./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:54:45,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:54:46,002 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:54:46,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:54:46,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:54:46,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:54:46,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:54:46,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:54:46,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:54:46,035 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:54:46,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:54:46,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:54:46,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:54:46,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:54:46,038 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:54:46,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:54:46,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:54:46,040 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:54:46,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:54:46,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:54:46,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:54:46,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:54:46,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:54:46,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:54:46,043 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:54:46,044 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:54:46,044 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:54:46,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:54:46,045 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:54:46,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:54:46,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:54:46,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:54:46,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:54:46,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:54:46,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:54:46,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:54:46,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:54:46,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:54:46,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:54:46,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:54:46,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:54:46,049 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:54:46,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:54:46,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:54:46,050 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_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2023-11-29 04:54:46,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:54:46,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:54:46,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:54:46,289 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:54:46,289 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:54:46,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2023-11-29 04:54:49,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:54:49,225 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:54:49,226 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/sv-benchmarks/c/weaver/fibonacci.wvr.c [2023-11-29 04:54:49,235 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/data/73d79f382/0433bca6cd4b462da446071afc4ef04e/FLAGb86136489 [2023-11-29 04:54:49,249 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/data/73d79f382/0433bca6cd4b462da446071afc4ef04e [2023-11-29 04:54:49,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:54:49,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:54:49,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:54:49,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:54:49,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:54:49,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a536919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49, skipping insertion in model container [2023-11-29 04:54:49,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,288 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:54:49,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:54:49,469 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:54:49,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:54:49,509 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:54:49,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49 WrapperNode [2023-11-29 04:54:49,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:54:49,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:54:49,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:54:49,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:54:49,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,557 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 234 [2023-11-29 04:54:49,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:54:49,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:54:49,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:54:49,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:54:49,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,587 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 04:54:49,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:54:49,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:54:49,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:54:49,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:54:49,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (1/1) ... [2023-11-29 04:54:49,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:54:49,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:54:49,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:54:49,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:54:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:54:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:54:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:54:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:54:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:54:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:54:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:54:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:54:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:54:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:54:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:54:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:54:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:54:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:54:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:54:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:54:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:54:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:54:49,677 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:54:49,812 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:54:49,815 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:54:50,189 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:54:50,434 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:54:50,435 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:54:50,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:54:50 BoogieIcfgContainer [2023-11-29 04:54:50,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:54:50,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:54:50,438 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:54:50,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:54:50,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:54:49" (1/3) ... [2023-11-29 04:54:50,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ffbaec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:54:50, skipping insertion in model container [2023-11-29 04:54:50,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:54:49" (2/3) ... [2023-11-29 04:54:50,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ffbaec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:54:50, skipping insertion in model container [2023-11-29 04:54:50,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:54:50" (3/3) ... [2023-11-29 04:54:50,443 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-11-29 04:54:50,450 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:54:50,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:54:50,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-29 04:54:50,458 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:54:50,528 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:54:50,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 208 flow [2023-11-29 04:54:50,610 INFO L124 PetriNetUnfolderBase]: 10/95 cut-off events. [2023-11-29 04:54:50,610 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:54:50,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 10/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 312 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-11-29 04:54:50,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 97 transitions, 208 flow [2023-11-29 04:54:50,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 93 transitions, 195 flow [2023-11-29 04:54:50,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:54:50,638 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@ba21961, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:54:50,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-11-29 04:54:50,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:54:50,645 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-29 04:54:50,645 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:54:50,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:50,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:54:50,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:50,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash 129799372, now seen corresponding path program 1 times [2023-11-29 04:54:50,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928433737] [2023-11-29 04:54:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:50,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928433737] [2023-11-29 04:54:50,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928433737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:50,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:50,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:50,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250429068] [2023-11-29 04:54:50,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:50,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:50,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:50,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:50,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:54:50,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:50,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:50,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:54:50,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:51,465 INFO L124 PetriNetUnfolderBase]: 1075/2651 cut-off events. [2023-11-29 04:54:51,465 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-29 04:54:51,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4324 conditions, 2651 events. 1075/2651 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 20482 event pairs, 387 based on Foata normal form. 60/2143 useless extension candidates. Maximal degree in co-relation 4184. Up to 952 conditions per place. [2023-11-29 04:54:51,492 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 73 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2023-11-29 04:54:51,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 431 flow [2023-11-29 04:54:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-11-29 04:54:51,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7654639175257731 [2023-11-29 04:54:51,508 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-11-29 04:54:51,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-11-29 04:54:51,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:51,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-11-29 04:54:51,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:51,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:51,521 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:51,523 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 195 flow. Second operand 4 states and 297 transitions. [2023-11-29 04:54:51,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 431 flow [2023-11-29 04:54:51,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 130 transitions, 424 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:54:51,532 INFO L231 Difference]: Finished difference. Result has 92 places, 95 transitions, 224 flow [2023-11-29 04:54:51,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=92, PETRI_TRANSITIONS=95} [2023-11-29 04:54:51,538 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-11-29 04:54:51,538 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 95 transitions, 224 flow [2023-11-29 04:54:51,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:51,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:51,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:51,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:54:51,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:51,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:51,540 INFO L85 PathProgramCache]: Analyzing trace with hash -271185980, now seen corresponding path program 1 times [2023-11-29 04:54:51,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:51,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008860597] [2023-11-29 04:54:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:51,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:51,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008860597] [2023-11-29 04:54:51,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008860597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:51,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:51,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:54:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659243428] [2023-11-29 04:54:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:51,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:51,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:51,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 97 [2023-11-29 04:54:51,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 95 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:51,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:51,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 97 [2023-11-29 04:54:51,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:52,053 INFO L124 PetriNetUnfolderBase]: 887/2248 cut-off events. [2023-11-29 04:54:52,053 INFO L125 PetriNetUnfolderBase]: For 370/378 co-relation queries the response was YES. [2023-11-29 04:54:52,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3980 conditions, 2248 events. 887/2248 cut-off events. For 370/378 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 16686 event pairs, 311 based on Foata normal form. 8/1887 useless extension candidates. Maximal degree in co-relation 3544. Up to 688 conditions per place. [2023-11-29 04:54:52,075 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 51 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-11-29 04:54:52,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 368 flow [2023-11-29 04:54:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:52,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2023-11-29 04:54:52,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7268041237113402 [2023-11-29 04:54:52,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 282 transitions. [2023-11-29 04:54:52,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 282 transitions. [2023-11-29 04:54:52,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:52,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 282 transitions. [2023-11-29 04:54:52,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,084 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,084 INFO L175 Difference]: Start difference. First operand has 92 places, 95 transitions, 224 flow. Second operand 4 states and 282 transitions. [2023-11-29 04:54:52,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 368 flow [2023-11-29 04:54:52,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 111 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:54:52,092 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 230 flow [2023-11-29 04:54:52,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2023-11-29 04:54:52,094 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 4 predicate places. [2023-11-29 04:54:52,094 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 230 flow [2023-11-29 04:54:52,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:52,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:54:52,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:52,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash -509195714, now seen corresponding path program 1 times [2023-11-29 04:54:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:52,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150926301] [2023-11-29 04:54:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:52,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:52,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150926301] [2023-11-29 04:54:52,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150926301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:52,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:52,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:52,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131242329] [2023-11-29 04:54:52,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:52,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:52,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:52,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:52,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:54:52,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:52,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:54:52,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:52,649 INFO L124 PetriNetUnfolderBase]: 1267/3007 cut-off events. [2023-11-29 04:54:52,650 INFO L125 PetriNetUnfolderBase]: For 806/869 co-relation queries the response was YES. [2023-11-29 04:54:52,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 3007 events. 1267/3007 cut-off events. For 806/869 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 23454 event pairs, 480 based on Foata normal form. 101/2549 useless extension candidates. Maximal degree in co-relation 4950. Up to 1149 conditions per place. [2023-11-29 04:54:52,676 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 79 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2023-11-29 04:54:52,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 135 transitions, 530 flow [2023-11-29 04:54:52,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:52,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-11-29 04:54:52,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7654639175257731 [2023-11-29 04:54:52,679 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-11-29 04:54:52,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-11-29 04:54:52,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:52,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-11-29 04:54:52,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,683 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,683 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 230 flow. Second operand 4 states and 297 transitions. [2023-11-29 04:54:52,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 135 transitions, 530 flow [2023-11-29 04:54:52,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 135 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:54:52,690 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 256 flow [2023-11-29 04:54:52,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2023-11-29 04:54:52,691 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 6 predicate places. [2023-11-29 04:54:52,691 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 256 flow [2023-11-29 04:54:52,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:52,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:52,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:54:52,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:52,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash 183138224, now seen corresponding path program 1 times [2023-11-29 04:54:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:52,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007524733] [2023-11-29 04:54:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:52,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007524733] [2023-11-29 04:54:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007524733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:52,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:54:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468550382] [2023-11-29 04:54:52,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:52,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:52,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 97 [2023-11-29 04:54:52,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:52,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 97 [2023-11-29 04:54:52,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:53,140 INFO L124 PetriNetUnfolderBase]: 1062/2679 cut-off events. [2023-11-29 04:54:53,140 INFO L125 PetriNetUnfolderBase]: For 933/965 co-relation queries the response was YES. [2023-11-29 04:54:53,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5151 conditions, 2679 events. 1062/2679 cut-off events. For 933/965 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 20735 event pairs, 379 based on Foata normal form. 54/2388 useless extension candidates. Maximal degree in co-relation 4642. Up to 846 conditions per place. [2023-11-29 04:54:53,165 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 56 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-11-29 04:54:53,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 114 transitions, 430 flow [2023-11-29 04:54:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2023-11-29 04:54:53,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164948453608248 [2023-11-29 04:54:53,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 278 transitions. [2023-11-29 04:54:53,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 278 transitions. [2023-11-29 04:54:53,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:53,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 278 transitions. [2023-11-29 04:54:53,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,171 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 256 flow. Second operand 4 states and 278 transitions. [2023-11-29 04:54:53,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 114 transitions, 430 flow [2023-11-29 04:54:53,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 114 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:54:53,180 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 260 flow [2023-11-29 04:54:53,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2023-11-29 04:54:53,181 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2023-11-29 04:54:53,182 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 260 flow [2023-11-29 04:54:53,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:53,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:53,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:54:53,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:53,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1394802877, now seen corresponding path program 1 times [2023-11-29 04:54:53,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:53,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005203143] [2023-11-29 04:54:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:53,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:53,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005203143] [2023-11-29 04:54:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005203143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:53,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:53,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:54:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860350624] [2023-11-29 04:54:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:53,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 97 [2023-11-29 04:54:53,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:53,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 97 [2023-11-29 04:54:53,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:53,623 INFO L124 PetriNetUnfolderBase]: 1028/2719 cut-off events. [2023-11-29 04:54:53,623 INFO L125 PetriNetUnfolderBase]: For 1050/1075 co-relation queries the response was YES. [2023-11-29 04:54:53,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 2719 events. 1028/2719 cut-off events. For 1050/1075 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 21888 event pairs, 331 based on Foata normal form. 25/2334 useless extension candidates. Maximal degree in co-relation 4656. Up to 825 conditions per place. [2023-11-29 04:54:53,649 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 55 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2023-11-29 04:54:53,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 113 transitions, 439 flow [2023-11-29 04:54:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2023-11-29 04:54:53,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7268041237113402 [2023-11-29 04:54:53,651 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 282 transitions. [2023-11-29 04:54:53,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 282 transitions. [2023-11-29 04:54:53,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:53,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 282 transitions. [2023-11-29 04:54:53,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,655 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,655 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 260 flow. Second operand 4 states and 282 transitions. [2023-11-29 04:54:53,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 113 transitions, 439 flow [2023-11-29 04:54:53,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 113 transitions, 425 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:54:53,663 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 258 flow [2023-11-29 04:54:53,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2023-11-29 04:54:53,664 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 7 predicate places. [2023-11-29 04:54:53,664 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 258 flow [2023-11-29 04:54:53,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:53,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:53,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:54:53,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:53,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1382317414, now seen corresponding path program 1 times [2023-11-29 04:54:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:53,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847498834] [2023-11-29 04:54:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:53,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:53,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:53,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847498834] [2023-11-29 04:54:53,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847498834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:53,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:53,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:53,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143428726] [2023-11-29 04:54:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:53,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:54:53,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:54:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:54:53,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 97 [2023-11-29 04:54:53,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:53,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 97 [2023-11-29 04:54:53,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:54,253 INFO L124 PetriNetUnfolderBase]: 1343/2958 cut-off events. [2023-11-29 04:54:54,253 INFO L125 PetriNetUnfolderBase]: For 1104/1146 co-relation queries the response was YES. [2023-11-29 04:54:54,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6087 conditions, 2958 events. 1343/2958 cut-off events. For 1104/1146 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 21686 event pairs, 355 based on Foata normal form. 24/2673 useless extension candidates. Maximal degree in co-relation 5538. Up to 862 conditions per place. [2023-11-29 04:54:54,279 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 75 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-11-29 04:54:54,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 131 transitions, 546 flow [2023-11-29 04:54:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:54:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:54:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 350 transitions. [2023-11-29 04:54:54,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2023-11-29 04:54:54,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 350 transitions. [2023-11-29 04:54:54,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 350 transitions. [2023-11-29 04:54:54,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:54,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 350 transitions. [2023-11-29 04:54:54,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,286 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 258 flow. Second operand 5 states and 350 transitions. [2023-11-29 04:54:54,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 131 transitions, 546 flow [2023-11-29 04:54:54,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 131 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:54:54,294 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 260 flow [2023-11-29 04:54:54,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2023-11-29 04:54:54,295 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 7 predicate places. [2023-11-29 04:54:54,295 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 260 flow [2023-11-29 04:54:54,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:54,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:54,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:54:54,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:54,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1382318439, now seen corresponding path program 1 times [2023-11-29 04:54:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344306425] [2023-11-29 04:54:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:54,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344306425] [2023-11-29 04:54:54,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344306425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:54,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:54,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:54,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991362558] [2023-11-29 04:54:54,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:54,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:54,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:54,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:54,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:54:54,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:54,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:54:54,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:54,712 INFO L124 PetriNetUnfolderBase]: 1128/2795 cut-off events. [2023-11-29 04:54:54,712 INFO L125 PetriNetUnfolderBase]: For 1225/1249 co-relation queries the response was YES. [2023-11-29 04:54:54,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5543 conditions, 2795 events. 1128/2795 cut-off events. For 1225/1249 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21665 event pairs, 526 based on Foata normal form. 50/2492 useless extension candidates. Maximal degree in co-relation 5020. Up to 1200 conditions per place. [2023-11-29 04:54:54,731 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 77 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2023-11-29 04:54:54,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 131 transitions, 534 flow [2023-11-29 04:54:54,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:54,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2023-11-29 04:54:54,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7525773195876289 [2023-11-29 04:54:54,733 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2023-11-29 04:54:54,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2023-11-29 04:54:54,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:54,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2023-11-29 04:54:54,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,736 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,737 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 260 flow. Second operand 4 states and 292 transitions. [2023-11-29 04:54:54,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 131 transitions, 534 flow [2023-11-29 04:54:54,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 522 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:54:54,744 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 250 flow [2023-11-29 04:54:54,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2023-11-29 04:54:54,745 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 6 predicate places. [2023-11-29 04:54:54,745 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 250 flow [2023-11-29 04:54:54,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:54,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:54,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:54:54,746 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:54,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash 289185282, now seen corresponding path program 1 times [2023-11-29 04:54:54,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:54,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686985703] [2023-11-29 04:54:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:54,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:54,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:54,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686985703] [2023-11-29 04:54:54,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686985703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:54,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:54,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:54:54,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969275756] [2023-11-29 04:54:54,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:54,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:54,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:54,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:54,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 97 [2023-11-29 04:54:54,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:54,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:54,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 97 [2023-11-29 04:54:54,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:55,096 INFO L124 PetriNetUnfolderBase]: 1025/2663 cut-off events. [2023-11-29 04:54:55,096 INFO L125 PetriNetUnfolderBase]: For 1046/1071 co-relation queries the response was YES. [2023-11-29 04:54:55,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5070 conditions, 2663 events. 1025/2663 cut-off events. For 1046/1071 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 21086 event pairs, 331 based on Foata normal form. 59/2331 useless extension candidates. Maximal degree in co-relation 4571. Up to 825 conditions per place. [2023-11-29 04:54:55,108 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 56 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-11-29 04:54:55,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 110 transitions, 428 flow [2023-11-29 04:54:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:55,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2023-11-29 04:54:55,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164948453608248 [2023-11-29 04:54:55,110 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 278 transitions. [2023-11-29 04:54:55,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 278 transitions. [2023-11-29 04:54:55,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:55,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 278 transitions. [2023-11-29 04:54:55,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,112 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,112 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 250 flow. Second operand 4 states and 278 transitions. [2023-11-29 04:54:55,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 110 transitions, 428 flow [2023-11-29 04:54:55,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 110 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:54:55,117 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 248 flow [2023-11-29 04:54:55,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2023-11-29 04:54:55,118 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 6 predicate places. [2023-11-29 04:54:55,118 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 248 flow [2023-11-29 04:54:55,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:55,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:55,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:54:55,119 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:55,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:55,120 INFO L85 PathProgramCache]: Analyzing trace with hash -97832333, now seen corresponding path program 1 times [2023-11-29 04:54:55,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:55,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476811425] [2023-11-29 04:54:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:55,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:55,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476811425] [2023-11-29 04:54:55,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476811425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:55,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:55,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:54:55,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818914258] [2023-11-29 04:54:55,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:55,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:54:55,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:54:55,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:54:55,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 97 [2023-11-29 04:54:55,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:55,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 97 [2023-11-29 04:54:55,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:55,628 INFO L124 PetriNetUnfolderBase]: 1309/2854 cut-off events. [2023-11-29 04:54:55,629 INFO L125 PetriNetUnfolderBase]: For 1316/1346 co-relation queries the response was YES. [2023-11-29 04:54:55,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5872 conditions, 2854 events. 1309/2854 cut-off events. For 1316/1346 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 20653 event pairs, 349 based on Foata normal form. 98/2651 useless extension candidates. Maximal degree in co-relation 5336. Up to 846 conditions per place. [2023-11-29 04:54:55,644 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 91 selfloop transitions, 9 changer transitions 0/148 dead transitions. [2023-11-29 04:54:55,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 640 flow [2023-11-29 04:54:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:54:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:54:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2023-11-29 04:54:55,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6924398625429553 [2023-11-29 04:54:55,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2023-11-29 04:54:55,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2023-11-29 04:54:55,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:55,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2023-11-29 04:54:55,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,650 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 248 flow. Second operand 6 states and 403 transitions. [2023-11-29 04:54:55,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 640 flow [2023-11-29 04:54:55,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 614 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:54:55,655 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 265 flow [2023-11-29 04:54:55,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-11-29 04:54:55,656 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2023-11-29 04:54:55,656 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 265 flow [2023-11-29 04:54:55,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:55,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:55,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:54:55,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:55,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:55,658 INFO L85 PathProgramCache]: Analyzing trace with hash 374809984, now seen corresponding path program 1 times [2023-11-29 04:54:55,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:55,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202207895] [2023-11-29 04:54:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:55,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:55,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202207895] [2023-11-29 04:54:55,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202207895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:55,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:55,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:55,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509910418] [2023-11-29 04:54:55,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:55,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:55,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:55,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:54:55,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:55,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:55,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:54:55,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:56,032 INFO L124 PetriNetUnfolderBase]: 1111/2743 cut-off events. [2023-11-29 04:54:56,032 INFO L125 PetriNetUnfolderBase]: For 1911/1997 co-relation queries the response was YES. [2023-11-29 04:54:56,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5579 conditions, 2743 events. 1111/2743 cut-off events. For 1911/1997 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 21453 event pairs, 527 based on Foata normal form. 110/2481 useless extension candidates. Maximal degree in co-relation 5040. Up to 1201 conditions per place. [2023-11-29 04:54:56,045 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 80 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2023-11-29 04:54:56,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 581 flow [2023-11-29 04:54:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2023-11-29 04:54:56,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7525773195876289 [2023-11-29 04:54:56,048 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2023-11-29 04:54:56,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2023-11-29 04:54:56,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:56,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2023-11-29 04:54:56,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,050 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,050 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 265 flow. Second operand 4 states and 292 transitions. [2023-11-29 04:54:56,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 581 flow [2023-11-29 04:54:56,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 547 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:54:56,055 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 251 flow [2023-11-29 04:54:56,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-11-29 04:54:56,056 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 6 predicate places. [2023-11-29 04:54:56,056 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 251 flow [2023-11-29 04:54:56,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:56,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:56,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:54:56,057 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:56,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:56,058 INFO L85 PathProgramCache]: Analyzing trace with hash 374808959, now seen corresponding path program 1 times [2023-11-29 04:54:56,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:56,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470937750] [2023-11-29 04:54:56,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:56,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470937750] [2023-11-29 04:54:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470937750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:56,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:56,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200530833] [2023-11-29 04:54:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:56,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:54:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:56,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:54:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:54:56,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 97 [2023-11-29 04:54:56,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:56,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 97 [2023-11-29 04:54:56,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:56,507 INFO L124 PetriNetUnfolderBase]: 1285/2839 cut-off events. [2023-11-29 04:54:56,507 INFO L125 PetriNetUnfolderBase]: For 1250/1366 co-relation queries the response was YES. [2023-11-29 04:54:56,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 2839 events. 1285/2839 cut-off events. For 1250/1366 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 20863 event pairs, 335 based on Foata normal form. 96/2631 useless extension candidates. Maximal degree in co-relation 5363. Up to 862 conditions per place. [2023-11-29 04:54:56,526 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 78 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2023-11-29 04:54:56,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 551 flow [2023-11-29 04:54:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:54:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:54:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 350 transitions. [2023-11-29 04:54:56,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2023-11-29 04:54:56,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 350 transitions. [2023-11-29 04:54:56,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 350 transitions. [2023-11-29 04:54:56,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:56,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 350 transitions. [2023-11-29 04:54:56,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,534 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 251 flow. Second operand 5 states and 350 transitions. [2023-11-29 04:54:56,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 551 flow [2023-11-29 04:54:56,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 545 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:54:56,542 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 255 flow [2023-11-29 04:54:56,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2023-11-29 04:54:56,543 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 7 predicate places. [2023-11-29 04:54:56,543 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 255 flow [2023-11-29 04:54:56,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:56,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:56,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:54:56,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:56,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2085484436, now seen corresponding path program 1 times [2023-11-29 04:54:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:56,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330623833] [2023-11-29 04:54:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:56,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:56,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330623833] [2023-11-29 04:54:56,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330623833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:56,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:56,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:54:56,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48291100] [2023-11-29 04:54:56,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:56,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:54:56,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:54:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:54:56,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 97 [2023-11-29 04:54:56,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:56,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:56,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 97 [2023-11-29 04:54:56,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:57,027 INFO L124 PetriNetUnfolderBase]: 1264/2775 cut-off events. [2023-11-29 04:54:57,027 INFO L125 PetriNetUnfolderBase]: For 1424/1454 co-relation queries the response was YES. [2023-11-29 04:54:57,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5854 conditions, 2775 events. 1264/2775 cut-off events. For 1424/1454 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 20002 event pairs, 500 based on Foata normal form. 64/2556 useless extension candidates. Maximal degree in co-relation 5320. Up to 1216 conditions per place. [2023-11-29 04:54:57,046 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 114 selfloop transitions, 8 changer transitions 0/166 dead transitions. [2023-11-29 04:54:57,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 166 transitions, 757 flow [2023-11-29 04:54:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:54:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:54:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 425 transitions. [2023-11-29 04:54:57,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7302405498281787 [2023-11-29 04:54:57,048 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 425 transitions. [2023-11-29 04:54:57,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 425 transitions. [2023-11-29 04:54:57,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:57,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 425 transitions. [2023-11-29 04:54:57,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,052 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,052 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 255 flow. Second operand 6 states and 425 transitions. [2023-11-29 04:54:57,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 166 transitions, 757 flow [2023-11-29 04:54:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 166 transitions, 719 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 04:54:57,089 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 270 flow [2023-11-29 04:54:57,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2023-11-29 04:54:57,090 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-11-29 04:54:57,090 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 270 flow [2023-11-29 04:54:57,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:57,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:57,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:54:57,091 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:57,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:57,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1265823323, now seen corresponding path program 1 times [2023-11-29 04:54:57,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:57,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450502250] [2023-11-29 04:54:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:57,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:57,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450502250] [2023-11-29 04:54:57,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450502250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:57,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:57,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:54:57,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669124134] [2023-11-29 04:54:57,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:57,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:54:57,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:57,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:54:57,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:54:57,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 97 [2023-11-29 04:54:57,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:57,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 97 [2023-11-29 04:54:57,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:57,589 INFO L124 PetriNetUnfolderBase]: 1285/2757 cut-off events. [2023-11-29 04:54:57,589 INFO L125 PetriNetUnfolderBase]: For 2310/2406 co-relation queries the response was YES. [2023-11-29 04:54:57,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6009 conditions, 2757 events. 1285/2757 cut-off events. For 2310/2406 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19639 event pairs, 335 based on Foata normal form. 164/2617 useless extension candidates. Maximal degree in co-relation 5455. Up to 832 conditions per place. [2023-11-29 04:54:57,604 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 99 selfloop transitions, 9 changer transitions 0/153 dead transitions. [2023-11-29 04:54:57,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 153 transitions, 738 flow [2023-11-29 04:54:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:54:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:54:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2023-11-29 04:54:57,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6924398625429553 [2023-11-29 04:54:57,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2023-11-29 04:54:57,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2023-11-29 04:54:57,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:57,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2023-11-29 04:54:57,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,611 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 270 flow. Second operand 6 states and 403 transitions. [2023-11-29 04:54:57,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 153 transitions, 738 flow [2023-11-29 04:54:57,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 153 transitions, 686 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-29 04:54:57,620 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 279 flow [2023-11-29 04:54:57,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2023-11-29 04:54:57,620 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 10 predicate places. [2023-11-29 04:54:57,621 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 279 flow [2023-11-29 04:54:57,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:57,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:57,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:54:57,621 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:57,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash 472433942, now seen corresponding path program 1 times [2023-11-29 04:54:57,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:57,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054086454] [2023-11-29 04:54:57,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:57,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:57,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054086454] [2023-11-29 04:54:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054086454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:57,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:57,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:57,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398916201] [2023-11-29 04:54:57,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:57,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:57,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:57,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:57,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:57,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:54:57,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:57,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:57,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:54:57,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:58,057 INFO L124 PetriNetUnfolderBase]: 1445/3301 cut-off events. [2023-11-29 04:54:58,057 INFO L125 PetriNetUnfolderBase]: For 2550/2679 co-relation queries the response was YES. [2023-11-29 04:54:58,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 3301 events. 1445/3301 cut-off events. For 2550/2679 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 25275 event pairs, 637 based on Foata normal form. 183/3091 useless extension candidates. Maximal degree in co-relation 6530. Up to 1410 conditions per place. [2023-11-29 04:54:58,080 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 85 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2023-11-29 04:54:58,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 133 transitions, 621 flow [2023-11-29 04:54:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-11-29 04:54:58,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7654639175257731 [2023-11-29 04:54:58,083 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-11-29 04:54:58,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-11-29 04:54:58,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:58,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-11-29 04:54:58,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,086 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,086 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 279 flow. Second operand 4 states and 297 transitions. [2023-11-29 04:54:58,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 133 transitions, 621 flow [2023-11-29 04:54:58,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 133 transitions, 590 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:54:58,096 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 304 flow [2023-11-29 04:54:58,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2023-11-29 04:54:58,097 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 11 predicate places. [2023-11-29 04:54:58,097 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 304 flow [2023-11-29 04:54:58,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:58,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:58,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:54:58,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:58,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash 361500581, now seen corresponding path program 1 times [2023-11-29 04:54:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:58,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662479048] [2023-11-29 04:54:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:58,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:58,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662479048] [2023-11-29 04:54:58,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662479048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:58,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:58,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:58,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526489249] [2023-11-29 04:54:58,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:58,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:58,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:58,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:58,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:58,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:54:58,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:58,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:54:58,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:58,522 INFO L124 PetriNetUnfolderBase]: 1438/3197 cut-off events. [2023-11-29 04:54:58,522 INFO L125 PetriNetUnfolderBase]: For 2891/3060 co-relation queries the response was YES. [2023-11-29 04:54:58,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7239 conditions, 3197 events. 1438/3197 cut-off events. For 2891/3060 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 24033 event pairs, 605 based on Foata normal form. 175/3075 useless extension candidates. Maximal degree in co-relation 6607. Up to 1396 conditions per place. [2023-11-29 04:54:58,539 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 88 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2023-11-29 04:54:58,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 685 flow [2023-11-29 04:54:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:54:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:54:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2023-11-29 04:54:58,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7474226804123711 [2023-11-29 04:54:58,542 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2023-11-29 04:54:58,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2023-11-29 04:54:58,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:58,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2023-11-29 04:54:58,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,545 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 304 flow. Second operand 4 states and 290 transitions. [2023-11-29 04:54:58,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 138 transitions, 685 flow [2023-11-29 04:54:58,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:54:58,557 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 314 flow [2023-11-29 04:54:58,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2023-11-29 04:54:58,557 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 13 predicate places. [2023-11-29 04:54:58,558 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 314 flow [2023-11-29 04:54:58,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:58,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:58,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:54:58,558 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:58,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1760551116, now seen corresponding path program 1 times [2023-11-29 04:54:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:58,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400933812] [2023-11-29 04:54:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:58,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:58,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400933812] [2023-11-29 04:54:58,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400933812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:58,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:58,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:54:58,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984927130] [2023-11-29 04:54:58,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:58,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:54:58,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:58,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:54:58,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:54:58,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2023-11-29 04:54:58,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:58,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:58,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2023-11-29 04:54:58,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:59,349 INFO L124 PetriNetUnfolderBase]: 2234/5105 cut-off events. [2023-11-29 04:54:59,349 INFO L125 PetriNetUnfolderBase]: For 4728/4894 co-relation queries the response was YES. [2023-11-29 04:54:59,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11824 conditions, 5105 events. 2234/5105 cut-off events. For 4728/4894 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 42508 event pairs, 563 based on Foata normal form. 238/4886 useless extension candidates. Maximal degree in co-relation 10984. Up to 1321 conditions per place. [2023-11-29 04:54:59,384 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 154 selfloop transitions, 14 changer transitions 0/208 dead transitions. [2023-11-29 04:54:59,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 208 transitions, 1100 flow [2023-11-29 04:54:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:54:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:54:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 487 transitions. [2023-11-29 04:54:59,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7172312223858616 [2023-11-29 04:54:59,386 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 487 transitions. [2023-11-29 04:54:59,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 487 transitions. [2023-11-29 04:54:59,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:59,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 487 transitions. [2023-11-29 04:54:59,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:59,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:59,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:59,390 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 314 flow. Second operand 7 states and 487 transitions. [2023-11-29 04:54:59,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 208 transitions, 1100 flow [2023-11-29 04:54:59,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 208 transitions, 1076 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:54:59,416 INFO L231 Difference]: Finished difference. Result has 110 places, 98 transitions, 392 flow [2023-11-29 04:54:59,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=392, PETRI_PLACES=110, PETRI_TRANSITIONS=98} [2023-11-29 04:54:59,416 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 20 predicate places. [2023-11-29 04:54:59,416 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 392 flow [2023-11-29 04:54:59,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:59,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:59,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:54:59,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:54:59,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:59,417 INFO L85 PathProgramCache]: Analyzing trace with hash -980441816, now seen corresponding path program 1 times [2023-11-29 04:54:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:59,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115085349] [2023-11-29 04:54:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:59,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:59,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:59,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115085349] [2023-11-29 04:54:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115085349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:59,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:59,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:54:59,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381978074] [2023-11-29 04:54:59,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:59,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:54:59,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:59,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:54:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:54:59,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:54:59,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:59,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:59,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:54:59,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:00,038 INFO L124 PetriNetUnfolderBase]: 2602/5976 cut-off events. [2023-11-29 04:55:00,039 INFO L125 PetriNetUnfolderBase]: For 8112/8528 co-relation queries the response was YES. [2023-11-29 04:55:00,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14138 conditions, 5976 events. 2602/5976 cut-off events. For 8112/8528 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 51595 event pairs, 1242 based on Foata normal form. 376/5656 useless extension candidates. Maximal degree in co-relation 13225. Up to 2565 conditions per place. [2023-11-29 04:55:00,065 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 108 selfloop transitions, 7 changer transitions 0/157 dead transitions. [2023-11-29 04:55:00,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 157 transitions, 950 flow [2023-11-29 04:55:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-11-29 04:55:00,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7654639175257731 [2023-11-29 04:55:00,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-11-29 04:55:00,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-11-29 04:55:00,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:00,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-11-29 04:55:00,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,069 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,069 INFO L175 Difference]: Start difference. First operand has 110 places, 98 transitions, 392 flow. Second operand 4 states and 297 transitions. [2023-11-29 04:55:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 157 transitions, 950 flow [2023-11-29 04:55:00,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 157 transitions, 933 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-29 04:55:00,091 INFO L231 Difference]: Finished difference. Result has 114 places, 100 transitions, 427 flow [2023-11-29 04:55:00,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2023-11-29 04:55:00,091 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 24 predicate places. [2023-11-29 04:55:00,091 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 427 flow [2023-11-29 04:55:00,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:00,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:00,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:55:00,092 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:00,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1257521222, now seen corresponding path program 1 times [2023-11-29 04:55:00,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:00,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030088382] [2023-11-29 04:55:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:00,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:00,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:00,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030088382] [2023-11-29 04:55:00,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030088382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:00,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:00,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:55:00,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752089840] [2023-11-29 04:55:00,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:00,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:55:00,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:00,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:55:00,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:55:00,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:55:00,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:00,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:55:00,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:00,828 INFO L124 PetriNetUnfolderBase]: 2898/7046 cut-off events. [2023-11-29 04:55:00,828 INFO L125 PetriNetUnfolderBase]: For 10992/11306 co-relation queries the response was YES. [2023-11-29 04:55:00,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17351 conditions, 7046 events. 2898/7046 cut-off events. For 10992/11306 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 64622 event pairs, 791 based on Foata normal form. 338/6736 useless extension candidates. Maximal degree in co-relation 16285. Up to 1871 conditions per place. [2023-11-29 04:55:00,866 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 124 selfloop transitions, 10 changer transitions 0/175 dead transitions. [2023-11-29 04:55:00,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 175 transitions, 1047 flow [2023-11-29 04:55:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:55:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:55:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2023-11-29 04:55:00,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7628865979381443 [2023-11-29 04:55:00,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2023-11-29 04:55:00,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2023-11-29 04:55:00,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:00,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2023-11-29 04:55:00,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,871 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,872 INFO L175 Difference]: Start difference. First operand has 114 places, 100 transitions, 427 flow. Second operand 5 states and 370 transitions. [2023-11-29 04:55:00,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 175 transitions, 1047 flow [2023-11-29 04:55:00,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 175 transitions, 1047 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:55:00,985 INFO L231 Difference]: Finished difference. Result has 119 places, 101 transitions, 471 flow [2023-11-29 04:55:00,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=119, PETRI_TRANSITIONS=101} [2023-11-29 04:55:00,986 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 29 predicate places. [2023-11-29 04:55:00,986 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 101 transitions, 471 flow [2023-11-29 04:55:00,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:00,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:00,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:00,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 04:55:00,987 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:00,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash -328924379, now seen corresponding path program 1 times [2023-11-29 04:55:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:00,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584016776] [2023-11-29 04:55:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:01,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584016776] [2023-11-29 04:55:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584016776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:01,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:01,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:55:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029873840] [2023-11-29 04:55:01,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:01,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:55:01,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:55:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:55:01,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2023-11-29 04:55:01,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 101 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:01,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:01,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2023-11-29 04:55:01,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:02,337 INFO L124 PetriNetUnfolderBase]: 4635/10668 cut-off events. [2023-11-29 04:55:02,337 INFO L125 PetriNetUnfolderBase]: For 19776/20278 co-relation queries the response was YES. [2023-11-29 04:55:02,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27231 conditions, 10668 events. 4635/10668 cut-off events. For 19776/20278 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 102662 event pairs, 1193 based on Foata normal form. 510/10192 useless extension candidates. Maximal degree in co-relation 25955. Up to 2724 conditions per place. [2023-11-29 04:55:02,391 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 207 selfloop transitions, 13 changer transitions 0/261 dead transitions. [2023-11-29 04:55:02,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 261 transitions, 1964 flow [2023-11-29 04:55:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:55:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:55:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 487 transitions. [2023-11-29 04:55:02,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7172312223858616 [2023-11-29 04:55:02,393 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 487 transitions. [2023-11-29 04:55:02,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 487 transitions. [2023-11-29 04:55:02,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:02,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 487 transitions. [2023-11-29 04:55:02,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:02,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:02,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:02,397 INFO L175 Difference]: Start difference. First operand has 119 places, 101 transitions, 471 flow. Second operand 7 states and 487 transitions. [2023-11-29 04:55:02,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 261 transitions, 1964 flow [2023-11-29 04:55:02,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 261 transitions, 1896 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:55:02,496 INFO L231 Difference]: Finished difference. Result has 124 places, 106 transitions, 531 flow [2023-11-29 04:55:02,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=124, PETRI_TRANSITIONS=106} [2023-11-29 04:55:02,496 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 34 predicate places. [2023-11-29 04:55:02,496 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 106 transitions, 531 flow [2023-11-29 04:55:02,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:02,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:02,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:02,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:55:02,497 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:02,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:02,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1403990351, now seen corresponding path program 1 times [2023-11-29 04:55:02,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:02,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8468843] [2023-11-29 04:55:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:02,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:02,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:02,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8468843] [2023-11-29 04:55:02,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8468843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:02,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:02,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:55:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444709238] [2023-11-29 04:55:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:02,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:02,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:02,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 97 [2023-11-29 04:55:02,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 106 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:02,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:02,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 97 [2023-11-29 04:55:02,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:03,437 INFO L124 PetriNetUnfolderBase]: 3703/9606 cut-off events. [2023-11-29 04:55:03,437 INFO L125 PetriNetUnfolderBase]: For 20914/21504 co-relation queries the response was YES. [2023-11-29 04:55:03,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24320 conditions, 9606 events. 3703/9606 cut-off events. For 20914/21504 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 96797 event pairs, 949 based on Foata normal form. 448/9024 useless extension candidates. Maximal degree in co-relation 23069. Up to 3286 conditions per place. [2023-11-29 04:55:03,491 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 75 selfloop transitions, 11 changer transitions 0/132 dead transitions. [2023-11-29 04:55:03,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 132 transitions, 862 flow [2023-11-29 04:55:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2023-11-29 04:55:03,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7268041237113402 [2023-11-29 04:55:03,493 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 282 transitions. [2023-11-29 04:55:03,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 282 transitions. [2023-11-29 04:55:03,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:03,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 282 transitions. [2023-11-29 04:55:03,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:03,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:03,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:03,495 INFO L175 Difference]: Start difference. First operand has 124 places, 106 transitions, 531 flow. Second operand 4 states and 282 transitions. [2023-11-29 04:55:03,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 132 transitions, 862 flow [2023-11-29 04:55:03,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 132 transitions, 844 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-29 04:55:03,598 INFO L231 Difference]: Finished difference. Result has 124 places, 105 transitions, 539 flow [2023-11-29 04:55:03,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=124, PETRI_TRANSITIONS=105} [2023-11-29 04:55:03,599 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 34 predicate places. [2023-11-29 04:55:03,599 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 105 transitions, 539 flow [2023-11-29 04:55:03,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:03,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:03,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:03,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 04:55:03,600 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:03,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash -328452434, now seen corresponding path program 1 times [2023-11-29 04:55:03,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:03,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308118418] [2023-11-29 04:55:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:03,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:03,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308118418] [2023-11-29 04:55:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308118418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:03,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:03,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:55:03,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033623788] [2023-11-29 04:55:03,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:03,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:55:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:55:03,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:55:03,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2023-11-29 04:55:03,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 105 transitions, 539 flow. Second operand has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:03,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:03,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2023-11-29 04:55:03,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:05,346 INFO L124 PetriNetUnfolderBase]: 5983/11279 cut-off events. [2023-11-29 04:55:05,347 INFO L125 PetriNetUnfolderBase]: For 25442/26566 co-relation queries the response was YES. [2023-11-29 04:55:05,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32521 conditions, 11279 events. 5983/11279 cut-off events. For 25442/26566 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 93580 event pairs, 314 based on Foata normal form. 624/11443 useless extension candidates. Maximal degree in co-relation 31081. Up to 4793 conditions per place. [2023-11-29 04:55:05,405 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 157 selfloop transitions, 16 changer transitions 0/212 dead transitions. [2023-11-29 04:55:05,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 212 transitions, 1503 flow [2023-11-29 04:55:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:55:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:55:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 463 transitions. [2023-11-29 04:55:05,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6818851251840943 [2023-11-29 04:55:05,408 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 463 transitions. [2023-11-29 04:55:05,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 463 transitions. [2023-11-29 04:55:05,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:05,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 463 transitions. [2023-11-29 04:55:05,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.14285714285714) internal successors, (463), 7 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:05,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:05,411 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:05,411 INFO L175 Difference]: Start difference. First operand has 124 places, 105 transitions, 539 flow. Second operand 7 states and 463 transitions. [2023-11-29 04:55:05,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 212 transitions, 1503 flow [2023-11-29 04:55:05,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 212 transitions, 1481 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:55:05,547 INFO L231 Difference]: Finished difference. Result has 126 places, 104 transitions, 547 flow [2023-11-29 04:55:05,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=547, PETRI_PLACES=126, PETRI_TRANSITIONS=104} [2023-11-29 04:55:05,547 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 36 predicate places. [2023-11-29 04:55:05,547 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 104 transitions, 547 flow [2023-11-29 04:55:05,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:05,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:05,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:05,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 04:55:05,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:05,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:05,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1606752084, now seen corresponding path program 1 times [2023-11-29 04:55:05,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:05,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061757548] [2023-11-29 04:55:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:05,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:05,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:05,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061757548] [2023-11-29 04:55:05,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061757548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:05,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:05,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:55:05,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553913906] [2023-11-29 04:55:05,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:05,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:55:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:05,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:55:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:55:05,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:55:05,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 104 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:05,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:05,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:55:05,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:06,817 INFO L124 PetriNetUnfolderBase]: 5206/12546 cut-off events. [2023-11-29 04:55:06,817 INFO L125 PetriNetUnfolderBase]: For 31840/32447 co-relation queries the response was YES. [2023-11-29 04:55:06,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33231 conditions, 12546 events. 5206/12546 cut-off events. For 31840/32447 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 127646 event pairs, 1440 based on Foata normal form. 579/12028 useless extension candidates. Maximal degree in co-relation 31813. Up to 3345 conditions per place. [2023-11-29 04:55:06,903 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 152 selfloop transitions, 10 changer transitions 0/201 dead transitions. [2023-11-29 04:55:06,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 201 transitions, 1561 flow [2023-11-29 04:55:06,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:55:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:55:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2023-11-29 04:55:06,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7628865979381443 [2023-11-29 04:55:06,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2023-11-29 04:55:06,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2023-11-29 04:55:06,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:06,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2023-11-29 04:55:06,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:06,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:06,907 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:06,907 INFO L175 Difference]: Start difference. First operand has 126 places, 104 transitions, 547 flow. Second operand 5 states and 370 transitions. [2023-11-29 04:55:06,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 201 transitions, 1561 flow [2023-11-29 04:55:07,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 201 transitions, 1468 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:55:07,062 INFO L231 Difference]: Finished difference. Result has 126 places, 105 transitions, 564 flow [2023-11-29 04:55:07,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=564, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2023-11-29 04:55:07,063 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 36 predicate places. [2023-11-29 04:55:07,063 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 564 flow [2023-11-29 04:55:07,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:07,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:07,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:07,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 04:55:07,063 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:07,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1297951787, now seen corresponding path program 1 times [2023-11-29 04:55:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:07,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112188939] [2023-11-29 04:55:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:07,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:07,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:07,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112188939] [2023-11-29 04:55:07,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112188939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:07,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:07,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:55:07,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974346208] [2023-11-29 04:55:07,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:07,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:07,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:07,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:07,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:07,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 97 [2023-11-29 04:55:07,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:07,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:07,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 97 [2023-11-29 04:55:07,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:08,094 INFO L124 PetriNetUnfolderBase]: 4639/11436 cut-off events. [2023-11-29 04:55:08,094 INFO L125 PetriNetUnfolderBase]: For 29241/29793 co-relation queries the response was YES. [2023-11-29 04:55:08,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30303 conditions, 11436 events. 4639/11436 cut-off events. For 29241/29793 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 115724 event pairs, 1186 based on Foata normal form. 508/11116 useless extension candidates. Maximal degree in co-relation 28921. Up to 4209 conditions per place. [2023-11-29 04:55:08,186 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 80 selfloop transitions, 11 changer transitions 0/133 dead transitions. [2023-11-29 04:55:08,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 133 transitions, 940 flow [2023-11-29 04:55:08,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2023-11-29 04:55:08,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164948453608248 [2023-11-29 04:55:08,188 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 278 transitions. [2023-11-29 04:55:08,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 278 transitions. [2023-11-29 04:55:08,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:08,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 278 transitions. [2023-11-29 04:55:08,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:08,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:08,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:08,190 INFO L175 Difference]: Start difference. First operand has 126 places, 105 transitions, 564 flow. Second operand 4 states and 278 transitions. [2023-11-29 04:55:08,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 133 transitions, 940 flow [2023-11-29 04:55:08,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 133 transitions, 916 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:55:08,396 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 565 flow [2023-11-29 04:55:08,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2023-11-29 04:55:08,396 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 35 predicate places. [2023-11-29 04:55:08,396 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 565 flow [2023-11-29 04:55:08,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:08,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:08,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:08,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 04:55:08,397 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:08,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1592090051, now seen corresponding path program 1 times [2023-11-29 04:55:08,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:08,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952084342] [2023-11-29 04:55:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:08,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:08,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952084342] [2023-11-29 04:55:08,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952084342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:08,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:08,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:55:08,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193765162] [2023-11-29 04:55:08,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:08,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:55:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:55:08,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:55:08,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 97 [2023-11-29 04:55:08,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 565 flow. Second operand has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:08,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:08,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 97 [2023-11-29 04:55:08,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:10,567 INFO L124 PetriNetUnfolderBase]: 6698/12898 cut-off events. [2023-11-29 04:55:10,567 INFO L125 PetriNetUnfolderBase]: For 37554/38372 co-relation queries the response was YES. [2023-11-29 04:55:10,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38080 conditions, 12898 events. 6698/12898 cut-off events. For 37554/38372 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 112545 event pairs, 386 based on Foata normal form. 1038/13364 useless extension candidates. Maximal degree in co-relation 36567. Up to 2870 conditions per place. [2023-11-29 04:55:10,646 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 219 selfloop transitions, 23 changer transitions 0/278 dead transitions. [2023-11-29 04:55:10,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 278 transitions, 2195 flow [2023-11-29 04:55:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:55:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:55:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2023-11-29 04:55:10,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197021764032073 [2023-11-29 04:55:10,648 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2023-11-29 04:55:10,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2023-11-29 04:55:10,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:10,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2023-11-29 04:55:10,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.111111111111114) internal successors, (541), 9 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:10,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:10,650 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:10,650 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 565 flow. Second operand 9 states and 541 transitions. [2023-11-29 04:55:10,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 278 transitions, 2195 flow [2023-11-29 04:55:10,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 278 transitions, 2173 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:55:10,835 INFO L231 Difference]: Finished difference. Result has 130 places, 104 transitions, 597 flow [2023-11-29 04:55:10,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=597, PETRI_PLACES=130, PETRI_TRANSITIONS=104} [2023-11-29 04:55:10,836 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 40 predicate places. [2023-11-29 04:55:10,836 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 104 transitions, 597 flow [2023-11-29 04:55:10,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:10,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:10,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:10,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 04:55:10,836 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:10,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:10,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1730292775, now seen corresponding path program 1 times [2023-11-29 04:55:10,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625726170] [2023-11-29 04:55:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:10,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:10,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625726170] [2023-11-29 04:55:10,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625726170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:10,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:10,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:55:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109128703] [2023-11-29 04:55:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:10,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:55:10,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:55:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:55:11,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2023-11-29 04:55:11,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 104 transitions, 597 flow. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:11,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:11,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2023-11-29 04:55:11,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:12,534 INFO L124 PetriNetUnfolderBase]: 7565/14239 cut-off events. [2023-11-29 04:55:12,534 INFO L125 PetriNetUnfolderBase]: For 48721/50095 co-relation queries the response was YES. [2023-11-29 04:55:12,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45081 conditions, 14239 events. 7565/14239 cut-off events. For 48721/50095 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 123650 event pairs, 405 based on Foata normal form. 1276/15019 useless extension candidates. Maximal degree in co-relation 43431. Up to 6030 conditions per place. [2023-11-29 04:55:12,654 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 176 selfloop transitions, 16 changer transitions 0/227 dead transitions. [2023-11-29 04:55:12,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 227 transitions, 1927 flow [2023-11-29 04:55:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:55:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:55:12,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 463 transitions. [2023-11-29 04:55:12,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6818851251840943 [2023-11-29 04:55:12,656 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 463 transitions. [2023-11-29 04:55:12,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 463 transitions. [2023-11-29 04:55:12,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:12,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 463 transitions. [2023-11-29 04:55:12,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.14285714285714) internal successors, (463), 7 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:12,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:12,659 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:12,659 INFO L175 Difference]: Start difference. First operand has 130 places, 104 transitions, 597 flow. Second operand 7 states and 463 transitions. [2023-11-29 04:55:12,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 227 transitions, 1927 flow [2023-11-29 04:55:12,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 227 transitions, 1763 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 04:55:12,899 INFO L231 Difference]: Finished difference. Result has 128 places, 103 transitions, 587 flow [2023-11-29 04:55:12,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=587, PETRI_PLACES=128, PETRI_TRANSITIONS=103} [2023-11-29 04:55:12,900 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 38 predicate places. [2023-11-29 04:55:12,900 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 103 transitions, 587 flow [2023-11-29 04:55:12,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:12,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:12,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:12,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 04:55:12,901 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:12,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash 654754858, now seen corresponding path program 1 times [2023-11-29 04:55:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:12,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425031306] [2023-11-29 04:55:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:12,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425031306] [2023-11-29 04:55:12,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425031306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:12,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:12,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:55:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226164368] [2023-11-29 04:55:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:12,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:12,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:12,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 97 [2023-11-29 04:55:12,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 103 transitions, 587 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:12,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:12,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 97 [2023-11-29 04:55:12,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:13,913 INFO L124 PetriNetUnfolderBase]: 4699/11317 cut-off events. [2023-11-29 04:55:13,913 INFO L125 PetriNetUnfolderBase]: For 34542/35301 co-relation queries the response was YES. [2023-11-29 04:55:13,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32459 conditions, 11317 events. 4699/11317 cut-off events. For 34542/35301 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 112917 event pairs, 1221 based on Foata normal form. 779/11553 useless extension candidates. Maximal degree in co-relation 31021. Up to 4130 conditions per place. [2023-11-29 04:55:13,990 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 82 selfloop transitions, 11 changer transitions 0/133 dead transitions. [2023-11-29 04:55:13,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 133 transitions, 975 flow [2023-11-29 04:55:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2023-11-29 04:55:13,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7268041237113402 [2023-11-29 04:55:13,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 282 transitions. [2023-11-29 04:55:13,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 282 transitions. [2023-11-29 04:55:13,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:13,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 282 transitions. [2023-11-29 04:55:13,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:13,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:13,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:13,995 INFO L175 Difference]: Start difference. First operand has 128 places, 103 transitions, 587 flow. Second operand 4 states and 282 transitions. [2023-11-29 04:55:13,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 133 transitions, 975 flow [2023-11-29 04:55:14,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 133 transitions, 948 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:55:14,189 INFO L231 Difference]: Finished difference. Result has 125 places, 102 transitions, 578 flow [2023-11-29 04:55:14,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=578, PETRI_PLACES=125, PETRI_TRANSITIONS=102} [2023-11-29 04:55:14,190 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 35 predicate places. [2023-11-29 04:55:14,190 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 102 transitions, 578 flow [2023-11-29 04:55:14,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:14,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:14,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:14,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 04:55:14,190 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:14,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:14,190 INFO L85 PathProgramCache]: Analyzing trace with hash -615955628, now seen corresponding path program 1 times [2023-11-29 04:55:14,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:14,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859444987] [2023-11-29 04:55:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:14,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:14,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:14,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859444987] [2023-11-29 04:55:14,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859444987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:14,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:14,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:55:14,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532902474] [2023-11-29 04:55:14,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:14,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:14,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:14,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:55:14,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 102 transitions, 578 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:14,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:14,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:55:14,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:15,336 INFO L124 PetriNetUnfolderBase]: 5517/12118 cut-off events. [2023-11-29 04:55:15,336 INFO L125 PetriNetUnfolderBase]: For 37376/38076 co-relation queries the response was YES. [2023-11-29 04:55:15,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35541 conditions, 12118 events. 5517/12118 cut-off events. For 37376/38076 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 114733 event pairs, 2167 based on Foata normal form. 632/12366 useless extension candidates. Maximal degree in co-relation 34077. Up to 4633 conditions per place. [2023-11-29 04:55:15,422 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 114 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2023-11-29 04:55:15,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 160 transitions, 1248 flow [2023-11-29 04:55:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2023-11-29 04:55:15,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7525773195876289 [2023-11-29 04:55:15,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2023-11-29 04:55:15,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2023-11-29 04:55:15,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:15,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2023-11-29 04:55:15,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:15,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:15,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:15,426 INFO L175 Difference]: Start difference. First operand has 125 places, 102 transitions, 578 flow. Second operand 4 states and 292 transitions. [2023-11-29 04:55:15,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 160 transitions, 1248 flow [2023-11-29 04:55:15,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 160 transitions, 1179 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:55:15,705 INFO L231 Difference]: Finished difference. Result has 124 places, 101 transitions, 557 flow [2023-11-29 04:55:15,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=557, PETRI_PLACES=124, PETRI_TRANSITIONS=101} [2023-11-29 04:55:15,706 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 34 predicate places. [2023-11-29 04:55:15,706 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 101 transitions, 557 flow [2023-11-29 04:55:15,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:15,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:15,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:15,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 04:55:15,707 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:15,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2110150512, now seen corresponding path program 1 times [2023-11-29 04:55:15,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:15,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196876690] [2023-11-29 04:55:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:15,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:15,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196876690] [2023-11-29 04:55:15,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196876690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:15,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:15,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:55:15,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621687763] [2023-11-29 04:55:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:15,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2023-11-29 04:55:15,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 101 transitions, 557 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:15,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:15,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2023-11-29 04:55:15,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:17,809 INFO L124 PetriNetUnfolderBase]: 9336/21667 cut-off events. [2023-11-29 04:55:17,809 INFO L125 PetriNetUnfolderBase]: For 60378/61652 co-relation queries the response was YES. [2023-11-29 04:55:17,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62566 conditions, 21667 events. 9336/21667 cut-off events. For 60378/61652 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 220210 event pairs, 5119 based on Foata normal form. 1118/22145 useless extension candidates. Maximal degree in co-relation 57568. Up to 7587 conditions per place. [2023-11-29 04:55:17,945 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 138 selfloop transitions, 10 changer transitions 0/186 dead transitions. [2023-11-29 04:55:17,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 186 transitions, 1449 flow [2023-11-29 04:55:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2023-11-29 04:55:17,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8195876288659794 [2023-11-29 04:55:17,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 318 transitions. [2023-11-29 04:55:17,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 318 transitions. [2023-11-29 04:55:17,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:17,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 318 transitions. [2023-11-29 04:55:17,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:17,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:17,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:17,948 INFO L175 Difference]: Start difference. First operand has 124 places, 101 transitions, 557 flow. Second operand 4 states and 318 transitions. [2023-11-29 04:55:17,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 186 transitions, 1449 flow [2023-11-29 04:55:18,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 186 transitions, 1424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:55:18,240 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 677 flow [2023-11-29 04:55:18,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=677, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2023-11-29 04:55:18,241 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 37 predicate places. [2023-11-29 04:55:18,241 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 677 flow [2023-11-29 04:55:18,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:18,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:18,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:18,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 04:55:18,242 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:18,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:18,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1901359705, now seen corresponding path program 1 times [2023-11-29 04:55:18,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:18,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242580212] [2023-11-29 04:55:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:18,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242580212] [2023-11-29 04:55:18,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242580212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:18,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:18,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:55:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99558461] [2023-11-29 04:55:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:18,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:18,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:18,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 97 [2023-11-29 04:55:18,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 677 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:18,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:18,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 97 [2023-11-29 04:55:18,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:20,518 INFO L124 PetriNetUnfolderBase]: 9095/21666 cut-off events. [2023-11-29 04:55:20,518 INFO L125 PetriNetUnfolderBase]: For 67888/69503 co-relation queries the response was YES. [2023-11-29 04:55:20,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61482 conditions, 21666 events. 9095/21666 cut-off events. For 67888/69503 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 224205 event pairs, 2373 based on Foata normal form. 1549/22195 useless extension candidates. Maximal degree in co-relation 34357. Up to 8130 conditions per place. [2023-11-29 04:55:20,682 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 101 selfloop transitions, 11 changer transitions 0/149 dead transitions. [2023-11-29 04:55:20,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 149 transitions, 1225 flow [2023-11-29 04:55:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2023-11-29 04:55:20,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164948453608248 [2023-11-29 04:55:20,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 278 transitions. [2023-11-29 04:55:20,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 278 transitions. [2023-11-29 04:55:20,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:20,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 278 transitions. [2023-11-29 04:55:20,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:20,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:20,686 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:20,686 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 677 flow. Second operand 4 states and 278 transitions. [2023-11-29 04:55:20,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 149 transitions, 1225 flow [2023-11-29 04:55:21,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 1219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:55:21,177 INFO L231 Difference]: Finished difference. Result has 128 places, 109 transitions, 688 flow [2023-11-29 04:55:21,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=688, PETRI_PLACES=128, PETRI_TRANSITIONS=109} [2023-11-29 04:55:21,178 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 38 predicate places. [2023-11-29 04:55:21,178 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 109 transitions, 688 flow [2023-11-29 04:55:21,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:21,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:21,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:21,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 04:55:21,179 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:21,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2099469327, now seen corresponding path program 1 times [2023-11-29 04:55:21,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:21,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873019879] [2023-11-29 04:55:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:21,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:21,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:21,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873019879] [2023-11-29 04:55:21,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873019879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:21,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:21,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:55:21,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571646592] [2023-11-29 04:55:21,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:21,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:55:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:21,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:55:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:55:21,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 97 [2023-11-29 04:55:21,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 109 transitions, 688 flow. Second operand has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:21,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:21,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 97 [2023-11-29 04:55:21,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:24,692 INFO L124 PetriNetUnfolderBase]: 13307/25166 cut-off events. [2023-11-29 04:55:24,692 INFO L125 PetriNetUnfolderBase]: For 95517/98156 co-relation queries the response was YES. [2023-11-29 04:55:24,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79839 conditions, 25166 events. 13307/25166 cut-off events. For 95517/98156 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 225755 event pairs, 789 based on Foata normal form. 3202/27439 useless extension candidates. Maximal degree in co-relation 77474. Up to 5554 conditions per place. [2023-11-29 04:55:24,900 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 295 selfloop transitions, 22 changer transitions 0/349 dead transitions. [2023-11-29 04:55:24,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 349 transitions, 3296 flow [2023-11-29 04:55:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:55:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:55:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2023-11-29 04:55:24,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197021764032073 [2023-11-29 04:55:24,902 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2023-11-29 04:55:24,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2023-11-29 04:55:24,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:24,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2023-11-29 04:55:24,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.111111111111114) internal successors, (541), 9 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:24,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:24,903 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:24,904 INFO L175 Difference]: Start difference. First operand has 128 places, 109 transitions, 688 flow. Second operand 9 states and 541 transitions. [2023-11-29 04:55:24,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 349 transitions, 3296 flow [2023-11-29 04:55:25,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 349 transitions, 3274 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:55:25,725 INFO L231 Difference]: Finished difference. Result has 133 places, 109 transitions, 718 flow [2023-11-29 04:55:25,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=718, PETRI_PLACES=133, PETRI_TRANSITIONS=109} [2023-11-29 04:55:25,726 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2023-11-29 04:55:25,726 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 109 transitions, 718 flow [2023-11-29 04:55:25,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:25,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:25,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:25,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 04:55:25,727 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:25,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:25,727 INFO L85 PathProgramCache]: Analyzing trace with hash 659040553, now seen corresponding path program 1 times [2023-11-29 04:55:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:25,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286873404] [2023-11-29 04:55:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:25,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:25,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:25,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286873404] [2023-11-29 04:55:25,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286873404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:25,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:25,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:55:25,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369007705] [2023-11-29 04:55:25,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:25,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:25,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2023-11-29 04:55:25,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 109 transitions, 718 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:25,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:25,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2023-11-29 04:55:25,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:30,257 INFO L124 PetriNetUnfolderBase]: 18625/41326 cut-off events. [2023-11-29 04:55:30,257 INFO L125 PetriNetUnfolderBase]: For 162969/166588 co-relation queries the response was YES. [2023-11-29 04:55:30,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134510 conditions, 41326 events. 18625/41326 cut-off events. For 162969/166588 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 435744 event pairs, 7125 based on Foata normal form. 3246/44360 useless extension candidates. Maximal degree in co-relation 131408. Up to 14755 conditions per place. [2023-11-29 04:55:30,600 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 169 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2023-11-29 04:55:30,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 215 transitions, 1960 flow [2023-11-29 04:55:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:30,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2023-11-29 04:55:30,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8195876288659794 [2023-11-29 04:55:30,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 318 transitions. [2023-11-29 04:55:30,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 318 transitions. [2023-11-29 04:55:30,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:30,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 318 transitions. [2023-11-29 04:55:30,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:30,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:30,603 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:30,603 INFO L175 Difference]: Start difference. First operand has 133 places, 109 transitions, 718 flow. Second operand 4 states and 318 transitions. [2023-11-29 04:55:30,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 215 transitions, 1960 flow [2023-11-29 04:55:31,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 215 transitions, 1891 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 04:55:31,562 INFO L231 Difference]: Finished difference. Result has 131 places, 118 transitions, 812 flow [2023-11-29 04:55:31,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=812, PETRI_PLACES=131, PETRI_TRANSITIONS=118} [2023-11-29 04:55:31,562 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 41 predicate places. [2023-11-29 04:55:31,562 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 118 transitions, 812 flow [2023-11-29 04:55:31,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:31,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:31,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:31,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 04:55:31,563 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:31,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2141731859, now seen corresponding path program 1 times [2023-11-29 04:55:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:31,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006465862] [2023-11-29 04:55:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:31,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:31,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006465862] [2023-11-29 04:55:31,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006465862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:31,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:31,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:55:31,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554156583] [2023-11-29 04:55:31,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:31,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:31,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:31,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:31,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:55:31,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 118 transitions, 812 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:31,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:31,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:55:31,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:36,619 INFO L124 PetriNetUnfolderBase]: 21165/44490 cut-off events. [2023-11-29 04:55:36,619 INFO L125 PetriNetUnfolderBase]: For 169734/173780 co-relation queries the response was YES. [2023-11-29 04:55:36,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142235 conditions, 44490 events. 21165/44490 cut-off events. For 169734/173780 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 456808 event pairs, 8313 based on Foata normal form. 3754/47876 useless extension candidates. Maximal degree in co-relation 139080. Up to 17499 conditions per place. [2023-11-29 04:55:36,969 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 151 selfloop transitions, 13 changer transitions 0/198 dead transitions. [2023-11-29 04:55:36,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 198 transitions, 1792 flow [2023-11-29 04:55:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2023-11-29 04:55:36,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7525773195876289 [2023-11-29 04:55:36,971 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2023-11-29 04:55:36,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2023-11-29 04:55:36,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:36,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2023-11-29 04:55:36,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:36,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:36,972 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:36,972 INFO L175 Difference]: Start difference. First operand has 131 places, 118 transitions, 812 flow. Second operand 4 states and 292 transitions. [2023-11-29 04:55:36,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 198 transitions, 1792 flow [2023-11-29 04:55:38,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 198 transitions, 1779 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:55:38,164 INFO L231 Difference]: Finished difference. Result has 132 places, 117 transitions, 815 flow [2023-11-29 04:55:38,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=815, PETRI_PLACES=132, PETRI_TRANSITIONS=117} [2023-11-29 04:55:38,164 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 42 predicate places. [2023-11-29 04:55:38,164 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 117 transitions, 815 flow [2023-11-29 04:55:38,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:38,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:38,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:38,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 04:55:38,165 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:38,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1718486361, now seen corresponding path program 1 times [2023-11-29 04:55:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:38,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408349827] [2023-11-29 04:55:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:38,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:38,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408349827] [2023-11-29 04:55:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408349827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:38,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:38,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:55:38,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034933670] [2023-11-29 04:55:38,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:38,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:55:38,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:38,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:55:38,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:55:38,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 97 [2023-11-29 04:55:38,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 117 transitions, 815 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:38,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:38,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 97 [2023-11-29 04:55:38,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:44,175 INFO L124 PetriNetUnfolderBase]: 24909/47009 cut-off events. [2023-11-29 04:55:44,175 INFO L125 PetriNetUnfolderBase]: For 195373/199762 co-relation queries the response was YES. [2023-11-29 04:55:44,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159712 conditions, 47009 events. 24909/47009 cut-off events. For 195373/199762 co-relation queries the response was YES. Maximal size of possible extension queue 1256. Compared 445121 event pairs, 9501 based on Foata normal form. 4744/51399 useless extension candidates. Maximal degree in co-relation 156474. Up to 20243 conditions per place. [2023-11-29 04:55:44,573 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 227 selfloop transitions, 15 changer transitions 0/274 dead transitions. [2023-11-29 04:55:44,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 274 transitions, 2675 flow [2023-11-29 04:55:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:55:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:55:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 425 transitions. [2023-11-29 04:55:44,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7302405498281787 [2023-11-29 04:55:44,574 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 425 transitions. [2023-11-29 04:55:44,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 425 transitions. [2023-11-29 04:55:44,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:44,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 425 transitions. [2023-11-29 04:55:44,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:44,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:44,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:44,576 INFO L175 Difference]: Start difference. First operand has 132 places, 117 transitions, 815 flow. Second operand 6 states and 425 transitions. [2023-11-29 04:55:44,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 274 transitions, 2675 flow [2023-11-29 04:55:45,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 274 transitions, 2580 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 04:55:45,785 INFO L231 Difference]: Finished difference. Result has 135 places, 118 transitions, 832 flow [2023-11-29 04:55:45,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=832, PETRI_PLACES=135, PETRI_TRANSITIONS=118} [2023-11-29 04:55:45,786 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 45 predicate places. [2023-11-29 04:55:45,786 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 118 transitions, 832 flow [2023-11-29 04:55:45,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:45,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:45,786 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] [2023-11-29 04:55:45,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 04:55:45,786 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:45,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash 31377682, now seen corresponding path program 1 times [2023-11-29 04:55:45,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:45,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895751173] [2023-11-29 04:55:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:45,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:45,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:45,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895751173] [2023-11-29 04:55:45,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895751173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:45,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:55:45,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:55:45,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897972279] [2023-11-29 04:55:45,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:45,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:55:45,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:55:45,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:55:45,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 97 [2023-11-29 04:55:45,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 118 transitions, 832 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:45,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:45,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 97 [2023-11-29 04:55:45,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:51,327 INFO L124 PetriNetUnfolderBase]: 24441/47238 cut-off events. [2023-11-29 04:55:51,327 INFO L125 PetriNetUnfolderBase]: For 238164/242844 co-relation queries the response was YES. [2023-11-29 04:55:51,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163867 conditions, 47238 events. 24441/47238 cut-off events. For 238164/242844 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 458107 event pairs, 9105 based on Foata normal form. 4444/51178 useless extension candidates. Maximal degree in co-relation 160452. Up to 19507 conditions per place. [2023-11-29 04:55:51,726 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 159 selfloop transitions, 10 changer transitions 0/203 dead transitions. [2023-11-29 04:55:51,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 203 transitions, 1934 flow [2023-11-29 04:55:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:55:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:55:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2023-11-29 04:55:51,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7474226804123711 [2023-11-29 04:55:51,727 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2023-11-29 04:55:51,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2023-11-29 04:55:51,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:51,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2023-11-29 04:55:51,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:51,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:51,729 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:51,729 INFO L175 Difference]: Start difference. First operand has 135 places, 118 transitions, 832 flow. Second operand 4 states and 290 transitions. [2023-11-29 04:55:51,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 203 transitions, 1934 flow [2023-11-29 04:55:53,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 203 transitions, 1812 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-29 04:55:53,361 INFO L231 Difference]: Finished difference. Result has 133 places, 121 transitions, 865 flow [2023-11-29 04:55:53,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=865, PETRI_PLACES=133, PETRI_TRANSITIONS=121} [2023-11-29 04:55:53,361 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2023-11-29 04:55:53,361 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 121 transitions, 865 flow [2023-11-29 04:55:53,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:53,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:55:53,362 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:55:53,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 04:55:53,362 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:55:53,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:55:53,362 INFO L85 PathProgramCache]: Analyzing trace with hash 899846386, now seen corresponding path program 1 times [2023-11-29 04:55:53,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:55:53,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216012947] [2023-11-29 04:55:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:53,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:55:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:55:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216012947] [2023-11-29 04:55:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216012947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:55:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69072281] [2023-11-29 04:55:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:55:53,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:55:53,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:55:53,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:55:53,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:55:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:53,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:55:53,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:55:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:55:53,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:55:53,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69072281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:55:53,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:55:53,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:55:53,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454129648] [2023-11-29 04:55:53,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:55:53,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:55:53,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:55:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:55:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:55:53,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2023-11-29 04:55:53,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 121 transitions, 865 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:53,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:55:53,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2023-11-29 04:55:53,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:55:58,419 INFO L124 PetriNetUnfolderBase]: 19071/41116 cut-off events. [2023-11-29 04:55:58,419 INFO L125 PetriNetUnfolderBase]: For 180466/183778 co-relation queries the response was YES. [2023-11-29 04:55:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140337 conditions, 41116 events. 19071/41116 cut-off events. For 180466/183778 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 423314 event pairs, 4183 based on Foata normal form. 3252/43863 useless extension candidates. Maximal degree in co-relation 138782. Up to 12454 conditions per place. [2023-11-29 04:55:58,743 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 258 selfloop transitions, 19 changer transitions 0/311 dead transitions. [2023-11-29 04:55:58,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 311 transitions, 3164 flow [2023-11-29 04:55:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:55:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:55:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-11-29 04:55:58,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8006872852233677 [2023-11-29 04:55:58,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-11-29 04:55:58,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-11-29 04:55:58,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:55:58,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-11-29 04:55:58,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:58,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:58,746 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:58,746 INFO L175 Difference]: Start difference. First operand has 133 places, 121 transitions, 865 flow. Second operand 6 states and 466 transitions. [2023-11-29 04:55:58,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 311 transitions, 3164 flow [2023-11-29 04:56:00,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 311 transitions, 3119 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:56:00,044 INFO L231 Difference]: Finished difference. Result has 136 places, 120 transitions, 890 flow [2023-11-29 04:56:00,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=136, PETRI_TRANSITIONS=120} [2023-11-29 04:56:00,045 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 46 predicate places. [2023-11-29 04:56:00,045 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 120 transitions, 890 flow [2023-11-29 04:56:00,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:00,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:56:00,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 04:56:00,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:56:00,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 04:56:00,246 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:56:00,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:00,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2125435005, now seen corresponding path program 1 times [2023-11-29 04:56:00,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:56:00,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749614555] [2023-11-29 04:56:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:00,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:56:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:00,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:56:00,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749614555] [2023-11-29 04:56:00,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749614555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:00,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095694510] [2023-11-29 04:56:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:00,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:56:00,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:56:00,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:56:00,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:56:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:00,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:56:00,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:00,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:00,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095694510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:56:00,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:56:00,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 04:56:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333248745] [2023-11-29 04:56:00,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:00,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:56:00,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:56:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:56:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:56:00,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2023-11-29 04:56:00,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 120 transitions, 890 flow. Second operand has 12 states, 12 states have (on average 61.75) internal successors, (741), 12 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:00,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:56:00,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2023-11-29 04:56:00,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:56:13,589 INFO L124 PetriNetUnfolderBase]: 46521/99022 cut-off events. [2023-11-29 04:56:13,589 INFO L125 PetriNetUnfolderBase]: For 447284/455552 co-relation queries the response was YES. [2023-11-29 04:56:14,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341417 conditions, 99022 events. 46521/99022 cut-off events. For 447284/455552 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 1049837 event pairs, 10855 based on Foata normal form. 8142/106813 useless extension candidates. Maximal degree in co-relation 334124. Up to 15601 conditions per place. [2023-11-29 04:56:14,621 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 496 selfloop transitions, 37 changer transitions 0/567 dead transitions. [2023-11-29 04:56:14,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 567 transitions, 5944 flow [2023-11-29 04:56:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:56:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:56:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 807 transitions. [2023-11-29 04:56:14,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.831958762886598 [2023-11-29 04:56:14,623 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 807 transitions. [2023-11-29 04:56:14,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 807 transitions. [2023-11-29 04:56:14,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:56:14,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 807 transitions. [2023-11-29 04:56:14,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:14,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:14,627 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:14,627 INFO L175 Difference]: Start difference. First operand has 136 places, 120 transitions, 890 flow. Second operand 10 states and 807 transitions. [2023-11-29 04:56:14,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 567 transitions, 5944 flow [2023-11-29 04:56:19,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 567 transitions, 5848 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-11-29 04:56:19,655 INFO L231 Difference]: Finished difference. Result has 144 places, 147 transitions, 1228 flow [2023-11-29 04:56:19,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1228, PETRI_PLACES=144, PETRI_TRANSITIONS=147} [2023-11-29 04:56:19,656 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 54 predicate places. [2023-11-29 04:56:19,656 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 147 transitions, 1228 flow [2023-11-29 04:56:19,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 61.75) internal successors, (741), 12 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:19,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:56:19,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:19,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:56:19,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 04:56:19,857 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:56:19,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash -931794492, now seen corresponding path program 1 times [2023-11-29 04:56:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:56:19,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792250650] [2023-11-29 04:56:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:56:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:56:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792250650] [2023-11-29 04:56:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792250650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979462732] [2023-11-29 04:56:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:19,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:56:19,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:56:19,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:56:19,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:56:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:20,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:56:20,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:20,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:56:20,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979462732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:56:20,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:56:20,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:56:20,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451348761] [2023-11-29 04:56:20,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:56:20,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:56:20,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:56:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:56:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:56:20,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2023-11-29 04:56:20,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 147 transitions, 1228 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:20,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:56:20,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2023-11-29 04:56:20,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:56:33,428 INFO L124 PetriNetUnfolderBase]: 46851/103142 cut-off events. [2023-11-29 04:56:33,428 INFO L125 PetriNetUnfolderBase]: For 479919/488318 co-relation queries the response was YES. [2023-11-29 04:56:34,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342823 conditions, 103142 events. 46851/103142 cut-off events. For 479919/488318 co-relation queries the response was YES. Maximal size of possible extension queue 1353. Compared 1136405 event pairs, 969 based on Foata normal form. 8586/111287 useless extension candidates. Maximal degree in co-relation 266023. Up to 30092 conditions per place. [2023-11-29 04:56:34,453 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 379 selfloop transitions, 23 changer transitions 0/435 dead transitions. [2023-11-29 04:56:34,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 435 transitions, 4913 flow [2023-11-29 04:56:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:56:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:56:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-11-29 04:56:34,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8006872852233677 [2023-11-29 04:56:34,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-11-29 04:56:34,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-11-29 04:56:34,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:56:34,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-11-29 04:56:34,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:34,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:34,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:34,457 INFO L175 Difference]: Start difference. First operand has 144 places, 147 transitions, 1228 flow. Second operand 6 states and 466 transitions. [2023-11-29 04:56:34,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 435 transitions, 4913 flow [2023-11-29 04:56:43,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 435 transitions, 4798 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-29 04:56:43,319 INFO L231 Difference]: Finished difference. Result has 146 places, 146 transitions, 1247 flow [2023-11-29 04:56:43,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1247, PETRI_PLACES=146, PETRI_TRANSITIONS=146} [2023-11-29 04:56:43,370 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 56 predicate places. [2023-11-29 04:56:43,370 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 146 transitions, 1247 flow [2023-11-29 04:56:43,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:43,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:56:43,370 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:43,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:56:43,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 04:56:43,571 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:56:43,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1179142678, now seen corresponding path program 1 times [2023-11-29 04:56:43,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:56:43,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364075789] [2023-11-29 04:56:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:43,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:56:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:43,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:56:43,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364075789] [2023-11-29 04:56:43,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364075789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:43,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433902404] [2023-11-29 04:56:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:43,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:56:43,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:56:43,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:56:43,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:56:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:43,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:56:43,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:43,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:43,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433902404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:56:43,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:56:43,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 04:56:43,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262925354] [2023-11-29 04:56:43,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:43,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:56:43,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:56:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:56:43,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:56:43,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2023-11-29 04:56:43,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 146 transitions, 1247 flow. Second operand has 12 states, 12 states have (on average 61.916666666666664) internal successors, (743), 12 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:43,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:56:43,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2023-11-29 04:56:43,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:57:21,871 INFO L124 PetriNetUnfolderBase]: 114405/252110 cut-off events. [2023-11-29 04:57:21,871 INFO L125 PetriNetUnfolderBase]: For 1237336/1258099 co-relation queries the response was YES. [2023-11-29 04:57:23,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848154 conditions, 252110 events. 114405/252110 cut-off events. For 1237336/1258099 co-relation queries the response was YES. Maximal size of possible extension queue 3035. Compared 3013812 event pairs, 17979 based on Foata normal form. 21398/273353 useless extension candidates. Maximal degree in co-relation 668509. Up to 38025 conditions per place. [2023-11-29 04:57:24,545 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 713 selfloop transitions, 45 changer transitions 0/791 dead transitions. [2023-11-29 04:57:24,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 791 transitions, 9024 flow [2023-11-29 04:57:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:57:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:57:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 807 transitions. [2023-11-29 04:57:24,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.831958762886598 [2023-11-29 04:57:24,547 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 807 transitions. [2023-11-29 04:57:24,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 807 transitions. [2023-11-29 04:57:24,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:57:24,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 807 transitions. [2023-11-29 04:57:24,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:24,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:24,550 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:24,550 INFO L175 Difference]: Start difference. First operand has 146 places, 146 transitions, 1247 flow. Second operand 10 states and 807 transitions. [2023-11-29 04:57:24,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 791 transitions, 9024 flow [2023-11-29 04:57:34,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 791 transitions, 8906 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-11-29 04:57:34,993 INFO L231 Difference]: Finished difference. Result has 154 places, 179 transitions, 1718 flow [2023-11-29 04:57:34,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1718, PETRI_PLACES=154, PETRI_TRANSITIONS=179} [2023-11-29 04:57:34,994 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 64 predicate places. [2023-11-29 04:57:34,994 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 179 transitions, 1718 flow [2023-11-29 04:57:34,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 61.916666666666664) internal successors, (743), 12 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:34,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:57:34,995 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-11-29 04:57:34,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:57:35,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 04:57:35,195 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:57:35,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:35,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1726509793, now seen corresponding path program 2 times [2023-11-29 04:57:35,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:57:35,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191288680] [2023-11-29 04:57:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:35,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:57:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:35,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:57:35,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191288680] [2023-11-29 04:57:35,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191288680] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:57:35,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014194559] [2023-11-29 04:57:35,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:57:35,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:57:35,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:57:35,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:57:35,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:57:35,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:57:35,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:57:35,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:57:35,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 04:57:35,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:57:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 04:57:35,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014194559] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:57:35,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:57:35,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2023-11-29 04:57:35,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462521439] [2023-11-29 04:57:35,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:57:35,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:57:35,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:57:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:57:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:57:35,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2023-11-29 04:57:35,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 179 transitions, 1718 flow. Second operand has 15 states, 15 states have (on average 62.13333333333333) internal successors, (932), 15 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:35,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:57:35,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2023-11-29 04:57:35,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:58:22,721 INFO L124 PetriNetUnfolderBase]: 137287/287882 cut-off events. [2023-11-29 04:58:22,721 INFO L125 PetriNetUnfolderBase]: For 1537394/1560719 co-relation queries the response was YES. [2023-11-29 04:58:24,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013784 conditions, 287882 events. 137287/287882 cut-off events. For 1537394/1560719 co-relation queries the response was YES. Maximal size of possible extension queue 2945. Compared 3313722 event pairs, 1545 based on Foata normal form. 23637/311374 useless extension candidates. Maximal degree in co-relation 996278. Up to 33540 conditions per place. [2023-11-29 04:58:26,125 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 1041 selfloop transitions, 57 changer transitions 65/1196 dead transitions. [2023-11-29 04:58:26,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1196 transitions, 15674 flow [2023-11-29 04:58:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:58:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:58:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1178 transitions. [2023-11-29 04:58:26,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8096219931271478 [2023-11-29 04:58:26,127 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1178 transitions. [2023-11-29 04:58:26,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1178 transitions. [2023-11-29 04:58:26,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:58:26,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1178 transitions. [2023-11-29 04:58:26,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 78.53333333333333) internal successors, (1178), 15 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:26,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:26,131 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:26,131 INFO L175 Difference]: Start difference. First operand has 154 places, 179 transitions, 1718 flow. Second operand 15 states and 1178 transitions. [2023-11-29 04:58:26,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 1196 transitions, 15674 flow [2023-11-29 04:59:33,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 1196 transitions, 15287 flow, removed 41 selfloop flow, removed 6 redundant places. [2023-11-29 04:59:33,172 INFO L231 Difference]: Finished difference. Result has 162 places, 184 transitions, 1868 flow [2023-11-29 04:59:33,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1868, PETRI_PLACES=162, PETRI_TRANSITIONS=184} [2023-11-29 04:59:33,172 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 72 predicate places. [2023-11-29 04:59:33,172 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 184 transitions, 1868 flow [2023-11-29 04:59:33,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 62.13333333333333) internal successors, (932), 15 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:59:33,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:59:33,173 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:33,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:59:33,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 04:59:33,373 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-29 04:59:33,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1129599505, now seen corresponding path program 2 times [2023-11-29 04:59:33,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:33,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466075464] [2023-11-29 04:59:33,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:33,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:59:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466075464] [2023-11-29 04:59:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466075464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789245905] [2023-11-29 04:59:33,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:59:33,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:33,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:33,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:33,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:59:33,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:59:33,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:59:33,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:59:33,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 04:59:33,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:59:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 04:59:33,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789245905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:59:33,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:59:33,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2023-11-29 04:59:33,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244325866] [2023-11-29 04:59:33,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:59:33,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:59:33,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:33,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:59:33,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:59:33,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2023-11-29 04:59:33,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 184 transitions, 1868 flow. Second operand has 15 states, 15 states have (on average 62.4) internal successors, (936), 15 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:59:33,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:59:33,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2023-11-29 04:59:33,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:33,893 INFO L124 PetriNetUnfolderBase]: 162485/359920 cut-off events. [2023-11-29 05:00:33,893 INFO L125 PetriNetUnfolderBase]: For 1897088/1926440 co-relation queries the response was YES. [2023-11-29 05:00:36,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231291 conditions, 359920 events. 162485/359920 cut-off events. For 1897088/1926440 co-relation queries the response was YES. Maximal size of possible extension queue 3681. Compared 4425290 event pairs, 1167 based on Foata normal form. 30136/389918 useless extension candidates. Maximal degree in co-relation 806402. Up to 40170 conditions per place. [2023-11-29 05:00:36,579 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 0 selfloop transitions, 0 changer transitions 1227/1227 dead transitions. [2023-11-29 05:00:36,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1227 transitions, 15508 flow [2023-11-29 05:00:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:00:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 05:00:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1171 transitions. [2023-11-29 05:00:36,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8048109965635739 [2023-11-29 05:00:36,582 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1171 transitions. [2023-11-29 05:00:36,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1171 transitions. [2023-11-29 05:00:36,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:36,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1171 transitions. [2023-11-29 05:00:36,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 78.06666666666666) internal successors, (1171), 15 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:36,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:36,586 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:36,586 INFO L175 Difference]: Start difference. First operand has 162 places, 184 transitions, 1868 flow. Second operand 15 states and 1171 transitions. [2023-11-29 05:00:36,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1227 transitions, 15508 flow [2023-11-29 05:01:20,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 1227 transitions, 13487 flow, removed 249 selfloop flow, removed 15 redundant places. [2023-11-29 05:01:20,007 INFO L231 Difference]: Finished difference. Result has 159 places, 0 transitions, 0 flow [2023-11-29 05:01:20,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=159, PETRI_TRANSITIONS=0} [2023-11-29 05:01:20,008 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 69 predicate places. [2023-11-29 05:01:20,008 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 0 transitions, 0 flow [2023-11-29 05:01:20,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 62.4) internal successors, (936), 15 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:20,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 58 remaining) [2023-11-29 05:01:20,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 58 remaining) [2023-11-29 05:01:20,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 58 remaining) [2023-11-29 05:01:20,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 58 remaining) [2023-11-29 05:01:20,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 58 remaining) [2023-11-29 05:01:20,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 58 remaining) [2023-11-29 05:01:20,011 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 58 remaining) [2023-11-29 05:01:20,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 58 remaining) [2023-11-29 05:01:20,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 58 remaining) [2023-11-29 05:01:20,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 58 remaining) [2023-11-29 05:01:20,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 58 remaining) [2023-11-29 05:01:20,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 58 remaining) [2023-11-29 05:01:20,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 58 remaining) [2023-11-29 05:01:20,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 58 remaining) [2023-11-29 05:01:20,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 58 remaining) [2023-11-29 05:01:20,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:01:20,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 05:01:20,218 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:20,222 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 05:01:20,223 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:01:20,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:01:20 BasicIcfg [2023-11-29 05:01:20,228 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:01:20,228 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:01:20,228 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:01:20,228 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:01:20,229 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:54:50" (3/4) ... [2023-11-29 05:01:20,230 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 05:01:20,232 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 05:01:20,232 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 05:01:20,236 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2023-11-29 05:01:20,236 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-29 05:01:20,236 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 05:01:20,236 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 05:01:20,314 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 05:01:20,314 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 05:01:20,314 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:01:20,315 INFO L158 Benchmark]: Toolchain (without parser) took 391062.07ms. Allocated memory was 184.5MB in the beginning and 14.8GB in the end (delta: 14.6GB). Free memory was 144.5MB in the beginning and 10.9GB in the end (delta: -10.7GB). Peak memory consumption was 3.9GB. Max. memory is 16.1GB. [2023-11-29 05:01:20,315 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:01:20,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.53ms. Allocated memory is still 184.5MB. Free memory was 144.5MB in the beginning and 133.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 05:01:20,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.58ms. Allocated memory is still 184.5MB. Free memory was 133.3MB in the beginning and 130.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:01:20,316 INFO L158 Benchmark]: Boogie Preprocessor took 52.06ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 128.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:01:20,316 INFO L158 Benchmark]: RCFGBuilder took 824.52ms. Allocated memory is still 184.5MB. Free memory was 127.7MB in the beginning and 140.6MB in the end (delta: -12.9MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2023-11-29 05:01:20,316 INFO L158 Benchmark]: TraceAbstraction took 389790.24ms. Allocated memory was 184.5MB in the beginning and 14.8GB in the end (delta: 14.6GB). Free memory was 139.6MB in the beginning and 10.9GB in the end (delta: -10.7GB). Peak memory consumption was 7.8GB. Max. memory is 16.1GB. [2023-11-29 05:01:20,317 INFO L158 Benchmark]: Witness Printer took 86.43ms. Allocated memory is still 14.8GB. Free memory was 10.9GB in the beginning and 10.9GB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 05:01:20,318 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.53ms. Allocated memory is still 184.5MB. Free memory was 144.5MB in the beginning and 133.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.58ms. Allocated memory is still 184.5MB. Free memory was 133.3MB in the beginning and 130.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.06ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 128.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 824.52ms. Allocated memory is still 184.5MB. Free memory was 127.7MB in the beginning and 140.6MB in the end (delta: -12.9MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. * TraceAbstraction took 389790.24ms. Allocated memory was 184.5MB in the beginning and 14.8GB in the end (delta: 14.6GB). Free memory was 139.6MB in the beginning and 10.9GB in the end (delta: -10.7GB). Peak memory consumption was 7.8GB. Max. memory is 16.1GB. * Witness Printer took 86.43ms. Allocated memory is still 14.8GB. Free memory was 10.9GB in the beginning and 10.9GB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 54]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 54]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 168 locations, 58 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 389.7s, OverallIterations: 40, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 383.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5195 SdHoareTripleChecker+Valid, 7.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4632 mSDsluCounter, 992 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 809 mSDsCounter, 226 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11422 IncrementalHoareTripleChecker+Invalid, 11648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 226 mSolverCounterUnsat, 183 mSDtfsCounter, 11422 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 754 GetRequests, 508 SyntacticMatches, 4 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1868occurred in iteration=39, InterpolantAutomatonStates: 232, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1046 NumberOfCodeBlocks, 926 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1222 ConstructedInterpolants, 0 QuantifiedInterpolants, 3710 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1006 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 50 InterpolantComputations, 36 PerfectInterpolantSequences, 404/1046 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 28 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 05:01:20,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675a9c8-4576-4200-885a-7568eb33a6f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE