11-06 22:20:54,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:54,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:54,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:54,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:20:54,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:54,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:54,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1204766644, now seen corresponding path program 1 times [2023-11-06 22:20:54,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:54,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365481343] [2023-11-06 22:20:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:54,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:54,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365481343] [2023-11-06 22:20:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365481343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:54,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:54,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:54,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775596455] [2023-11-06 22:20:54,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:54,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:54,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:54,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 710 [2023-11-06 22:20:54,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 120 transitions, 633 flow. Second operand has 5 states, 5 states have (on average 315.6) internal successors, (1578), 5 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:54,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:54,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 710 [2023-11-06 22:20:54,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:59,025 INFO L124 PetriNetUnfolderBase]: 30968/41339 cut-off events. [2023-11-06 22:20:59,025 INFO L125 PetriNetUnfolderBase]: For 7057/7057 co-relation queries the response was YES. [2023-11-06 22:20:59,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91626 conditions, 41339 events. 30968/41339 cut-off events. For 7057/7057 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 224974 event pairs, 21650 based on Foata normal form. 356/26127 useless extension candidates. Maximal degree in co-relation 91400. Up to 20691 conditions per place. [2023-11-06 22:20:59,363 INFO L140 encePairwiseOnDemand]: 702/710 looper letters, 169 selfloop transitions, 20 changer transitions 0/189 dead transitions. [2023-11-06 22:20:59,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 189 transitions, 1287 flow [2023-11-06 22:20:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:20:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1988 transitions. [2023-11-06 22:20:59,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-06 22:20:59,374 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1988 transitions. [2023-11-06 22:20:59,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1988 transitions. [2023-11-06 22:20:59,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:59,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1988 transitions. [2023-11-06 22:20:59,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 331.3333333333333) internal successors, (1988), 6 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:59,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 710.0) internal successors, (4970), 7 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:59,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 710.0) internal successors, (4970), 7 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:59,394 INFO L175 Difference]: Start difference. First operand has 78 places, 120 transitions, 633 flow. Second operand 6 states and 1988 transitions. [2023-11-06 22:20:59,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 189 transitions, 1287 flow [2023-11-06 22:20:59,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 189 transitions, 1283 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:59,407 INFO L231 Difference]: Finished difference. Result has 86 places, 123 transitions, 724 flow [2023-11-06 22:20:59,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=724, PETRI_PLACES=86, PETRI_TRANSITIONS=123} [2023-11-06 22:20:59,411 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2023-11-06 22:20:59,411 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 123 transitions, 724 flow [2023-11-06 22:20:59,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 315.6) internal successors, (1578), 5 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:59,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:59,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:59,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:20:59,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:20:59,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1148937619, now seen corresponding path program 1 times [2023-11-06 22:20:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:59,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298769422] [2023-11-06 22:20:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:59,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:59,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:59,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298769422] [2023-11-06 22:20:59,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298769422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:59,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776357211] [2023-11-06 22:20:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:59,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:59,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:59,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:59,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:20:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:20:59,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:20:59,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:59,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776357211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-06 22:20:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60008331] [2023-11-06 22:20:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:59,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 710 [2023-11-06 22:20:59,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 123 transitions, 724 flow. Second operand has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:59,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:59,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 710 [2023-11-06 22:20:59,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:03,807 INFO L124 PetriNetUnfolderBase]: 26604/35535 cut-off events. [2023-11-06 22:21:03,807 INFO L125 PetriNetUnfolderBase]: For 7454/7454 co-relation queries the response was YES. [2023-11-06 22:21:03,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79134 conditions, 35535 events. 26604/35535 cut-off events. For 7454/7454 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 189797 event pairs, 18360 based on Foata normal form. 312/22759 useless extension candidates. Maximal degree in co-relation 78900. Up to 35535 conditions per place. [2023-11-06 22:21:04,084 INFO L140 encePairwiseOnDemand]: 707/710 looper letters, 119 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2023-11-06 22:21:04,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 120 transitions, 948 flow [2023-11-06 22:21:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1058 transitions. [2023-11-06 22:21:04,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49671361502347416 [2023-11-06 22:21:04,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1058 transitions. [2023-11-06 22:21:04,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1058 transitions. [2023-11-06 22:21:04,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:04,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1058 transitions. [2023-11-06 22:21:04,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.6666666666667) internal successors, (1058), 3 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:04,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:04,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:04,102 