./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue.i --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_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/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_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/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_87a59d91-bc85-49c7-aaa4-171cd5a8926e/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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:55:11,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:55:11,625 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:55:11,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:55:11,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:55:11,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:55:11,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:55:11,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:55:11,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:55:11,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:55:11,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:55:11,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:55:11,701 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:55:11,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:55:11,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:55:11,704 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:55:11,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:55:11,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:55:11,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:55:11,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:55:11,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:55:11,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:55:11,707 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:55:11,708 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:55:11,708 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:55:11,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:55:11,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:55:11,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:55:11,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:55:11,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:55:11,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:11,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:55:11,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:55:11,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:55:11,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:55:11,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:55:11,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:55:11,714 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:55:11,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:55:11,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:55:11,715 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:55:11,716 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_87a59d91-bc85-49c7-aaa4-171cd5a8926e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-06 21:55:12,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:55:12,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:55:12,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:55:12,089 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:55:12,089 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:55:12,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/queue.i [2023-11-06 21:55:15,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:55:15,819 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:55:15,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/sv-benchmarks/c/pthread/queue.i [2023-11-06 21:55:15,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/data/bd0320d45/f157373561334ee8a4ca48c2410d0388/FLAG8aa192034 [2023-11-06 21:55:15,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/data/bd0320d45/f157373561334ee8a4ca48c2410d0388 [2023-11-06 21:55:15,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:55:15,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:55:15,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:15,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:55:15,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:55:15,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:15" (1/1) ... [2023-11-06 21:55:15,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d568d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:15, skipping insertion in model container [2023-11-06 21:55:15,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:15" (1/1) ... [2023-11-06 21:55:15,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:55:16,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:16,655 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:55:16,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:16,860 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:55:16,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16 WrapperNode [2023-11-06 21:55:16,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:16,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:16,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:55:16,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:55:16,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:16,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:16,954 INFO L138 Inliner]: procedures = 274, calls = 71, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 278 [2023-11-06 21:55:16,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:16,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:55:16,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:55:16,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:55:16,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:16,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:16,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:16,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:16,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:17,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:17,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:17,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:17,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:55:17,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:55:17,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:55:17,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:55:17,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (1/1) ... [2023-11-06 21:55:17,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:17,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:17,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:55:17,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:55:17,131 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 21:55:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 21:55:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 21:55:17,132 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 21:55:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:55:17,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:55:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:55:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:55:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:55:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:55:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:55:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:55:17,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:55:17,136 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 21:55:17,375 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:55:17,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:55:17,993 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:55:18,009 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:55:18,010 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:55:18,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:18 BoogieIcfgContainer [2023-11-06 21:55:18,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:55:18,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:55:18,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:55:18,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:55:18,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:55:15" (1/3) ... [2023-11-06 21:55:18,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a097dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:18, skipping insertion in model container [2023-11-06 21:55:18,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:16" (2/3) ... [2023-11-06 21:55:18,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a097dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:18, skipping insertion in model container [2023-11-06 21:55:18,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:18" (3/3) ... [2023-11-06 21:55:18,025 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-06 21:55:18,036 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:55:18,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:55:18,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-06 21:55:18,050 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:55:18,188 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:55:18,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 326 transitions, 666 flow [2023-11-06 21:55:18,419 INFO L124 PetriNetUnfolderBase]: 18/324 cut-off events. [2023-11-06 21:55:18,419 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:55:18,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 324 events. 18/324 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 529 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-06 21:55:18,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 326 transitions, 666 flow [2023-11-06 21:55:18,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 305 transitions, 619 flow [2023-11-06 21:55:18,451 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:55:18,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 305 transitions, 619 flow [2023-11-06 21:55:18,467 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 305 transitions, 619 flow [2023-11-06 21:55:18,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 305 transitions, 619 flow [2023-11-06 21:55:18,609 INFO L124 PetriNetUnfolderBase]: 16/305 cut-off events. [2023-11-06 21:55:18,609 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:55:18,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 305 events. 16/305 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 469 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-06 21:55:18,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 25932 [2023-11-06 21:55:30,570 INFO L134 LiptonReduction]: Checked pairs total: 57279 [2023-11-06 21:55:30,571 INFO L136 LiptonReduction]: Total number of compositions: 294 [2023-11-06 21:55:30,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:55:30,593 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;@2c66f4ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:55:30,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-06 21:55:30,600 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:55:30,601 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-06 21:55:30,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:55:30,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:30,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:55:30,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:30,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1061848152, now seen corresponding path program 1 times [2023-11-06 21:55:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:30,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830229159] [2023-11-06 21:55:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:30,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:32,026 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 21:55:32,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:32,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830229159] [2023-11-06 21:55:32,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830229159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:32,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:32,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:55:32,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068034473] [2023-11-06 21:55:32,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:32,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:55:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:55:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:55:33,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 620 [2023-11-06 21:55:33,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states 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 21:55:33,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:33,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 620 [2023-11-06 21:55:33,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:34,963 INFO L124 PetriNetUnfolderBase]: 2897/4840 cut-off events. [2023-11-06 21:55:34,964 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-06 21:55:34,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9544 conditions, 4840 events. 2897/4840 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 25756 event pairs, 2292 based on Foata normal form. 0/3436 useless extension candidates. Maximal degree in co-relation 9332. Up to 4595 conditions per place. [2023-11-06 21:55:35,013 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 70 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-11-06 21:55:35,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 337 flow [2023-11-06 21:55:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:55:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:55:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1762 transitions. [2023-11-06 21:55:35,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4736559139784946 [2023-11-06 21:55:35,052 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1762 transitions. [2023-11-06 21:55:35,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1762 transitions. [2023-11-06 21:55:35,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:35,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1762 transitions. [2023-11-06 21:55:35,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.6666666666667) internal successors, (1762), 6 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states 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 21:55:35,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states 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 21:55:35,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states 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 21:55:35,104 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 163 flow. Second operand 6 states and 1762 transitions. [2023-11-06 21:55:35,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 337 flow [2023-11-06 21:55:35,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:55:35,118 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 216 flow [2023-11-06 21:55:35,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-11-06 21:55:35,127 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-11-06 21:55:35,127 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 216 flow [2023-11-06 21:55:35,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states 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 21:55:35,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:35,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:35,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:55:35,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:35,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:35,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1442448104, now seen corresponding path program 1 times [2023-11-06 21:55:35,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:35,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029167607] [2023-11-06 21:55:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:35,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:36,161 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 21:55:36,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:36,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029167607] [2023-11-06 21:55:36,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029167607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:55:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775883839] [2023-11-06 21:55:36,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:36,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:55:36,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:55:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:55:38,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 620 [2023-11-06 21:55:38,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states 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 21:55:38,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:38,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 620 [2023-11-06 21:55:38,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:40,855 INFO L124 PetriNetUnfolderBase]: 3086/5147 cut-off events. [2023-11-06 21:55:40,856 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2023-11-06 21:55:40,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10542 conditions, 5147 events. 3086/5147 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28249 event pairs, 658 based on Foata normal form. 27/3732 useless extension candidates. Maximal degree in co-relation 10100. Up to 4599 conditions per place. [2023-11-06 21:55:40,904 INFO L140 encePairwiseOnDemand]: 612/620 looper letters, 134 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2023-11-06 21:55:40,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 153 transitions, 664 flow [2023-11-06 21:55:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:55:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:55:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1801 transitions. [2023-11-06 21:55:40,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48413978494623655 [2023-11-06 21:55:40,914 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1801 transitions. [2023-11-06 21:55:40,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1801 transitions. [2023-11-06 21:55:40,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:40,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1801 transitions. [2023-11-06 21:55:40,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 300.1666666666667) internal successors, (1801), 6 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states 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 21:55:40,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states 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 21:55:40,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states 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 21:55:40,939 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 216 flow. Second operand 6 states and 1801 transitions. [2023-11-06 21:55:40,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 153 transitions, 664 flow [2023-11-06 21:55:40,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 153 transitions, 664 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:55:40,949 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 299 flow [2023-11-06 21:55:40,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2023-11-06 21:55:40,950 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2023-11-06 21:55:40,951 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 299 flow [2023-11-06 21:55:40,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states 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 21:55:40,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:40,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:40,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:55:40,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:40,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1088783718, now seen corresponding path program 1 times [2023-11-06 21:55:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:40,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742286029] [2023-11-06 21:55:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:41,598 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 21:55:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742286029] [2023-11-06 21:55:41,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742286029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:41,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:55:41,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713175377] [2023-11-06 21:55:41,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:41,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:55:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:55:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:55:42,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 620 [2023-11-06 21:55:42,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states 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 21:55:42,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:42,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 620 [2023-11-06 21:55:42,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:44,316 INFO L124 PetriNetUnfolderBase]: 3080/5142 cut-off events. [2023-11-06 21:55:44,317 INFO L125 PetriNetUnfolderBase]: For 1179/1179 co-relation queries the response was YES. [2023-11-06 21:55:44,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 5142 events. 3080/5142 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28024 event pairs, 2459 based on Foata normal form. 0/3701 useless extension candidates. Maximal degree in co-relation 10884. Up to 4902 conditions per place. [2023-11-06 21:55:44,372 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 81 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-11-06 21:55:44,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 493 flow [2023-11-06 21:55:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:55:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:55:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2023-11-06 21:55:44,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47446236559139787 [2023-11-06 21:55:44,381 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1765 transitions. [2023-11-06 21:55:44,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1765 transitions. [2023-11-06 21:55:44,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:44,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1765 transitions. [2023-11-06 21:55:44,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.1666666666667) internal successors, (1765), 6 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states 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 21:55:44,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states 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 21:55:44,404 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states 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 21:55:44,404 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 299 flow. Second operand 6 states and 1765 transitions. [2023-11-06 21:55:44,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 493 flow [2023-11-06 21:55:44,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 481 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-06 21:55:44,421 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 327 flow [2023-11-06 21:55:44,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2023-11-06 21:55:44,424 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2023-11-06 21:55:44,424 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 327 flow [2023-11-06 21:55:44,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states 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 21:55:44,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:44,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:44,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:55:44,427 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:44,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1362577132, now seen corresponding path program 1 times [2023-11-06 21:55:44,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:44,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637696047] [2023-11-06 21:55:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:44,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:44,521 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 21:55:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637696047] [2023-11-06 21:55:44,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637696047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:44,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:44,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:55:44,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732156125] [2023-11-06 21:55:44,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:44,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:44,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:44,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 620 [2023-11-06 21:55:44,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 21:55:44,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:44,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 620 [2023-11-06 21:55:44,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:45,951 INFO L124 PetriNetUnfolderBase]: 5243/8737 cut-off events. [2023-11-06 21:55:45,951 INFO L125 PetriNetUnfolderBase]: For 1595/1595 co-relation queries the response was YES. [2023-11-06 21:55:45,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 8737 events. 5243/8737 cut-off events. For 1595/1595 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 53992 event pairs, 2314 based on Foata normal form. 0/6548 useless extension candidates. Maximal degree in co-relation 17814. Up to 4830 conditions per place. [2023-11-06 21:55:46,097 INFO L140 encePairwiseOnDemand]: 615/620 looper letters, 154 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-11-06 21:55:46,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 163 transitions, 835 flow [2023-11-06 21:55:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2023-11-06 21:55:46,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650537634408602 [2023-11-06 21:55:46,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2023-11-06 21:55:46,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2023-11-06 21:55:46,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:46,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2023-11-06 21:55:46,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:46,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:55:46,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:55:46,114 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 327 flow. Second operand 3 states and 1051 transitions. [2023-11-06 21:55:46,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 163 transitions, 835 flow [2023-11-06 21:55:46,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 163 transitions, 819 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:55:46,129 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 327 flow [2023-11-06 21:55:46,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2023-11-06 21:55:46,132 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-11-06 21:55:46,132 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 327 flow [2023-11-06 21:55:46,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 21:55:46,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:46,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:46,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:55:46,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:46,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash 819047258, now seen corresponding path program 1 times [2023-11-06 21:55:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173884683] [2023-11-06 21:55:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:46,747 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 21:55:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173884683] [2023-11-06 21:55:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173884683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:46,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:46,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:55:46,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269461069] [2023-11-06 21:55:46,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:46,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:55:46,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:55:46,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:55:48,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 620 [2023-11-06 21:55:48,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 277.42857142857144) internal successors, (1942), 7 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states 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 21:55:48,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:48,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 620 [2023-11-06 21:55:48,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:51,392 INFO L124 PetriNetUnfolderBase]: 5467/9062 cut-off events. [2023-11-06 21:55:51,393 INFO L125 PetriNetUnfolderBase]: For 1632/1632 co-relation queries the response was YES. [2023-11-06 21:55:51,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20133 conditions, 9062 events. 5467/9062 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 54580 event pairs, 1123 based on Foata normal form. 90/6946 useless extension candidates. Maximal degree in co-relation 19887. Up to 7777 conditions per place. [2023-11-06 21:55:51,482 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 144 selfloop transitions, 14 changer transitions 0/164 dead transitions. [2023-11-06 21:55:51,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 164 transitions, 849 flow [2023-11-06 21:55:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:55:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:55:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1805 transitions. [2023-11-06 21:55:51,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852150537634409 [2023-11-06 21:55:51,494 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1805 transitions. [2023-11-06 21:55:51,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1805 transitions. [2023-11-06 21:55:51,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:51,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1805 transitions. [2023-11-06 21:55:51,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states 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 21:55:51,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states 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 21:55:51,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states 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 21:55:51,515 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 327 flow. Second operand 6 states and 1805 transitions. [2023-11-06 21:55:51,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 164 transitions, 849 flow [2023-11-06 21:55:51,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:55:51,537 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 377 flow [2023-11-06 21:55:51,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2023-11-06 21:55:51,541 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2023-11-06 21:55:51,541 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 377 flow [2023-11-06 21:55:51,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.42857142857144) internal successors, (1942), 7 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states 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 21:55:51,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:51,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:51,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:55:51,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:51,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:51,546 INFO L85 PathProgramCache]: Analyzing trace with hash -703590336, now seen corresponding path program 1 times [2023-11-06 21:55:51,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:51,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755538806] [2023-11-06 21:55:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:51,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:51,613 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 21:55:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755538806] [2023-11-06 21:55:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755538806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:51,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:51,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:55:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11260946] [2023-11-06 21:55:51,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:51,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:51,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:51,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 620 [2023-11-06 21:55:51,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states 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 21:55:51,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:51,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 620 [2023-11-06 21:55:51,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:52,782 INFO L124 PetriNetUnfolderBase]: 3981/6846 cut-off events. [2023-11-06 21:55:52,782 INFO L125 PetriNetUnfolderBase]: For 1571/1571 co-relation queries the response was YES. [2023-11-06 21:55:52,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14879 conditions, 6846 events. 3981/6846 cut-off events. For 1571/1571 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 38928 event pairs, 2124 based on Foata normal form. 0/5014 useless extension candidates. Maximal degree in co-relation 14638. Up to 4553 conditions per place. [2023-11-06 21:55:52,838 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 107 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-11-06 21:55:52,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 116 transitions, 600 flow [2023-11-06 21:55:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1014 transitions. [2023-11-06 21:55:52,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451612903225806 [2023-11-06 21:55:52,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1014 transitions. [2023-11-06 21:55:52,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1014 transitions. [2023-11-06 21:55:52,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:52,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1014 transitions. [2023-11-06 21:55:52,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:55:52,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:55:52,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:55:52,856 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 377 flow. Second operand 3 states and 1014 transitions. [2023-11-06 21:55:52,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 116 transitions, 600 flow [2023-11-06 21:55:52,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 541 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-11-06 21:55:52,863 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 247 flow [2023-11-06 21:55:52,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2023-11-06 21:55:52,864 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2023-11-06 21:55:52,865 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 247 flow [2023-11-06 21:55:52,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states 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 21:55:52,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:52,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:52,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:55:52,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:52,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -794516754, now seen corresponding path program 1 times [2023-11-06 21:55:52,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:52,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7560199] [2023-11-06 21:55:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:52,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:52,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7560199] [2023-11-06 21:55:52,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7560199] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:55:52,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979449374] [2023-11-06 21:55:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:52,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:55:52,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:52,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:55:52,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:55:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:53,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:55:53,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:53,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:53,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979449374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:53,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:55:53,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 21:55:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385476531] [2023-11-06 21:55:53,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:53,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:55:53,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:55:53,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:55:53,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 620 [2023-11-06 21:55:53,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states 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 21:55:53,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:53,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 620 [2023-11-06 21:55:53,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:54,351 INFO L124 PetriNetUnfolderBase]: 3803/6564 cut-off events. [2023-11-06 21:55:54,352 INFO L125 PetriNetUnfolderBase]: For 689/693 co-relation queries the response was YES. [2023-11-06 21:55:54,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13833 conditions, 6564 events. 3803/6564 cut-off events. For 689/693 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 38453 event pairs, 100 based on Foata normal form. 2/4954 useless extension candidates. Maximal degree in co-relation 13678. Up to 3251 conditions per place. [2023-11-06 21:55:54,407 INFO L140 encePairwiseOnDemand]: 617/620 looper letters, 161 selfloop transitions, 2 changer transitions 0/171 dead transitions. [2023-11-06 21:55:54,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 171 transitions, 776 flow [2023-11-06 21:55:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:55:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:55:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1378 transitions. [2023-11-06 21:55:54,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5556451612903226 [2023-11-06 21:55:54,419 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1378 transitions. [2023-11-06 21:55:54,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1378 transitions. [2023-11-06 21:55:54,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:54,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1378 transitions. [2023-11-06 21:55:54,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 344.5) internal successors, (1378), 4 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states 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 21:55:54,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states 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 21:55:54,439 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states 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 21:55:54,439 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 247 flow. Second operand 4 states and 1378 transitions. [2023-11-06 21:55:54,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 171 transitions, 776 flow [2023-11-06 21:55:54,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 171 transitions, 772 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:55:54,448 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 244 flow [2023-11-06 21:55:54,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-11-06 21:55:54,451 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 9 predicate places. [2023-11-06 21:55:54,451 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 244 flow [2023-11-06 21:55:54,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states 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 21:55:54,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:54,473 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:54,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:54,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 21:55:54,681 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:54,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -794516607, now seen corresponding path program 1 times [2023-11-06 21:55:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:54,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878492426] [2023-11-06 21:55:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:54,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:55:54,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:54,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878492426] [2023-11-06 21:55:54,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878492426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:54,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:54,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:55:54,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551593776] [2023-11-06 21:55:54,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:54,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:54,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:54,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 620 [2023-11-06 21:55:54,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 21:55:54,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:54,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 620 [2023-11-06 21:55:54,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:55,844 INFO L124 PetriNetUnfolderBase]: 3619/6296 cut-off events. [2023-11-06 21:55:55,844 INFO L125 PetriNetUnfolderBase]: For 1119/1127 co-relation queries the response was YES. [2023-11-06 21:55:55,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13353 conditions, 6296 events. 3619/6296 cut-off events. For 1119/1127 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 36170 event pairs, 412 based on Foata normal form. 4/4850 useless extension candidates. Maximal degree in co-relation 13208. Up to 4846 conditions per place. [2023-11-06 21:55:55,889 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 105 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-11-06 21:55:55,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 543 flow [2023-11-06 21:55:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1014 transitions. [2023-11-06 21:55:55,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451612903225806 [2023-11-06 21:55:55,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1014 transitions. [2023-11-06 21:55:55,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1014 transitions. [2023-11-06 21:55:55,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:55,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1014 transitions. [2023-11-06 21:55:55,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:55:55,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:55:55,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:55:55,906 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 244 flow. Second operand 3 states and 1014 transitions. [2023-11-06 21:55:55,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 543 flow [2023-11-06 21:55:55,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 117 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:55:55,912 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 253 flow [2023-11-06 21:55:55,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-11-06 21:55:55,913 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 9 predicate places. [2023-11-06 21:55:55,913 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 253 flow [2023-11-06 21:55:55,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 21:55:55,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:55,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:55,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:55:55,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:55,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:55,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1978449856, now seen corresponding path program 1 times [2023-11-06 21:55:55,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:55,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441087310] [2023-11-06 21:55:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:55,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:55,978 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 21:55:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441087310] [2023-11-06 21:55:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441087310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:55,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:55,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:55:55,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318633266] [2023-11-06 21:55:55,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:55,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:55,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:55,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:56,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 620 [2023-11-06 21:55:56,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 21:55:56,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:56,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 620 [2023-11-06 21:55:56,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:56,979 INFO L124 PetriNetUnfolderBase]: 4093/7270 cut-off events. [2023-11-06 21:55:56,979 INFO L125 PetriNetUnfolderBase]: For 2881/2881 co-relation queries the response was YES. [2023-11-06 21:55:56,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 7270 events. 4093/7270 cut-off events. For 2881/2881 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 43973 event pairs, 1832 based on Foata normal form. 0/5738 useless extension candidates. Maximal degree in co-relation 16074. Up to 5861 conditions per place. [2023-11-06 21:55:57,031 INFO L140 encePairwiseOnDemand]: 613/620 looper letters, 113 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-11-06 21:55:57,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 600 flow [2023-11-06 21:55:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-11-06 21:55:57,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473118279569893 [2023-11-06 21:55:57,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-11-06 21:55:57,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-11-06 21:55:57,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:57,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-11-06 21:55:57,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states 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 21:55:57,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:55:57,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:55:57,048 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 253 flow. Second operand 3 states and 1018 transitions. [2023-11-06 21:55:57,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 600 flow [2023-11-06 21:55:57,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:55:57,054 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 269 flow [2023-11-06 21:55:57,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2023-11-06 21:55:57,056 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 11 predicate places. [2023-11-06 21:55:57,056 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 269 flow [2023-11-06 21:55:57,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 21:55:57,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:57,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:57,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:55:57,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:55:57,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1190012740, now seen corresponding path program 1 times [2023-11-06 21:55:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:57,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072925450] [2023-11-06 21:55:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:58,405 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 21:55:58,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:58,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072925450] [2023-11-06 21:55:58,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072925450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:58,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:58,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 21:55:58,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832923695] [2023-11-06 21:55:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:58,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:55:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:55:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:56:01,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 620 [2023-11-06 21:56:01,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 269 flow. Second operand has 16 states, 16 states have (on average 260.1875) internal successors, (4163), 16 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states 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 21:56:01,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:01,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 620 [2023-11-06 21:56:01,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:02,608 INFO L124 PetriNetUnfolderBase]: 4339/7394 cut-off events. [2023-11-06 21:56:02,608 INFO L125 PetriNetUnfolderBase]: For 2414/2414 co-relation queries the response was YES. [2023-11-06 21:56:02,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17305 conditions, 7394 events. 4339/7394 cut-off events. For 2414/2414 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 40719 event pairs, 3675 based on Foata normal form. 0/6024 useless extension candidates. Maximal degree in co-relation 17150. Up to 6984 conditions per place. [2023-11-06 21:56:02,652 INFO L140 encePairwiseOnDemand]: 599/620 looper letters, 69 selfloop transitions, 34 changer transitions 1/111 dead transitions. [2023-11-06 21:56:02,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 111 transitions, 590 flow [2023-11-06 21:56:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:56:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 21:56:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4504 transitions. [2023-11-06 21:56:02,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273244781783681 [2023-11-06 21:56:02,673 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4504 transitions. [2023-11-06 21:56:02,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4504 transitions. [2023-11-06 21:56:02,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:02,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4504 transitions. [2023-11-06 21:56:02,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 264.94117647058823) internal successors, (4504), 17 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states 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 21:56:02,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:02,716 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:02,716 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 269 flow. Second operand 17 states and 4504 transitions. [2023-11-06 21:56:02,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 111 transitions, 590 flow [2023-11-06 21:56:02,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 111 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:56:02,722 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 490 flow [2023-11-06 21:56:02,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=490, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2023-11-06 21:56:02,723 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 36 predicate places. [2023-11-06 21:56:02,724 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 490 flow [2023-11-06 21:56:02,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 260.1875) internal successors, (4163), 16 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states 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 21:56:02,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:02,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:02,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:56:02,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:56:02,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1190012766, now seen corresponding path program 1 times [2023-11-06 21:56:02,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:02,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863791516] [2023-11-06 21:56:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:02,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:04,062 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 21:56:04,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:04,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863791516] [2023-11-06 21:56:04,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863791516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:04,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:04,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 21:56:04,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34894190] [2023-11-06 21:56:04,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:04,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:56:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:56:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:56:06,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 21:56:06,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 490 flow. Second operand has 16 states, 16 states have (on average 256.1875) internal successors, (4099), 16 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states 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 21:56:06,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:06,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 21:56:06,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:09,071 INFO L124 PetriNetUnfolderBase]: 4337/7390 cut-off events. [2023-11-06 21:56:09,071 INFO L125 PetriNetUnfolderBase]: For 2870/2870 co-relation queries the response was YES. [2023-11-06 21:56:09,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18266 conditions, 7390 events. 4337/7390 cut-off events. For 2870/2870 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 40725 event pairs, 3675 based on Foata normal form. 0/6022 useless extension candidates. Maximal degree in co-relation 18098. Up to 6982 conditions per place. [2023-11-06 21:56:09,115 INFO L140 encePairwiseOnDemand]: 600/620 looper letters, 69 selfloop transitions, 33 changer transitions 1/110 dead transitions. [2023-11-06 21:56:09,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 110 transitions, 712 flow [2023-11-06 21:56:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:56:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 21:56:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4435 transitions. [2023-11-06 21:56:09,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42077798861480076 [2023-11-06 21:56:09,132 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4435 transitions. [2023-11-06 21:56:09,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4435 transitions. [2023-11-06 21:56:09,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:09,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4435 transitions. [2023-11-06 21:56:09,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 260.88235294117646) internal successors, (4435), 17 states have internal predecessors, (4435), 0 states have call successors, (0), 0 states 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 21:56:09,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:09,173 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:09,173 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 490 flow. Second operand 17 states and 4435 transitions. [2023-11-06 21:56:09,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 110 transitions, 712 flow [2023-11-06 21:56:09,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 110 transitions, 649 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-11-06 21:56:09,184 INFO L231 Difference]: Finished difference. Result has 122 places, 104 transitions, 487 flow [2023-11-06 21:56:09,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=487, PETRI_PLACES=122, PETRI_TRANSITIONS=104} [2023-11-06 21:56:09,185 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 46 predicate places. [2023-11-06 21:56:09,185 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 104 transitions, 487 flow [2023-11-06 21:56:09,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 256.1875) internal successors, (4099), 16 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states 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 21:56:09,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:09,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:09,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:56:09,187 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:56:09,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1367731720, now seen corresponding path program 1 times [2023-11-06 21:56:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730012692] [2023-11-06 21:56:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:09,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:10,317 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 21:56:10,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:10,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730012692] [2023-11-06 21:56:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730012692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:10,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:56:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525909109] [2023-11-06 21:56:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:10,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:56:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:56:10,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:56:13,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 620 [2023-11-06 21:56:13,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 104 transitions, 487 flow. Second operand has 17 states, 17 states have (on average 252.1764705882353) internal successors, (4287), 17 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states 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 21:56:13,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:13,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 620 [2023-11-06 21:56:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:16,000 INFO L124 PetriNetUnfolderBase]: 5016/8624 cut-off events. [2023-11-06 21:56:16,000 INFO L125 PetriNetUnfolderBase]: For 3338/3338 co-relation queries the response was YES. [2023-11-06 21:56:16,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21588 conditions, 8624 events. 5016/8624 cut-off events. For 3338/3338 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 49560 event pairs, 1804 based on Foata normal form. 0/7170 useless extension candidates. Maximal degree in co-relation 17542. Up to 6654 conditions per place. [2023-11-06 21:56:16,075 INFO L140 encePairwiseOnDemand]: 597/620 looper letters, 217 selfloop transitions, 50 changer transitions 3/277 dead transitions. [2023-11-06 21:56:16,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 277 transitions, 1735 flow [2023-11-06 21:56:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:56:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 21:56:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4486 transitions. [2023-11-06 21:56:16,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256166982922201 [2023-11-06 21:56:16,095 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4486 transitions. [2023-11-06 21:56:16,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4486 transitions. [2023-11-06 21:56:16,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:16,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4486 transitions. [2023-11-06 21:56:16,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 263.88235294117646) internal successors, (4486), 17 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states 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 21:56:16,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:16,137 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:16,137 INFO L175 Difference]: Start difference. First operand has 122 places, 104 transitions, 487 flow. Second operand 17 states and 4486 transitions. [2023-11-06 21:56:16,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 277 transitions, 1735 flow [2023-11-06 21:56:16,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 277 transitions, 1669 flow, removed 0 selfloop flow, removed 16 redundant places. [2023-11-06 21:56:16,155 INFO L231 Difference]: Finished difference. Result has 132 places, 120 transitions, 681 flow [2023-11-06 21:56:16,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=681, PETRI_PLACES=132, PETRI_TRANSITIONS=120} [2023-11-06 21:56:16,158 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 56 predicate places. [2023-11-06 21:56:16,159 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 681 flow [2023-11-06 21:56:16,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 252.1764705882353) internal successors, (4287), 17 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states 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 21:56:16,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:16,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:16,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:56:16,161 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:56:16,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash -93272284, now seen corresponding path program 1 times [2023-11-06 21:56:16,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:16,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696608684] [2023-11-06 21:56:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:16,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:17,788 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 21:56:17,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:17,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696608684] [2023-11-06 21:56:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696608684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:17,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:56:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164519519] [2023-11-06 21:56:17,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:17,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:56:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:56:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:56:20,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 21:56:20,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 120 transitions, 681 flow. Second operand has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:20,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:20,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 21:56:20,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:23,747 INFO L124 PetriNetUnfolderBase]: 6370/11026 cut-off events. [2023-11-06 21:56:23,747 INFO L125 PetriNetUnfolderBase]: For 7763/7763 co-relation queries the response was YES. [2023-11-06 21:56:23,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31169 conditions, 11026 events. 6370/11026 cut-off events. For 7763/7763 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 66966 event pairs, 2276 based on Foata normal form. 34/9620 useless extension candidates. Maximal degree in co-relation 30975. Up to 7997 conditions per place. [2023-11-06 21:56:23,853 INFO L140 encePairwiseOnDemand]: 599/620 looper letters, 211 selfloop transitions, 62 changer transitions 3/283 dead transitions. [2023-11-06 21:56:23,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 283 transitions, 2009 flow [2023-11-06 21:56:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:56:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 21:56:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5054 transitions. [2023-11-06 21:56:23,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2023-11-06 21:56:23,869 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5054 transitions. [2023-11-06 21:56:23,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5054 transitions. [2023-11-06 21:56:23,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:23,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5054 transitions. [2023-11-06 21:56:23,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 21:56:23,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 620.0) internal successors, (12400), 20 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states 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 21:56:23,906 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 620.0) internal successors, (12400), 20 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states 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 21:56:23,906 INFO L175 Difference]: Start difference. First operand has 132 places, 120 transitions, 681 flow. Second operand 19 states and 5054 transitions. [2023-11-06 21:56:23,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 283 transitions, 2009 flow [2023-11-06 21:56:23,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 283 transitions, 1942 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-06 21:56:23,994 INFO L231 Difference]: Finished difference. Result has 157 places, 148 transitions, 1085 flow [2023-11-06 21:56:23,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1085, PETRI_PLACES=157, PETRI_TRANSITIONS=148} [2023-11-06 21:56:23,996 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 81 predicate places. [2023-11-06 21:56:23,996 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 148 transitions, 1085 flow [2023-11-06 21:56:23,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:23,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:23,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:23,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:56:23,998 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:56:23,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1216987248, now seen corresponding path program 2 times [2023-11-06 21:56:23,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:23,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532534165] [2023-11-06 21:56:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,347 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 21:56:25,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:25,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532534165] [2023-11-06 21:56:25,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532534165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:25,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:25,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:56:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522936456] [2023-11-06 21:56:25,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:56:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:56:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:56:28,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 21:56:28,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 148 transitions, 1085 flow. Second operand has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:28,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:28,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 21:56:28,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:30,769 INFO L124 PetriNetUnfolderBase]: 6886/11962 cut-off events. [2023-11-06 21:56:30,769 INFO L125 PetriNetUnfolderBase]: For 11083/11083 co-relation queries the response was YES. [2023-11-06 21:56:30,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35782 conditions, 11962 events. 6886/11962 cut-off events. For 11083/11083 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 74647 event pairs, 1854 based on Foata normal form. 34/10510 useless extension candidates. Maximal degree in co-relation 35591. Up to 6910 conditions per place. [2023-11-06 21:56:30,891 INFO L140 encePairwiseOnDemand]: 599/620 looper letters, 207 selfloop transitions, 82 changer transitions 3/299 dead transitions. [2023-11-06 21:56:30,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 299 transitions, 2331 flow [2023-11-06 21:56:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:56:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 21:56:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4535 transitions. [2023-11-06 21:56:30,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43026565464895633 [2023-11-06 21:56:30,899 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4535 transitions. [2023-11-06 21:56:30,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4535 transitions. [2023-11-06 21:56:30,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:30,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4535 transitions. [2023-11-06 21:56:30,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 266.7647058823529) internal successors, (4535), 17 states have internal predecessors, (4535), 0 states have call successors, (0), 0 states 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 21:56:30,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:30,923 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:30,923 INFO L175 Difference]: Start difference. First operand has 157 places, 148 transitions, 1085 flow. Second operand 17 states and 4535 transitions. [2023-11-06 21:56:30,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 299 transitions, 2331 flow [2023-11-06 21:56:31,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 299 transitions, 2271 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-11-06 21:56:31,053 INFO L231 Difference]: Finished difference. Result has 176 places, 156 transitions, 1360 flow [2023-11-06 21:56:31,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1360, PETRI_PLACES=176, PETRI_TRANSITIONS=156} [2023-11-06 21:56:31,054 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 100 predicate places. [2023-11-06 21:56:31,054 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 156 transitions, 1360 flow [2023-11-06 21:56:31,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:31,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:31,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:31,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:56:31,056 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:56:31,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1770692496, now seen corresponding path program 2 times [2023-11-06 21:56:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:31,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249688803] [2023-11-06 21:56:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:31,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:31,896 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 21:56:31,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:31,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249688803] [2023-11-06 21:56:31,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249688803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:31,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:31,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:56:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964514454] [2023-11-06 21:56:31,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:31,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:56:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:56:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:56:33,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 620 [2023-11-06 21:56:33,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 156 transitions, 1360 flow. Second operand has 14 states, 14 states have (on average 271.42857142857144) internal successors, (3800), 14 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states 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 21:56:33,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:33,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 620 [2023-11-06 21:56:33,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:36,346 INFO L124 PetriNetUnfolderBase]: 6877/12027 cut-off events. [2023-11-06 21:56:36,346 INFO L125 PetriNetUnfolderBase]: For 14394/14394 co-relation queries the response was YES. [2023-11-06 21:56:36,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38291 conditions, 12027 events. 6877/12027 cut-off events. For 14394/14394 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 77210 event pairs, 1649 based on Foata normal form. 0/10635 useless extension candidates. Maximal degree in co-relation 37389. Up to 3376 conditions per place. [2023-11-06 21:56:36,505 INFO L140 encePairwiseOnDemand]: 598/620 looper letters, 218 selfloop transitions, 71 changer transitions 3/299 dead transitions. [2023-11-06 21:56:36,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 299 transitions, 2493 flow [2023-11-06 21:56:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:56:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:56:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3436 transitions. [2023-11-06 21:56:36,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46182795698924733 [2023-11-06 21:56:36,514 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3436 transitions. [2023-11-06 21:56:36,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3436 transitions. [2023-11-06 21:56:36,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:36,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3436 transitions. [2023-11-06 21:56:36,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 286.3333333333333) internal successors, (3436), 12 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states 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 21:56:36,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 21:56:36,527 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 21:56:36,528 INFO L175 Difference]: Start difference. First operand has 176 places, 156 transitions, 1360 flow. Second operand 12 states and 3436 transitions. [2023-11-06 21:56:36,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 299 transitions, 2493 flow [2023-11-06 21:56:36,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 299 transitions, 2383 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-11-06 21:56:36,714 INFO L231 Difference]: Finished difference. Result has 181 places, 160 transitions, 1485 flow [2023-11-06 21:56:36,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1485, PETRI_PLACES=181, PETRI_TRANSITIONS=160} [2023-11-06 21:56:36,715 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 105 predicate places. [2023-11-06 21:56:36,716 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 160 transitions, 1485 flow [2023-11-06 21:56:36,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 271.42857142857144) internal successors, (3800), 14 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states 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 21:56:36,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:36,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:36,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:56:36,717 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:56:36,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:36,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1105964816, now seen corresponding path program 3 times [2023-11-06 21:56:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382826200] [2023-11-06 21:56:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,063 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 21:56:38,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:38,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382826200] [2023-11-06 21:56:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382826200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:38,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:56:38,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806014504] [2023-11-06 21:56:38,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:38,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:56:38,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:38,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:56:38,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:56:41,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 21:56:41,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 160 transitions, 1485 flow. Second operand has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:41,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:41,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 21:56:41,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:43,906 INFO L124 PetriNetUnfolderBase]: 7079/12395 cut-off events. [2023-11-06 21:56:43,906 INFO L125 PetriNetUnfolderBase]: For 19461/19461 co-relation queries the response was YES. [2023-11-06 21:56:44,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40904 conditions, 12395 events. 7079/12395 cut-off events. For 19461/19461 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 79287 event pairs, 1710 based on Foata normal form. 34/11035 useless extension candidates. Maximal degree in co-relation 39943. Up to 6442 conditions per place. [2023-11-06 21:56:44,329 INFO L140 encePairwiseOnDemand]: 600/620 looper letters, 211 selfloop transitions, 87 changer transitions 3/308 dead transitions. [2023-11-06 21:56:44,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 308 transitions, 2736 flow [2023-11-06 21:56:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:56:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 21:56:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4533 transitions. [2023-11-06 21:56:44,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300759013282732 [2023-11-06 21:56:44,335 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4533 transitions. [2023-11-06 21:56:44,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4533 transitions. [2023-11-06 21:56:44,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:44,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4533 transitions. [2023-11-06 21:56:44,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 266.6470588235294) internal successors, (4533), 17 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states 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 21:56:44,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:44,356 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:44,356 INFO L175 Difference]: Start difference. First operand has 181 places, 160 transitions, 1485 flow. Second operand 17 states and 4533 transitions. [2023-11-06 21:56:44,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 308 transitions, 2736 flow [2023-11-06 21:56:44,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 308 transitions, 2684 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 21:56:44,563 INFO L231 Difference]: Finished difference. Result has 195 places, 165 transitions, 1703 flow [2023-11-06 21:56:44,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1703, PETRI_PLACES=195, PETRI_TRANSITIONS=165} [2023-11-06 21:56:44,563 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 119 predicate places. [2023-11-06 21:56:44,564 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 165 transitions, 1703 flow [2023-11-06 21:56:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:44,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:44,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:44,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:56:44,565 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:56:44,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1770692522, now seen corresponding path program 4 times [2023-11-06 21:56:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:44,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351567695] [2023-11-06 21:56:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:44,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:46,060 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 21:56:46,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:46,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351567695] [2023-11-06 21:56:46,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351567695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:46,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:46,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:56:46,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391307402] [2023-11-06 21:56:46,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:46,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:56:46,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:56:46,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:56:48,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 21:56:48,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 165 transitions, 1703 flow. Second operand has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:48,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:48,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 21:56:48,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:51,604 INFO L124 PetriNetUnfolderBase]: 7179/12587 cut-off events. [2023-11-06 21:56:51,605 INFO L125 PetriNetUnfolderBase]: For 24868/24868 co-relation queries the response was YES. [2023-11-06 21:56:51,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43331 conditions, 12587 events. 7179/12587 cut-off events. For 24868/24868 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 80914 event pairs, 1583 based on Foata normal form. 34/11231 useless extension candidates. Maximal degree in co-relation 41871. Up to 6442 conditions per place. [2023-11-06 21:56:51,797 INFO L140 encePairwiseOnDemand]: 600/620 looper letters, 212 selfloop transitions, 88 changer transitions 3/310 dead transitions. [2023-11-06 21:56:51,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 310 transitions, 2944 flow [2023-11-06 21:56:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:56:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 21:56:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4530 transitions. [2023-11-06 21:56:51,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297912713472486 [2023-11-06 21:56:51,806 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4530 transitions. [2023-11-06 21:56:51,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4530 transitions. [2023-11-06 21:56:51,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:51,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4530 transitions. [2023-11-06 21:56:51,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 266.47058823529414) internal successors, (4530), 17 states have internal predecessors, (4530), 0 states have call successors, (0), 0 states 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 21:56:51,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:51,830 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 21:56:51,830 INFO L175 Difference]: Start difference. First operand has 195 places, 165 transitions, 1703 flow. Second operand 17 states and 4530 transitions. [2023-11-06 21:56:51,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 310 transitions, 2944 flow [2023-11-06 21:56:52,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 310 transitions, 2850 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-11-06 21:56:52,090 INFO L231 Difference]: Finished difference. Result has 203 places, 167 transitions, 1844 flow [2023-11-06 21:56:52,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1844, PETRI_PLACES=203, PETRI_TRANSITIONS=167} [2023-11-06 21:56:52,091 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 127 predicate places. [2023-11-06 21:56:52,091 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 167 transitions, 1844 flow [2023-11-06 21:56:52,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:52,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:52,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:52,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 21:56:52,093 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:56:52,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1764312722, now seen corresponding path program 5 times [2023-11-06 21:56:52,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649827026] [2023-11-06 21:56:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:52,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:53,152 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 21:56:53,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:53,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649827026] [2023-11-06 21:56:53,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649827026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:53,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:53,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:56:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472526293] [2023-11-06 21:56:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:53,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:56:53,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:56:53,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:56:56,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 21:56:56,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 167 transitions, 1844 flow. Second operand has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:56:56,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:56,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 21:56:56,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:59,938 INFO L124 PetriNetUnfolderBase]: 7179/12644 cut-off events. [2023-11-06 21:56:59,939 INFO L125 PetriNetUnfolderBase]: For 28398/28398 co-relation queries the response was YES. [2023-11-06 21:57:00,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44737 conditions, 12644 events. 7179/12644 cut-off events. For 28398/28398 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 81832 event pairs, 1472 based on Foata normal form. 34/11268 useless extension candidates. Maximal degree in co-relation 43027. Up to 6138 conditions per place. [2023-11-06 21:57:00,133 INFO L140 encePairwiseOnDemand]: 597/620 looper letters, 233 selfloop transitions, 92 changer transitions 3/335 dead transitions. [2023-11-06 21:57:00,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 335 transitions, 3186 flow [2023-11-06 21:57:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 21:57:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 21:57:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4809 transitions. [2023-11-06 21:57:00,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43091397849462365 [2023-11-06 21:57:00,146 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4809 transitions. [2023-11-06 21:57:00,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4809 transitions. [2023-11-06 21:57:00,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:00,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4809 transitions. [2023-11-06 21:57:00,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 267.1666666666667) internal successors, (4809), 18 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states 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 21:57:00,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 620.0) internal successors, (11780), 19 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states 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 21:57:00,178 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 620.0) internal successors, (11780), 19 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states 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 21:57:00,179 INFO L175 Difference]: Start difference. First operand has 203 places, 167 transitions, 1844 flow. Second operand 18 states and 4809 transitions. [2023-11-06 21:57:00,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 335 transitions, 3186 flow [2023-11-06 21:57:00,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 335 transitions, 3071 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-06 21:57:00,578 INFO L231 Difference]: Finished difference. Result has 209 places, 169 transitions, 1926 flow [2023-11-06 21:57:00,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1926, PETRI_PLACES=209, PETRI_TRANSITIONS=169} [2023-11-06 21:57:00,579 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 133 predicate places. [2023-11-06 21:57:00,579 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 169 transitions, 1926 flow [2023-11-06 21:57:00,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.1764705882353) internal successors, (4355), 17 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states 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 21:57:00,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:00,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:00,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 21:57:00,580 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:00,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:00,580 INFO L85 PathProgramCache]: Analyzing trace with hash -605453998, now seen corresponding path program 1 times [2023-11-06 21:57:00,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:00,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189446103] [2023-11-06 21:57:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:00,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:00,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:00,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189446103] [2023-11-06 21:57:00,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189446103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:00,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656033591] [2023-11-06 21:57:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:00,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:00,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:00,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:00,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:57:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:00,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:57:00,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:57:00,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:00,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656033591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:00,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:57:00,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 21:57:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774331198] [2023-11-06 21:57:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:00,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:00,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:00,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:00,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:00,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 620 [2023-11-06 21:57:00,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 169 transitions, 1926 flow. Second operand has 4 states, 4 states have (on average 308.5) internal successors, (1234), 4 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 21:57:00,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:00,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 620 [2023-11-06 21:57:00,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:02,966 INFO L124 PetriNetUnfolderBase]: 6428/11661 cut-off events. [2023-11-06 21:57:02,966 INFO L125 PetriNetUnfolderBase]: For 31364/31395 co-relation queries the response was YES. [2023-11-06 21:57:03,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42858 conditions, 11661 events. 6428/11661 cut-off events. For 31364/31395 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 77714 event pairs, 934 based on Foata normal form. 31/10715 useless extension candidates. Maximal degree in co-relation 41139. Up to 7041 conditions per place. [2023-11-06 21:57:03,140 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 224 selfloop transitions, 7 changer transitions 0/246 dead transitions. [2023-11-06 21:57:03,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 246 transitions, 3245 flow [2023-11-06 21:57:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:57:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:57:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2023-11-06 21:57:03,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5334677419354839 [2023-11-06 21:57:03,143 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2023-11-06 21:57:03,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2023-11-06 21:57:03,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:03,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2023-11-06 21:57:03,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 21:57:03,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states 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 21:57:03,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states 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 21:57:03,149 INFO L175 Difference]: Start difference. First operand has 209 places, 169 transitions, 1926 flow. Second operand 4 states and 1323 transitions. [2023-11-06 21:57:03,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 246 transitions, 3245 flow [2023-11-06 21:57:03,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 246 transitions, 3041 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-11-06 21:57:03,501 INFO L231 Difference]: Finished difference. Result has 196 places, 167 transitions, 1768 flow [2023-11-06 21:57:03,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1768, PETRI_PLACES=196, PETRI_TRANSITIONS=167} [2023-11-06 21:57:03,502 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 120 predicate places. [2023-11-06 21:57:03,502 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 167 transitions, 1768 flow [2023-11-06 21:57:03,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.5) internal successors, (1234), 4 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 21:57:03,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:03,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:03,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:03,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a59d91-bc85-49c7-aaa4-171cd5a8926e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:03,703 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:03,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash -605453880, now seen corresponding path program 1 times [2023-11-06 21:57:03,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:03,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782573654] [2023-11-06 21:57:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:03,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:03,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:03,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782573654] [2023-11-06 21:57:03,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782573654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:03,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:03,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:03,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056971229] [2023-11-06 21:57:03,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:03,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:03,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:03,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:03,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:03,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 620 [2023-11-06 21:57:03,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 167 transitions, 1768 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 21:57:03,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:03,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 620 [2023-11-06 21:57:03,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:05,506 INFO L124 PetriNetUnfolderBase]: 5922/10775 cut-off events. [2023-11-06 21:57:05,506 INFO L125 PetriNetUnfolderBase]: For 26880/26896 co-relation queries the response was YES. [2023-11-06 21:57:05,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39206 conditions, 10775 events. 5922/10775 cut-off events. For 26880/26896 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 70357 event pairs, 2280 based on Foata normal form. 116/10097 useless extension candidates. Maximal degree in co-relation 37941. Up to 6735 conditions per place. [2023-11-06 21:57:05,657 INFO L140 encePairwiseOnDemand]: 615/620 looper letters, 170 selfloop transitions, 9 changer transitions 0/194 dead transitions. [2023-11-06 21:57:05,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 194 transitions, 2243 flow [2023-11-06 21:57:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 993 transitions. [2023-11-06 21:57:05,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338709677419354 [2023-11-06 21:57:05,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 993 transitions. [2023-11-06 21:57:05,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 993 transitions. [2023-11-06 21:57:05,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:05,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 993 transitions. [2023-11-06 21:57:05,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states 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 21:57:05,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:57:05,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:57:05,663 INFO L175 Difference]: Start difference. First operand has 196 places, 167 transitions, 1768 flow. Second operand 3 states and 993 transitions. [2023-11-06 21:57:05,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 194 transitions, 2243 flow [2023-11-06 21:57:05,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 194 transitions, 2230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:05,967 INFO L231 Difference]: Finished difference. Result has 195 places, 166 transitions, 1777 flow [2023-11-06 21:57:05,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1777, PETRI_PLACES=195, PETRI_TRANSITIONS=166} [2023-11-06 21:57:05,968 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 119 predicate places. [2023-11-06 21:57:05,968 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 166 transitions, 1777 flow [2023-11-06 21:57:05,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 21:57:05,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:05,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:05,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 21:57:05,969 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:05,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1008382752, now seen corresponding path program 1 times [2023-11-06 21:57:05,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:05,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157519618] [2023-11-06 21:57:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:05,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:06,642 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 21:57:06,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:06,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157519618] [2023-11-06 21:57:06,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157519618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:06,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:06,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:57:06,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898460265] [2023-11-06 21:57:06,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:06,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:57:06,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:57:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:57:08,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 620 [2023-11-06 21:57:08,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 166 transitions, 1777 flow. Second operand has 12 states, 12 states have (on average 273.8333333333333) internal successors, (3286), 12 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states 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 21:57:08,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:08,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 620 [2023-11-06 21:57:08,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:11,484 INFO L124 PetriNetUnfolderBase]: 9323/16417 cut-off events. [2023-11-06 21:57:11,485 INFO L125 PetriNetUnfolderBase]: For 31191/31191 co-relation queries the response was YES. [2023-11-06 21:57:11,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55637 conditions, 16417 events. 9323/16417 cut-off events. For 31191/31191 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 108370 event pairs, 1288 based on Foata normal form. 0/14991 useless extension candidates. Maximal degree in co-relation 47114. Up to 4815 conditions per place. [2023-11-06 21:57:11,703 INFO L140 encePairwiseOnDemand]: 597/620 looper letters, 293 selfloop transitions, 95 changer transitions 0/395 dead transitions. [2023-11-06 21:57:11,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 395 transitions, 3452 flow [2023-11-06 21:57:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:57:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:57:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3534 transitions. [2023-11-06 21:57:11,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-11-06 21:57:11,708 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3534 transitions. [2023-11-06 21:57:11,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3534 transitions. [2023-11-06 21:57:11,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:11,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3534 transitions. [2023-11-06 21:57:11,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 294.5) internal successors, (3534), 12 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 21:57:11,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 21:57:11,725 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 21:57:11,725 INFO L175 Difference]: Start difference. First operand has 195 places, 166 transitions, 1777 flow. Second operand 12 states and 3534 transitions. [2023-11-06 21:57:11,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 395 transitions, 3452 flow [2023-11-06 21:57:12,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 395 transitions, 3440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:12,051 INFO L231 Difference]: Finished difference. Result has 208 places, 205 transitions, 2364 flow [2023-11-06 21:57:12,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2364, PETRI_PLACES=208, PETRI_TRANSITIONS=205} [2023-11-06 21:57:12,052 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 132 predicate places. [2023-11-06 21:57:12,052 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 205 transitions, 2364 flow [2023-11-06 21:57:12,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 273.8333333333333) internal successors, (3286), 12 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states 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 21:57:12,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:12,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:12,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 21:57:12,053 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:12,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1008382753, now seen corresponding path program 1 times [2023-11-06 21:57:12,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:12,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326957554] [2023-11-06 21:57:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:12,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,735 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 21:57:12,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:12,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326957554] [2023-11-06 21:57:12,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326957554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:12,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:12,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 21:57:12,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014825031] [2023-11-06 21:57:12,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:12,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:57:12,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:57:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:57:13,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 620 [2023-11-06 21:57:13,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 205 transitions, 2364 flow. Second operand has 13 states, 13 states have (on average 270.6923076923077) internal successors, (3519), 13 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states 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 21:57:13,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:13,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 620 [2023-11-06 21:57:13,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:17,213 INFO L124 PetriNetUnfolderBase]: 9526/16924 cut-off events. [2023-11-06 21:57:17,213 INFO L125 PetriNetUnfolderBase]: For 43486/43486 co-relation queries the response was YES. [2023-11-06 21:57:17,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61153 conditions, 16924 events. 9526/16924 cut-off events. For 43486/43486 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 112913 event pairs, 6897 based on Foata normal form. 72/16136 useless extension candidates. Maximal degree in co-relation 58973. Up to 14259 conditions per place. [2023-11-06 21:57:17,447 INFO L140 encePairwiseOnDemand]: 599/620 looper letters, 250 selfloop transitions, 45 changer transitions 3/305 dead transitions. [2023-11-06 21:57:17,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 305 transitions, 3388 flow [2023-11-06 21:57:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:57:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 21:57:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4205 transitions. [2023-11-06 21:57:17,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521505376344086 [2023-11-06 21:57:17,453 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4205 transitions. [2023-11-06 21:57:17,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4205 transitions. [2023-11-06 21:57:17,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:17,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4205 transitions. [2023-11-06 21:57:17,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 280.3333333333333) internal successors, (4205), 15 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states 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 21:57:17,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 620.0) internal successors, (9920), 16 states have internal predecessors, (9920), 0 states have call successors, (0), 0 states 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 21:57:17,473 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 620.0) internal successors, (9920), 16 states have internal predecessors, (9920), 0 states have call successors, (0), 0 states 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 21:57:17,473 INFO L175 Difference]: Start difference. First operand has 208 places, 205 transitions, 2364 flow. Second operand 15 states and 4205 transitions. [2023-11-06 21:57:17,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 305 transitions, 3388 flow [2023-11-06 21:57:17,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 305 transitions, 3230 flow, removed 54 selfloop flow, removed 6 redundant places. [2023-11-06 21:57:17,913 INFO L231 Difference]: Finished difference. Result has 217 places, 210 transitions, 2369 flow [2023-11-06 21:57:17,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2369, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2023-11-06 21:57:17,914 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 141 predicate places. [2023-11-06 21:57:17,914 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 2369 flow [2023-11-06 21:57:17,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 270.6923076923077) internal successors, (3519), 13 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states 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 21:57:17,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:17,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:17,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 21:57:17,916 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:17,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:17,916 INFO L85 PathProgramCache]: Analyzing trace with hash 788592399, now seen corresponding path program 1 times [2023-11-06 21:57:17,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:17,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991226734] [2023-11-06 21:57:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:17,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:18,861 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 21:57:18,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:18,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991226734] [2023-11-06 21:57:18,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991226734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:18,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:18,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:57:18,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893167984] [2023-11-06 21:57:18,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:18,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:57:18,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:18,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:57:18,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:57:20,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 620 [2023-11-06 21:57:20,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 2369 flow. Second operand has 14 states, 14 states have (on average 264.64285714285717) internal successors, (3705), 14 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states 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 21:57:20,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:20,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 620 [2023-11-06 21:57:20,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:24,092 INFO L124 PetriNetUnfolderBase]: 10230/18164 cut-off events. [2023-11-06 21:57:24,092 INFO L125 PetriNetUnfolderBase]: For 50958/50958 co-relation queries the response was YES. [2023-11-06 21:57:24,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66891 conditions, 18164 events. 10230/18164 cut-off events. For 50958/50958 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 122808 event pairs, 5759 based on Foata normal form. 68/17376 useless extension candidates. Maximal degree in co-relation 64307. Up to 13327 conditions per place. [2023-11-06 21:57:24,377 INFO L140 encePairwiseOnDemand]: 603/620 looper letters, 263 selfloop transitions, 59 changer transitions 3/332 dead transitions. [2023-11-06 21:57:24,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 332 transitions, 3700 flow [2023-11-06 21:57:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:57:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 21:57:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3589 transitions. [2023-11-06 21:57:24,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452853598014888 [2023-11-06 21:57:24,383 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3589 transitions. [2023-11-06 21:57:24,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3589 transitions. [2023-11-06 21:57:24,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:24,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3589 transitions. [2023-11-06 21:57:24,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 276.0769230769231) internal successors, (3589), 13 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states 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 21:57:24,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 21:57:24,398 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 21:57:24,398 INFO L175 Difference]: Start difference. First operand has 217 places, 210 transitions, 2369 flow. Second operand 13 states and 3589 transitions. [2023-11-06 21:57:24,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 332 transitions, 3700 flow [2023-11-06 21:57:24,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 332 transitions, 3668 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-06 21:57:24,926 INFO L231 Difference]: Finished difference. Result has 230 places, 220 transitions, 2735 flow [2023-11-06 21:57:24,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2735, PETRI_PLACES=230, PETRI_TRANSITIONS=220} [2023-11-06 21:57:24,928 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 154 predicate places. [2023-11-06 21:57:24,928 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 220 transitions, 2735 flow [2023-11-06 21:57:24,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 264.64285714285717) internal successors, (3705), 14 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states 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 21:57:24,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:24,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 21:57:24,929 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:24,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash 496996531, now seen corresponding path program 2 times [2023-11-06 21:57:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755783599] [2023-11-06 21:57:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,812 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 21:57:25,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755783599] [2023-11-06 21:57:25,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755783599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:25,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:25,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:57:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418553866] [2023-11-06 21:57:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:25,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:57:25,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:57:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:57:27,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 620 [2023-11-06 21:57:27,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 220 transitions, 2735 flow. Second operand has 14 states, 14 states have (on average 266.64285714285717) internal successors, (3733), 14 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states 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 21:57:27,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:27,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 620 [2023-11-06 21:57:27,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:31,015 INFO L124 PetriNetUnfolderBase]: 10119/17941 cut-off events. [2023-11-06 21:57:31,015 INFO L125 PetriNetUnfolderBase]: For 58563/58563 co-relation queries the response was YES. [2023-11-06 21:57:31,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68320 conditions, 17941 events. 10119/17941 cut-off events. For 58563/58563 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 119414 event pairs, 4748 based on Foata normal form. 68/17119 useless extension candidates. Maximal degree in co-relation 66133. Up to 11108 conditions per place. [2023-11-06 21:57:31,329 INFO L140 encePairwiseOnDemand]: 603/620 looper letters, 237 selfloop transitions, 73 changer transitions 3/320 dead transitions. [2023-11-06 21:57:31,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 320 transitions, 3795 flow [2023-11-06 21:57:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:57:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:57:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3337 transitions. [2023-11-06 21:57:31,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485215053763441 [2023-11-06 21:57:31,334 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3337 transitions. [2023-11-06 21:57:31,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3337 transitions. [2023-11-06 21:57:31,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:31,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3337 transitions. [2023-11-06 21:57:31,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 278.0833333333333) internal successors, (3337), 12 states have internal predecessors, (3337), 0 states have call successors, (0), 0 states 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 21:57:31,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 21:57:31,348 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 21:57:31,349 INFO L175 Difference]: Start difference. First operand has 230 places, 220 transitions, 2735 flow. Second operand 12 states and 3337 transitions. [2023-11-06 21:57:31,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 320 transitions, 3795 flow [2023-11-06 21:57:32,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 320 transitions, 3761 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 21:57:32,528 INFO L231 Difference]: Finished difference. Result has 237 places, 221 transitions, 2900 flow [2023-11-06 21:57:32,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2900, PETRI_PLACES=237, PETRI_TRANSITIONS=221} [2023-11-06 21:57:32,529 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 161 predicate places. [2023-11-06 21:57:32,530 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 221 transitions, 2900 flow [2023-11-06 21:57:32,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 266.64285714285717) internal successors, (3733), 14 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states 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 21:57:32,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:32,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:32,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 21:57:32,531 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:32,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1102612436, now seen corresponding path program 1 times [2023-11-06 21:57:32,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:32,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693083514] [2023-11-06 21:57:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:33,733 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 21:57:33,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:33,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693083514] [2023-11-06 21:57:33,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693083514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:33,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:33,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 21:57:33,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370306922] [2023-11-06 21:57:33,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:33,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:57:33,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:33,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:57:33,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:57:35,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 620 [2023-11-06 21:57:35,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 221 transitions, 2900 flow. Second operand has 15 states, 15 states have (on average 260.53333333333336) internal successors, (3908), 15 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states 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 21:57:35,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:35,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 620 [2023-11-06 21:57:35,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:40,825 INFO L124 PetriNetUnfolderBase]: 10403/18401 cut-off events. [2023-11-06 21:57:40,825 INFO L125 PetriNetUnfolderBase]: For 70035/70035 co-relation queries the response was YES. [2023-11-06 21:57:41,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71375 conditions, 18401 events. 10403/18401 cut-off events. For 70035/70035 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 122783 event pairs, 2403 based on Foata normal form. 34/17545 useless extension candidates. Maximal degree in co-relation 68748. Up to 10249 conditions per place. [2023-11-06 21:57:41,120 INFO L140 encePairwiseOnDemand]: 602/620 looper letters, 245 selfloop transitions, 86 changer transitions 3/341 dead transitions. [2023-11-06 21:57:41,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 341 transitions, 4087 flow [2023-11-06 21:57:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:57:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 21:57:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3800 transitions. [2023-11-06 21:57:41,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377880184331797 [2023-11-06 21:57:41,129 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3800 transitions. [2023-11-06 21:57:41,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3800 transitions. [2023-11-06 21:57:41,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:41,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3800 transitions. [2023-11-06 21:57:41,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 271.42857142857144) internal successors, (3800), 14 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states 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 21:57:41,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states 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 21:57:41,144 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states 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 21:57:41,144 INFO L175 Difference]: Start difference. First operand has 237 places, 221 transitions, 2900 flow. Second operand 14 states and 3800 transitions. [2023-11-06 21:57:41,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 341 transitions, 4087 flow [2023-11-06 21:57:41,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 341 transitions, 3972 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-06 21:57:41,906 INFO L231 Difference]: Finished difference. Result has 241 places, 223 transitions, 2988 flow [2023-11-06 21:57:41,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2988, PETRI_PLACES=241, PETRI_TRANSITIONS=223} [2023-11-06 21:57:41,907 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 165 predicate places. [2023-11-06 21:57:41,907 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 223 transitions, 2988 flow [2023-11-06 21:57:41,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 260.53333333333336) internal successors, (3908), 15 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states 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 21:57:41,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:41,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:41,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 21:57:41,908 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:41,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1102612437, now seen corresponding path program 3 times [2023-11-06 21:57:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:41,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011996979] [2023-11-06 21:57:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:41,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,912 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 21:57:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011996979] [2023-11-06 21:57:42,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011996979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:42,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:42,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:57:42,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399310588] [2023-11-06 21:57:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:42,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:57:42,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:57:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:57:44,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 620 [2023-11-06 21:57:44,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 223 transitions, 2988 flow. Second operand has 14 states, 14 states have (on average 264.64285714285717) internal successors, (3705), 14 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states 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 21:57:44,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:44,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 620 [2023-11-06 21:57:44,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:50,374 INFO L124 PetriNetUnfolderBase]: 11588/20456 cut-off events. [2023-11-06 21:57:50,374 INFO L125 PetriNetUnfolderBase]: For 76510/76510 co-relation queries the response was YES. [2023-11-06 21:57:50,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79051 conditions, 20456 events. 11588/20456 cut-off events. For 76510/76510 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 139573 event pairs, 3420 based on Foata normal form. 150/19604 useless extension candidates. Maximal degree in co-relation 73229. Up to 10202 conditions per place. [2023-11-06 21:57:50,917 INFO L140 encePairwiseOnDemand]: 598/620 looper letters, 260 selfloop transitions, 92 changer transitions 0/359 dead transitions. [2023-11-06 21:57:50,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 359 transitions, 4310 flow [2023-11-06 21:57:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:57:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:57:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3345 transitions. [2023-11-06 21:57:50,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495967741935484 [2023-11-06 21:57:50,923 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3345 transitions. [2023-11-06 21:57:50,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3345 transitions. [2023-11-06 21:57:50,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:50,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3345 transitions. [2023-11-06 21:57:50,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 278.75) internal successors, (3345), 12 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states 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 21:57:50,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 21:57:50,932 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 21:57:50,932 INFO L175 Difference]: Start difference. First operand has 241 places, 223 transitions, 2988 flow. Second operand 12 states and 3345 transitions. [2023-11-06 21:57:50,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 359 transitions, 4310 flow [2023-11-06 21:57:51,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 359 transitions, 4149 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-06 21:57:51,638 INFO L231 Difference]: Finished difference. Result has 243 places, 234 transitions, 3251 flow [2023-11-06 21:57:51,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2821, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3251, PETRI_PLACES=243, PETRI_TRANSITIONS=234} [2023-11-06 21:57:51,639 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 167 predicate places. [2023-11-06 21:57:51,639 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 234 transitions, 3251 flow [2023-11-06 21:57:51,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 264.64285714285717) internal successors, (3705), 14 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states 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 21:57:51,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:51,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:51,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 21:57:51,640 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:57:51,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash -86313166, now seen corresponding path program 2 times [2023-11-06 21:57:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589015067] [2023-11-06 21:57:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:52,695 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 21:57:52,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:52,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589015067] [2023-11-06 21:57:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589015067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 21:57:52,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437581293] [2023-11-06 21:57:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:52,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:57:52,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:57:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:57:54,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 620 [2023-11-06 21:57:54,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 234 transitions, 3251 flow. Second operand has 15 states, 15 states have (on average 262.53333333333336) internal successors, (3938), 15 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states 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 21:57:54,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:54,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 620 [2023-11-06 21:57:54,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:59,918 INFO L124 PetriNetUnfolderBase]: 10254/18160 cut-off events. [2023-11-06 21:57:59,918 INFO L125 PetriNetUnfolderBase]: For 84453/84457 co-relation queries the response was YES. [2023-11-06 21:58:00,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73757 conditions, 18160 events. 10254/18160 cut-off events. For 84453/84457 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 120860 event pairs, 2330 based on Foata normal form. 204/17514 useless extension candidates. Maximal degree in co-relation 70295. Up to 8519 conditions per place. [2023-11-06 21:58:00,191 INFO L140 encePairwiseOnDemand]: 598/620 looper letters, 260 selfloop transitions, 96 changer transitions 3/366 dead transitions. [2023-11-06 21:58:00,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 366 transitions, 4439 flow [2023-11-06 21:58:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:58:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 21:58:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4110 transitions. [2023-11-06 21:58:00,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2023-11-06 21:58:00,199 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4110 transitions. [2023-11-06 21:58:00,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4110 transitions. [2023-11-06 21:58:00,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:00,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4110 transitions. [2023-11-06 21:58:00,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 274.0) internal successors, (4110), 15 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states 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 21:58:00,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 620.0) internal successors, (9920), 16 states have internal predecessors, (9920), 0 states have call successors, (0), 0 states 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 21:58:00,216 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 620.0) internal successors, (9920), 16 states have internal predecessors, (9920), 0 states have call successors, (0), 0 states 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 21:58:00,217 INFO L175 Difference]: Start difference. First operand has 243 places, 234 transitions, 3251 flow. Second operand 15 states and 4110 transitions. [2023-11-06 21:58:00,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 366 transitions, 4439 flow [2023-11-06 21:58:00,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 366 transitions, 4232 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-11-06 21:58:00,950 INFO L231 Difference]: Finished difference. Result has 247 places, 227 transitions, 3174 flow [2023-11-06 21:58:00,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3174, PETRI_PLACES=247, PETRI_TRANSITIONS=227} [2023-11-06 21:58:00,950 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 171 predicate places. [2023-11-06 21:58:00,951 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 227 transitions, 3174 flow [2023-11-06 21:58:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 262.53333333333336) internal successors, (3938), 15 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states 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 21:58:00,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:00,951 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:00,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 21:58:00,952 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:58:00,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash 308642922, now seen corresponding path program 1 times [2023-11-06 21:58:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:00,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769595831] [2023-11-06 21:58:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:00,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:01,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:01,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769595831] [2023-11-06 21:58:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769595831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:01,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74661985] [2023-11-06 21:58:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:01,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:01,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:01,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 620 [2023-11-06 21:58:01,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 227 transitions, 3174 flow. Second operand has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 21:58:01,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:01,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 620 [2023-11-06 21:58:01,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:03,401 INFO L124 PetriNetUnfolderBase]: 5509/10038 cut-off events. [2023-11-06 21:58:03,401 INFO L125 PetriNetUnfolderBase]: For 64943/64973 co-relation queries the response was YES. [2023-11-06 21:58:03,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47084 conditions, 10038 events. 5509/10038 cut-off events. For 64943/64973 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 65953 event pairs, 4045 based on Foata normal form. 130/10020 useless extension candidates. Maximal degree in co-relation 46901. Up to 7773 conditions per place. [2023-11-06 21:58:03,528 INFO L140 encePairwiseOnDemand]: 617/620 looper letters, 177 selfloop transitions, 2 changer transitions 3/194 dead transitions. [2023-11-06 21:58:03,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 194 transitions, 3131 flow [2023-11-06 21:58:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-11-06 21:58:03,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311827956989247 [2023-11-06 21:58:03,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-11-06 21:58:03,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-11-06 21:58:03,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:03,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-11-06 21:58:03,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:03,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:58:03,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:58:03,532 INFO L175 Difference]: Start difference. First operand has 247 places, 227 transitions, 3174 flow. Second operand 3 states and 988 transitions. [2023-11-06 21:58:03,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 194 transitions, 3131 flow [2023-11-06 21:58:04,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 194 transitions, 2797 flow, removed 6 selfloop flow, removed 22 redundant places. [2023-11-06 21:58:04,067 INFO L231 Difference]: Finished difference. Result has 228 places, 178 transitions, 2372 flow [2023-11-06 21:58:04,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2372, PETRI_PLACES=228, PETRI_TRANSITIONS=178} [2023-11-06 21:58:04,068 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 152 predicate places. [2023-11-06 21:58:04,068 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 178 transitions, 2372 flow [2023-11-06 21:58:04,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 21:58:04,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:04,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 21:58:04,069 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:58:04,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:04,069 INFO L85 PathProgramCache]: Analyzing trace with hash 44505749, now seen corresponding path program 1 times [2023-11-06 21:58:04,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:04,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500496956] [2023-11-06 21:58:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:04,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:04,146 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 21:58:04,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:04,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500496956] [2023-11-06 21:58:04,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500496956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:04,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:04,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838843951] [2023-11-06 21:58:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:04,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:04,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:04,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 620 [2023-11-06 21:58:04,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 178 transitions, 2372 flow. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states 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 21:58:04,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:04,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 620 [2023-11-06 21:58:04,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:05,574 INFO L124 PetriNetUnfolderBase]: 3677/7014 cut-off events. [2023-11-06 21:58:05,575 INFO L125 PetriNetUnfolderBase]: For 34165/34171 co-relation queries the response was YES. [2023-11-06 21:58:05,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30832 conditions, 7014 events. 3677/7014 cut-off events. For 34165/34171 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 43960 event pairs, 965 based on Foata normal form. 692/7588 useless extension candidates. Maximal degree in co-relation 29030. Up to 5035 conditions per place. [2023-11-06 21:58:05,665 INFO L140 encePairwiseOnDemand]: 614/620 looper letters, 164 selfloop transitions, 15 changer transitions 0/191 dead transitions. [2023-11-06 21:58:05,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 191 transitions, 2803 flow [2023-11-06 21:58:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2023-11-06 21:58:05,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258064516129032 [2023-11-06 21:58:05,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2023-11-06 21:58:05,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2023-11-06 21:58:05,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:05,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2023-11-06 21:58:05,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 21:58:05,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:58:05,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 21:58:05,670 INFO L175 Difference]: Start difference. First operand has 228 places, 178 transitions, 2372 flow. Second operand 3 states and 978 transitions. [2023-11-06 21:58:05,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 191 transitions, 2803 flow [2023-11-06 21:58:06,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 191 transitions, 2799 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:06,154 INFO L231 Difference]: Finished difference. Result has 228 places, 178 transitions, 2398 flow [2023-11-06 21:58:06,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2398, PETRI_PLACES=228, PETRI_TRANSITIONS=178} [2023-11-06 21:58:06,155 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 152 predicate places. [2023-11-06 21:58:06,155 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 178 transitions, 2398 flow [2023-11-06 21:58:06,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states 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 21:58:06,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:06,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 21:58:06,156 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:58:06,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash 209844249, now seen corresponding path program 1 times [2023-11-06 21:58:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:06,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776830030] [2023-11-06 21:58:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:06,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:08,412 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 21:58:08,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:08,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776830030] [2023-11-06 21:58:08,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776830030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:08,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:08,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-06 21:58:08,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765242342] [2023-11-06 21:58:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:08,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 21:58:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 21:58:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-11-06 21:58:13,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 620 [2023-11-06 21:58:13,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 178 transitions, 2398 flow. Second operand has 22 states, 22 states have (on average 247.45454545454547) internal successors, (5444), 22 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states 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 21:58:13,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:13,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 620 [2023-11-06 21:58:13,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:16,347 INFO L124 PetriNetUnfolderBase]: 4016/7722 cut-off events. [2023-11-06 21:58:16,347 INFO L125 PetriNetUnfolderBase]: For 39462/39486 co-relation queries the response was YES. [2023-11-06 21:58:16,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33840 conditions, 7722 events. 4016/7722 cut-off events. For 39462/39486 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 49717 event pairs, 1743 based on Foata normal form. 6/7580 useless extension candidates. Maximal degree in co-relation 32045. Up to 4051 conditions per place. [2023-11-06 21:58:16,430 INFO L140 encePairwiseOnDemand]: 597/620 looper letters, 238 selfloop transitions, 79 changer transitions 6/329 dead transitions. [2023-11-06 21:58:16,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 329 transitions, 3765 flow [2023-11-06 21:58:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 21:58:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 21:58:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5624 transitions. [2023-11-06 21:58:16,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41231671554252197 [2023-11-06 21:58:16,437 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5624 transitions. [2023-11-06 21:58:16,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5624 transitions. [2023-11-06 21:58:16,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:16,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5624 transitions. [2023-11-06 21:58:16,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 255.63636363636363) internal successors, (5624), 22 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states 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 21:58:16,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 620.0) internal successors, (14260), 23 states have internal predecessors, (14260), 0 states have call successors, (0), 0 states 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 21:58:16,457 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 620.0) internal successors, (14260), 23 states have internal predecessors, (14260), 0 states have call successors, (0), 0 states 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 21:58:16,457 INFO L175 Difference]: Start difference. First operand has 228 places, 178 transitions, 2398 flow. Second operand 22 states and 5624 transitions. [2023-11-06 21:58:16,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 329 transitions, 3765 flow [2023-11-06 21:58:16,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 329 transitions, 3741 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:16,732 INFO L231 Difference]: Finished difference. Result has 254 places, 185 transitions, 2641 flow [2023-11-06 21:58:16,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2641, PETRI_PLACES=254, PETRI_TRANSITIONS=185} [2023-11-06 21:58:16,733 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 178 predicate places. [2023-11-06 21:58:16,733 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 185 transitions, 2641 flow [2023-11-06 21:58:16,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 247.45454545454547) internal successors, (5444), 22 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states 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 21:58:16,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:16,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:16,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 21:58:16,734 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:58:16,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash -664700251, now seen corresponding path program 1 times [2023-11-06 21:58:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:16,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838399423] [2023-11-06 21:58:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:18,494 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 21:58:18,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:18,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838399423] [2023-11-06 21:58:18,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838399423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:18,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:18,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-06 21:58:18,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249699753] [2023-11-06 21:58:18,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:18,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 21:58:18,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:18,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 21:58:18,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-11-06 21:58:21,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 620 [2023-11-06 21:58:21,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 185 transitions, 2641 flow. Second operand has 22 states, 22 states have (on average 251.45454545454547) internal successors, (5532), 22 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states 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 21:58:21,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:21,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 620 [2023-11-06 21:58:21,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:24,149 INFO L124 PetriNetUnfolderBase]: 4000/7700 cut-off events. [2023-11-06 21:58:24,149 INFO L125 PetriNetUnfolderBase]: For 42310/42328 co-relation queries the response was YES. [2023-11-06 21:58:24,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34406 conditions, 7700 events. 4000/7700 cut-off events. For 42310/42328 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 49441 event pairs, 1715 based on Foata normal form. 4/7606 useless extension candidates. Maximal degree in co-relation 33938. Up to 4045 conditions per place. [2023-11-06 21:58:24,246 INFO L140 encePairwiseOnDemand]: 596/620 looper letters, 225 selfloop transitions, 83 changer transitions 15/329 dead transitions. [2023-11-06 21:58:24,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 329 transitions, 3948 flow [2023-11-06 21:58:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 21:58:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 21:58:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5711 transitions. [2023-11-06 21:58:24,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186950146627566 [2023-11-06 21:58:24,252 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5711 transitions. [2023-11-06 21:58:24,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5711 transitions. [2023-11-06 21:58:24,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:24,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5711 transitions. [2023-11-06 21:58:24,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 259.59090909090907) internal successors, (5711), 22 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states 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 21:58:24,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 620.0) internal successors, (14260), 23 states have internal predecessors, (14260), 0 states have call successors, (0), 0 states 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 21:58:24,264 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 620.0) internal successors, (14260), 23 states have internal predecessors, (14260), 0 states have call successors, (0), 0 states 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 21:58:24,264 INFO L175 Difference]: Start difference. First operand has 254 places, 185 transitions, 2641 flow. Second operand 22 states and 5711 transitions. [2023-11-06 21:58:24,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 329 transitions, 3948 flow [2023-11-06 21:58:24,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 329 transitions, 3783 flow, removed 5 selfloop flow, removed 16 redundant places. [2023-11-06 21:58:24,575 INFO L231 Difference]: Finished difference. Result has 260 places, 185 transitions, 2646 flow [2023-11-06 21:58:24,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2646, PETRI_PLACES=260, PETRI_TRANSITIONS=185} [2023-11-06 21:58:24,575 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 184 predicate places. [2023-11-06 21:58:24,576 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 185 transitions, 2646 flow [2023-11-06 21:58:24,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 251.45454545454547) internal successors, (5532), 22 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states 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 21:58:24,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:24,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:24,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-06 21:58:24,577 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:58:24,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:24,577 INFO L85 PathProgramCache]: Analyzing trace with hash -177531867, now seen corresponding path program 2 times [2023-11-06 21:58:24,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:24,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394798726] [2023-11-06 21:58:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:24,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:25,718 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 21:58:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394798726] [2023-11-06 21:58:25,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394798726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:25,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:25,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 21:58:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312251703] [2023-11-06 21:58:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:25,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 21:58:25,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 21:58:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:58:29,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 620 [2023-11-06 21:58:29,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 185 transitions, 2646 flow. Second operand has 18 states, 18 states have (on average 258.77777777777777) internal successors, (4658), 18 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states 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 21:58:29,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:29,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 620 [2023-11-06 21:58:29,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:32,002 INFO L124 PetriNetUnfolderBase]: 4096/7806 cut-off events. [2023-11-06 21:58:32,002 INFO L125 PetriNetUnfolderBase]: For 38025/38093 co-relation queries the response was YES. [2023-11-06 21:58:32,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35062 conditions, 7806 events. 4096/7806 cut-off events. For 38025/38093 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 49648 event pairs, 704 based on Foata normal form. 36/7750 useless extension candidates. Maximal degree in co-relation 34594. Up to 1609 conditions per place. [2023-11-06 21:58:32,115 INFO L140 encePairwiseOnDemand]: 597/620 looper letters, 197 selfloop transitions, 99 changer transitions 4/306 dead transitions. [2023-11-06 21:58:32,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 306 transitions, 3793 flow [2023-11-06 21:58:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 21:58:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 21:58:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5318 transitions. [2023-11-06 21:58:32,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288709677419355 [2023-11-06 21:58:32,121 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5318 transitions. [2023-11-06 21:58:32,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5318 transitions. [2023-11-06 21:58:32,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:32,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5318 transitions. [2023-11-06 21:58:32,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 265.9) internal successors, (5318), 20 states have internal predecessors, (5318), 0 states have call successors, (0), 0 states 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 21:58:32,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 620.0) internal successors, (13020), 21 states have internal predecessors, (13020), 0 states have call successors, (0), 0 states 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 21:58:32,135 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 620.0) internal successors, (13020), 21 states have internal predecessors, (13020), 0 states have call successors, (0), 0 states 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 21:58:32,135 INFO L175 Difference]: Start difference. First operand has 260 places, 185 transitions, 2646 flow. Second operand 20 states and 5318 transitions. [2023-11-06 21:58:32,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 306 transitions, 3793 flow [2023-11-06 21:58:32,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 306 transitions, 3646 flow, removed 1 selfloop flow, removed 19 redundant places. [2023-11-06 21:58:32,476 INFO L231 Difference]: Finished difference. Result has 264 places, 191 transitions, 2757 flow [2023-11-06 21:58:32,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2499, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2757, PETRI_PLACES=264, PETRI_TRANSITIONS=191} [2023-11-06 21:58:32,477 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 188 predicate places. [2023-11-06 21:58:32,477 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 191 transitions, 2757 flow [2023-11-06 21:58:32,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 258.77777777777777) internal successors, (4658), 18 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states 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 21:58:32,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:32,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-06 21:58:32,478 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:58:32,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash 903213521, now seen corresponding path program 2 times [2023-11-06 21:58:32,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:32,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107276998] [2023-11-06 21:58:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:32,924 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 21:58:32,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:32,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107276998] [2023-11-06 21:58:32,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107276998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:32,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:32,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:58:32,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423847767] [2023-11-06 21:58:32,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:32,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:58:32,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:58:32,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:58:34,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 620 [2023-11-06 21:58:34,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 191 transitions, 2757 flow. Second operand has 12 states, 12 states have (on average 272.6666666666667) internal successors, (3272), 12 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states 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 21:58:34,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:34,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 620 [2023-11-06 21:58:34,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:36,527 INFO L124 PetriNetUnfolderBase]: 4637/9000 cut-off events. [2023-11-06 21:58:36,527 INFO L125 PetriNetUnfolderBase]: For 42938/42954 co-relation queries the response was YES. [2023-11-06 21:58:36,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39190 conditions, 9000 events. 4637/9000 cut-off events. For 42938/42954 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 59022 event pairs, 1466 based on Foata normal form. 38/8908 useless extension candidates. Maximal degree in co-relation 38709. Up to 2835 conditions per place. [2023-11-06 21:58:36,627 INFO L140 encePairwiseOnDemand]: 600/620 looper letters, 192 selfloop transitions, 75 changer transitions 3/276 dead transitions. [2023-11-06 21:58:36,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 276 transitions, 3682 flow [2023-11-06 21:58:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:58:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 21:58:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3926 transitions. [2023-11-06 21:58:36,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523041474654378 [2023-11-06 21:58:36,632 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3926 transitions. [2023-11-06 21:58:36,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3926 transitions. [2023-11-06 21:58:36,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:36,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3926 transitions. [2023-11-06 21:58:36,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 280.42857142857144) internal successors, (3926), 14 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states 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 21:58:36,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states 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 21:58:36,645 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states 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 21:58:36,646 INFO L175 Difference]: Start difference. First operand has 264 places, 191 transitions, 2757 flow. Second operand 14 states and 3926 transitions. [2023-11-06 21:58:36,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 276 transitions, 3682 flow [2023-11-06 21:58:36,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 276 transitions, 3449 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-11-06 21:58:36,986 INFO L231 Difference]: Finished difference. Result has 268 places, 198 transitions, 2779 flow [2023-11-06 21:58:36,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2779, PETRI_PLACES=268, PETRI_TRANSITIONS=198} [2023-11-06 21:58:36,987 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 192 predicate places. [2023-11-06 21:58:36,987 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 198 transitions, 2779 flow [2023-11-06 21:58:36,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 272.6666666666667) internal successors, (3272), 12 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states 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 21:58:36,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:36,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:36,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-06 21:58:36,988 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 21:58:36,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1469036827, now seen corresponding path program 3 times [2023-11-06 21:58:36,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:36,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199384151] [2023-11-06 21:58:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:36,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:37,663 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 21:58:37,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:37,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199384151] [2023-11-06 21:58:37,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199384151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:37,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:37,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:58:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886118820] [2023-11-06 21:58:37,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:37,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:58:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:58:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110