INFO L175 Difference]: Start difference. First operand has 86 places, 123 transitions, 724 flow. Second operand 3 states and 1058 transitions. [2023-11-06 22:21:04,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 120 transitions, 948 flow [2023-11-06 22:21:04,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 120 transitions, 928 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 22:21:04,113 INFO L231 Difference]: Finished difference. Result has 82 places, 120 transitions, 690 flow [2023-11-06 22:21:04,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=690, PETRI_PLACES=82, PETRI_TRANSITIONS=120} [2023-11-06 22:21:04,115 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-06 22:21:04,115 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 120 transitions, 690 flow [2023-11-06 22:21:04,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:04,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:04,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:04,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:04,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:04,322 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:21:04,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1820404223, now seen corresponding path program 1 times [2023-11-06 22:21:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:04,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039822583] [2023-11-06 22:21:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:04,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:04,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:04,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039822583] [2023-11-06 22:21:04,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039822583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:21:04,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803949754] [2023-11-06 22:21:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:04,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:04,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:04,468 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:21:04,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:21:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:04,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:21:04,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:21:04,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803949754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:21:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:21:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660414937] [2023-11-06 22:21:04,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:04,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:21:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:21:04,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:21:04,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 710 [2023-11-06 22:21:04,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 120 transitions, 690 flow. Second operand has 4 states, 4 states have (on average 335.25) internal successors, (1341), 4 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:04,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:04,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 710 [2023-11-06 22:21:04,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:08,374 INFO L124 PetriNetUnfolderBase]: 26022/34797 cut-off events. [2023-11-06 22:21:08,375 INFO L125 PetriNetUnfolderBase]: For 5603/5603 co-relation queries the response was YES. [2023-11-06 22:21:08,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76846 conditions, 34797 events. 26022/34797 cut-off events. For 5603/5603 co-relation queries the response was YES. Maximal size of possible extension queue 1345. Compared 185922 event pairs, 18020 based on Foata normal form. 312/22229 useless extension candidates. Maximal degree in co-relation 76821. Up to 34785 conditions per place. [2023-11-06 22:21:08,629 INFO L140 encePairwiseOnDemand]: 707/710 looper letters, 106 selfloop transitions, 12 changer transitions 0/118 dead transitions. [2023-11-06 22:21:08,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 118 transitions, 913 flow [2023-11-06 22:21:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:21:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:21:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1383 transitions. [2023-11-06 22:21:08,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869718309859155 [2023-11-06 22:21:08,636 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1383 transitions. [2023-11-06 22:21:08,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1383 transitions. [2023-11-06 22:21:08,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:08,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1383 transitions. [2023-11-06 22:21:08,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 345.75) internal successors, (1383), 4 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 710.0) internal successors, (3550), 5 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 710.0) internal successors, (3550), 5 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,650 INFO L175 Difference]: Start difference. First operand has 82 places, 120 transitions, 690 flow. Second operand 4 states and 1383 transitions. [2023-11-06 22:21:08,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 118 transitions, 913 flow [2023-11-06 22:21:08,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 881 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:21:08,661 INFO L231 Difference]: Finished difference. Result has 80 places, 118 transitions, 669 flow [2023-11-06 22:21:08,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=669, PETRI_PLACES=80, PETRI_TRANSITIONS=118} [2023-11-06 22:21:08,662 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2023-11-06 22:21:08,662 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 118 transitions, 669 flow [2023-11-06 22:21:08,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 335.25) internal successors, (1341), 4 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:08,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:08,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:08,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172d376d-8c92-4804-bd80-0f3f855db23a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:21:08,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:21:08,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1803183337, now seen corresponding path program 1 times [2023-11-06 22:21:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:08,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915903165] [2023-11-06 22:21:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:08,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:08,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915903165] [2023-11-06 22:21:08,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915903165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:08,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:08,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:08,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799055723] [2023-11-06 22:21:08,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:08,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:08,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:08,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 710 [2023-11-06 22:21:08,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 118 transitions, 669 flow. Second operand has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:08,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:08,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 710 [2023-11-06 22:21:08,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:14,400 INFO L124 PetriNetUnfolderBase]: 36374/48253 cut-off events. [2023-11-06 22:21:14,400 INFO L125 PetriNetUnfolderBase]: For 6348/6348 co-relation queries the response was YES. [2023-11-06 22:21:14,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106186 conditions, 48253 events. 36374/48253 cut-off events. For 6348/6348 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 264247 event pairs, 18020 based on Foata normal form. 0/31133 useless extension candidates. Maximal degree in co-relation 106163. Up to 36350 conditions per place. [2023-11-06 22:21:14,692 INFO L140 encePairwiseOnDemand]: 704/710 looper letters, 146 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2023-11-06 22:21:14,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 150 transitions, 1054 flow [2023-11-06 22:21:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1086 transitions. [2023-11-06 22:21:14,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098591549295775 [2023-11-06 22:21:14,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1086 transitions. [2023-11-06 22:21:14,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1086 transitions. [2023-11-06 22:21:14,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:14,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1086 transitions. [2023-11-06 22:21:14,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:14,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:14,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:14,707 INFO L175 Difference]: Start difference. First operand has 80 places, 118 transitions, 669 flow. Second operand 3 states and 1086 transitions. [2023-11-06 22:21:14,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 150 transitions, 1054 flow [2023-11-06 22:21:14,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 150 transitions, 1041 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:14,716 INFO L231 Difference]: Finished difference. Result has 81 places, 121 transitions, 684 flow [2023-11-06 22:21:14,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=684, PETRI_PLACES=81, PETRI_TRANSITIONS=121} [2023-11-06 22:21:14,717 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2023-11-06 22:21:14,717 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 121 transitions, 684 flow [2023-11-06 22:21:14,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:14,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:14,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:14,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:21:14,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:21:14,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1803181971, now seen corresponding path program 1 times [2023-11-06 22:21:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:14,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099127986] [2023-11-06 22:21:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:14,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:14,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099127986] [2023-11-06 22:21:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099127986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:14,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:14,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:21:14,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298484642] [2023-11-06 22:21:14,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:14,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:21:14,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:21:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:21:15,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 710 [2023-11-06 22:21:15,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 121 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:15,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:15,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 710 [2023-11-06 22:21:15,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:25,475 INFO L124 PetriNetUnfolderBase]: 69046/91169 cut-off events. [2023-11-06 22:21:25,475 INFO L125 PetriNetUnfolderBase]: For 20841/20841 co-relation queries the response was YES. [2023-11-06 22:21:25,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218674 conditions, 91169 events. 69046/91169 cut-off events. For 20841/20841 co-relation queries the response was YES. Maximal size of possible extension queue 2974. Compared 525056 event pairs, 46216 based on Foata normal form. 0/66809 useless extension candidates. Maximal degree in co-relation 218651. Up to 45896 conditions per place. [2023-11-06 22:21:26,126 INFO L140 encePairwiseOnDemand]: 704/710 looper letters, 148 selfloop transitions, 19 changer transitions 0/167 dead transitions. [2023-11-06 22:21:26,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 167 transitions, 1156 flow [2023-11-06 22:21:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:21:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:21:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1663 transitions. [2023-11-06 22:21:26,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684507042253521 [2023-11-06 22:21:26,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1663 transitions. [2023-11-06 22:21:26,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1663 transitions. [2023-11-06 22:21:26,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:26,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1663 transitions. [2023-11-06 22:21:26,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.6) internal successors, (1663), 5 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:26,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 710.0) internal successors, (4260), 6 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:26,149 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 710.0) internal successors, (4260), 6 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:26,149 INFO L175 Difference]: Start difference. First operand has 81 places, 121 transitions, 684 flow. Second operand 5 states and 1663 transitions. [2023-11-06 22:21:26,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 167 transitions, 1156 flow [2023-11-06 22:21:26,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 167 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:26,192 INFO L231 Difference]: Finished difference. Result has 86 places, 122 transitions, 744 flow [2023-11-06 22:21:26,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=710, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=744, PETRI_PLACES=86, PETRI_TRANSITIONS=122} [2023-11-06 22:21:26,193 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2023-11-06 22:21:26,193 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 122 transitions, 744 flow [2023-11-06 22:21:26,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:26,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:26,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:26,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:21:26,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:21:26,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:26,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1803181777, now seen corresponding path program 1 times [2023-11-06 22:21:26,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:26,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003355670] [2023-11-06 22:21:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:26,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:26,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:26,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003355670] [2023-11-06 22:21:26,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003355670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:26,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:26,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:21:26,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997724774] [2023-11-06 22:21:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:26,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:21:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:21:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:21:26,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 710 [2023-11-06 22:21:26,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 122 transitions, 744 flow. Second operand has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:26,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:26,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 710 [2023-11-06 22:21:26,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand