./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3aaecf4b84c8f01be47d1e624871b73f33541df72e3693614a0a3bb5cc7a97b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:03:37,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:03:37,401 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:03:37,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:03:37,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:03:37,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:03:37,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:03:37,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:03:37,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:03:37,436 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:03:37,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:03:37,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:03:37,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:03:37,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:03:37,440 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:03:37,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:03:37,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:03:37,442 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:03:37,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:03:37,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:03:37,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:03:37,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:03:37,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:03:37,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:03:37,446 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:03:37,447 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:03:37,448 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:03:37,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:03:37,449 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:03:37,450 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:03:37,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:03:37,451 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:03:37,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:03:37,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:37,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:03:37,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:03:37,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:03:37,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:03:37,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:03:37,455 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:03:37,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:03:37,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:03:37,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:03:37,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:03:37,458 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_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aaecf4b84c8f01be47d1e624871b73f33541df72e3693614a0a3bb5cc7a97b5 [2023-11-26 12:03:37,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:03:37,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:03:37,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:03:37,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:03:37,823 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:03:37,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2023-11-26 12:03:41,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:03:41,530 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:03:41,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2023-11-26 12:03:41,549 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/data/67b2cb7ac/67f167fa56944e5094981e1139f60f73/FLAGd29f4f65c [2023-11-26 12:03:41,568 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/data/67b2cb7ac/67f167fa56944e5094981e1139f60f73 [2023-11-26 12:03:41,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:03:41,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:03:41,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:41,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:03:41,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:03:41,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:41" (1/1) ... [2023-11-26 12:03:41,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbd7aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:41, skipping insertion in model container [2023-11-26 12:03:41,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:41" (1/1) ... [2023-11-26 12:03:41,651 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:03:42,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:42,102 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:03:42,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:42,217 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:03:42,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42 WrapperNode [2023-11-26 12:03:42,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:42,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:42,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:03:42,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:03:42,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,284 INFO L138 Inliner]: procedures = 171, calls = 27, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 103 [2023-11-26 12:03:42,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:42,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:03:42,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:03:42,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:03:42,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,321 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 7, 1]. 70 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 1 writes are split as follows [0, 0, 1]. [2023-11-26 12:03:42,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:03:42,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:03:42,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:03:42,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:03:42,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (1/1) ... [2023-11-26 12:03:42,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:42,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:42,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:03:42,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd9ea80f-3d63-4d6d-bcde-f5aade857a9f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:03:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:03:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:03:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:03:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-26 12:03:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-26 12:03:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:03:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:03:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:03:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:03:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:03:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:03:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:03:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:03:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:03:42,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:03:42,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:03:42,467 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:03:42,601 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:03:42,604 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:03:42,846 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:03:43,078 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:03:43,078 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 12:03:43,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:43 BoogieIcfgContainer [2023-11-26 12:03:43,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:03:43,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:03:43,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:03:43,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:03:43,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:03:41" (1/3) ... [2023-11-26 12:03:43,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f42737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:43, skipping insertion in model container [2023-11-26 12:03:43,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:42" (2/3) ... [2023-11-26 12:03:43,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f42737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:43, skipping insertion in model container [2023-11-26 12:03:43,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:43" (3/3) ... [2023-11-26 12:03:43,089 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2023-11-26 12:03:43,098 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:03:43,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:03:43,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 12:03:43,109 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:03:43,151 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:03:43,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 29 transitions, 62 flow [2023-11-26 12:03:43,212 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2023-11-26 12:03:43,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:43,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 31 events. 4/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-26 12:03:43,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 29 transitions, 62 flow [2023-11-26 12:03:43,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 29 transitions, 62 flow [2023-11-26 12:03:43,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:43,236 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;@4a153cce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:43,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-26 12:03:43,243 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:03:43,243 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 12:03:43,243 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:43,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:43,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:03:43,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 12:03:43,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash 338713955, now seen corresponding path program 1 times [2023-11-26 12:03:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:43,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441842672] [2023-11-26 12:03:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:43,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441842672] [2023-11-26 12:03:43,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441842672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:43,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:43,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:43,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968823268] [2023-11-26 12:03:43,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:43,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:43,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:43,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2023-11-26 12:03:43,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:43,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:43,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2023-11-26 12:03:43,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:43,702 INFO L124 PetriNetUnfolderBase]: 26/86 cut-off events. [2023-11-26 12:03:43,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:03:43,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 86 events. 26/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 237 event pairs, 2 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 137. Up to 48 conditions per place. [2023-11-26 12:03:43,705 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 15 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-11-26 12:03:43,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 92 flow [2023-11-26 12:03:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2023-11-26 12:03:43,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2023-11-26 12:03:43,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 52 transitions. [2023-11-26 12:03:43,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 52 transitions. [2023-11-26 12:03:43,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:43,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 52 transitions. [2023-11-26 12:03:43,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:43,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:43,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:43,730 INFO L175 Difference]: Start difference. First operand has 28 places, 29 transitions, 62 flow. Second operand 3 states and 52 transitions. [2023-11-26 12:03:43,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 92 flow [2023-11-26 12:03:43,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 92 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:43,735 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 58 flow [2023-11-26 12:03:43,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-11-26 12:03:43,741 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-11-26 12:03:43,741 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 58 flow [2023-11-26 12:03:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:43,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:43,742 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 12:03:43,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:03:43,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 12:03:43,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1910174121, now seen corresponding path program 1 times [2023-11-26 12:03:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:43,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726415055] [2023-11-26 12:03:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:43,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:43,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:03:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:43,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:03:43,823 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:03:43,825 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-26 12:03:43,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-26 12:03:43,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-26 12:03:43,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-26 12:03:43,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-26 12:03:43,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-26 12:03:43,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-26 12:03:43,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-26 12:03:43,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-26 12:03:43,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:03:43,830 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 12:03:43,838 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:03:43,838 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 12:03:43,907 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:03:43,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 53 transitions, 116 flow [2023-11-26 12:03:43,943 INFO L124 PetriNetUnfolderBase]: 8/58 cut-off events. [2023-11-26 12:03:43,943 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 12:03:43,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 58 events. 8/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 49. Up to 3 conditions per place. [2023-11-26 12:03:43,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 53 transitions, 116 flow [2023-11-26 12:03:43,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 53 transitions, 116 flow [2023-11-26 12:03:43,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:43,950 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;@4a153cce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:43,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 12:03:43,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:03:43,956 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 12:03:43,956 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:03:43,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:43,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:03:43,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:03:43,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 389314959, now seen corresponding path program 1 times [2023-11-26 12:03:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168708146] [2023-11-26 12:03:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:44,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:44,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168708146] [2023-11-26 12:03:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168708146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:44,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:44,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:44,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806048164] [2023-11-26 12:03:44,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:44,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:44,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:44,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2023-11-26 12:03:44,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:44,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:44,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2023-11-26 12:03:44,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:44,562 INFO L124 PetriNetUnfolderBase]: 623/1314 cut-off events. [2023-11-26 12:03:44,562 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-26 12:03:44,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 1314 events. 623/1314 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7873 event pairs, 68 based on Foata normal form. 132/1353 useless extension candidates. Maximal degree in co-relation 1963. Up to 807 conditions per place. [2023-11-26 12:03:44,583 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 37 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-26 12:03:44,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 213 flow [2023-11-26 12:03:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2023-11-26 12:03:44,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2023-11-26 12:03:44,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2023-11-26 12:03:44,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2023-11-26 12:03:44,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:44,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2023-11-26 12:03:44,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:44,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:44,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:44,597 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 116 flow. Second operand 3 states and 111 transitions. [2023-11-26 12:03:44,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 213 flow [2023-11-26 12:03:44,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 213 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:44,603 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 108 flow [2023-11-26 12:03:44,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2023-11-26 12:03:44,605 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-11-26 12:03:44,605 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 108 flow [2023-11-26 12:03:44,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:44,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:44,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:03:44,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:03:44,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:03:44,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -816137720, now seen corresponding path program 1 times [2023-11-26 12:03:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147873811] [2023-11-26 12:03:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:44,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147873811] [2023-11-26 12:03:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147873811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:44,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:44,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:44,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042835286] [2023-11-26 12:03:44,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:44,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:44,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:44,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2023-11-26 12:03:44,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:44,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:44,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2023-11-26 12:03:44,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:45,035 INFO L124 PetriNetUnfolderBase]: 570/1228 cut-off events. [2023-11-26 12:03:45,035 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-26 12:03:45,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 1228 events. 570/1228 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7317 event pairs, 68 based on Foata normal form. 33/1171 useless extension candidates. Maximal degree in co-relation 1863. Up to 721 conditions per place. [2023-11-26 12:03:45,047 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 36 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-26 12:03:45,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 213 flow [2023-11-26 12:03:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-26 12:03:45,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2023-11-26 12:03:45,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-26 12:03:45,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-26 12:03:45,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:45,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-26 12:03:45,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,058 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 108 flow. Second operand 3 states and 102 transitions. [2023-11-26 12:03:45,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 213 flow [2023-11-26 12:03:45,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:45,062 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 106 flow [2023-11-26 12:03:45,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-26 12:03:45,065 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-11-26 12:03:45,065 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 106 flow [2023-11-26 12:03:45,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:45,066 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:45,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:03:45,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:03:45,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1625445101, now seen corresponding path program 1 times [2023-11-26 12:03:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769227227] [2023-11-26 12:03:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:45,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:03:45,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:45,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769227227] [2023-11-26 12:03:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769227227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:45,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:45,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073407001] [2023-11-26 12:03:45,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:45,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:45,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:45,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:45,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:45,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2023-11-26 12:03:45,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:45,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2023-11-26 12:03:45,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:45,429 INFO L124 PetriNetUnfolderBase]: 614/1274 cut-off events. [2023-11-26 12:03:45,430 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-26 12:03:45,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1274 events. 614/1274 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7464 event pairs, 92 based on Foata normal form. 30/1220 useless extension candidates. Maximal degree in co-relation 1722. Up to 750 conditions per place. [2023-11-26 12:03:45,447 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 36 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-26 12:03:45,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 208 flow [2023-11-26 12:03:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-26 12:03:45,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2023-11-26 12:03:45,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-26 12:03:45,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-26 12:03:45,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:45,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-26 12:03:45,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,458 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 106 flow. Second operand 3 states and 102 transitions. [2023-11-26 12:03:45,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 208 flow [2023-11-26 12:03:45,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:45,464 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 104 flow [2023-11-26 12:03:45,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-26 12:03:45,466 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-11-26 12:03:45,467 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 104 flow [2023-11-26 12:03:45,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:45,468 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-26 12:03:45,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:03:45,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 12:03:45,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:45,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1150833237, now seen corresponding path program 1 times [2023-11-26 12:03:45,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:45,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520083005] [2023-11-26 12:03:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:45,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:45,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:03:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:45,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:03:45,512 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:03:45,512 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-26 12:03:45,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-26 12:03:45,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-26 12:03:45,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-26 12:03:45,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-26 12:03:45,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-26 12:03:45,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-26 12:03:45,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-26 12:03:45,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-26 12:03:45,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-26 12:03:45,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-26 12:03:45,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-26 12:03:45,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-26 12:03:45,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:03:45,516 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 12:03:45,517 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:03:45,517 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 12:03:45,562 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:03:45,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 77 transitions, 172 flow [2023-11-26 12:03:45,576 INFO L124 PetriNetUnfolderBase]: 12/85 cut-off events. [2023-11-26 12:03:45,576 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 12:03:45,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 12/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 287 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2023-11-26 12:03:45,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 77 transitions, 172 flow [2023-11-26 12:03:45,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 77 transitions, 172 flow [2023-11-26 12:03:45,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:45,583 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;@4a153cce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:45,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 12:03:45,586 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:03:45,586 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 12:03:45,586 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:03:45,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:45,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:03:45,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 12:03:45,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:45,587 INFO L85 PathProgramCache]: Analyzing trace with hash 462818547, now seen corresponding path program 1 times [2023-11-26 12:03:45,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:45,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915097459] [2023-11-26 12:03:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:45,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:45,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915097459] [2023-11-26 12:03:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915097459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:45,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:45,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:45,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757909048] [2023-11-26 12:03:45,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:45,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:45,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2023-11-26 12:03:45,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:45,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:45,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2023-11-26 12:03:45,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:47,932 INFO L124 PetriNetUnfolderBase]: 9857/16740 cut-off events. [2023-11-26 12:03:47,933 INFO L125 PetriNetUnfolderBase]: For 709/709 co-relation queries the response was YES. [2023-11-26 12:03:47,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30379 conditions, 16740 events. 9857/16740 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 132024 event pairs, 1268 based on Foata normal form. 2554/18310 useless extension candidates. Maximal degree in co-relation 14685. Up to 11097 conditions per place. [2023-11-26 12:03:48,164 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 59 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-11-26 12:03:48,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 338 flow [2023-11-26 12:03:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-11-26 12:03:48,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7359307359307359 [2023-11-26 12:03:48,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-11-26 12:03:48,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-11-26 12:03:48,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:48,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-11-26 12:03:48,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:48,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:48,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:48,170 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 172 flow. Second operand 3 states and 170 transitions. [2023-11-26 12:03:48,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 338 flow [2023-11-26 12:03:48,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 334 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:48,176 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 158 flow [2023-11-26 12:03:48,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2023-11-26 12:03:48,179 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-26 12:03:48,179 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 158 flow [2023-11-26 12:03:48,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:48,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:48,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:03:48,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:03:48,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 12:03:48,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1462473585, now seen corresponding path program 1 times [2023-11-26 12:03:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:48,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337805251] [2023-11-26 12:03:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:48,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337805251] [2023-11-26 12:03:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337805251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:48,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:48,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205545459] [2023-11-26 12:03:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:48,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:48,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:48,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2023-11-26 12:03:48,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:48,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:48,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2023-11-26 12:03:48,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:50,370 INFO L124 PetriNetUnfolderBase]: 8994/15544 cut-off events. [2023-11-26 12:03:50,370 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2023-11-26 12:03:50,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28511 conditions, 15544 events. 8994/15544 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 123348 event pairs, 1268 based on Foata normal form. 333/14908 useless extension candidates. Maximal degree in co-relation 26268. Up to 9901 conditions per place. [2023-11-26 12:03:50,509 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 58 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-11-26 12:03:50,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 334 flow [2023-11-26 12:03:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-11-26 12:03:50,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6796536796536796 [2023-11-26 12:03:50,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-11-26 12:03:50,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-11-26 12:03:50,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:50,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-11-26 12:03:50,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:50,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:50,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:50,514 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 158 flow. Second operand 3 states and 157 transitions. [2023-11-26 12:03:50,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 334 flow [2023-11-26 12:03:50,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:50,522 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 156 flow [2023-11-26 12:03:50,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2023-11-26 12:03:50,524 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-26 12:03:50,525 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 156 flow [2023-11-26 12:03:50,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:50,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:50,525 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:50,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:03:50,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 12:03:50,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash 937614285, now seen corresponding path program 1 times [2023-11-26 12:03:50,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:50,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459097073] [2023-11-26 12:03:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:50,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:03:50,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:50,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459097073] [2023-11-26 12:03:50,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459097073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:50,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:50,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:50,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130577245] [2023-11-26 12:03:50,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:50,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:50,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:50,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:50,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:50,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2023-11-26 12:03:50,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:50,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:50,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2023-11-26 12:03:50,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:52,622 INFO L124 PetriNetUnfolderBase]: 9858/16728 cut-off events. [2023-11-26 12:03:52,622 INFO L125 PetriNetUnfolderBase]: For 1072/1072 co-relation queries the response was YES. [2023-11-26 12:03:52,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30981 conditions, 16728 events. 9858/16728 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 131341 event pairs, 1292 based on Foata normal form. 330/16106 useless extension candidates. Maximal degree in co-relation 24229. Up to 11040 conditions per place. [2023-11-26 12:03:52,778 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 58 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-26 12:03:52,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 329 flow [2023-11-26 12:03:52,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-11-26 12:03:52,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6796536796536796 [2023-11-26 12:03:52,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-11-26 12:03:52,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-11-26 12:03:52,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:52,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-11-26 12:03:52,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,784 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 156 flow. Second operand 3 states and 157 transitions. [2023-11-26 12:03:52,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 329 flow [2023-11-26 12:03:52,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:52,794 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 154 flow [2023-11-26 12:03:52,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2023-11-26 12:03:52,796 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-11-26 12:03:52,796 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 154 flow [2023-11-26 12:03:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:52,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:52,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:03:52,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 12:03:52,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:52,798 INFO L85 PathProgramCache]: Analyzing trace with hash -998727698, now seen corresponding path program 1 times [2023-11-26 12:03:52,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:52,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892829779] [2023-11-26 12:03:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:03:52,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892829779] [2023-11-26 12:03:52,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892829779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:52,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:52,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:52,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159870736] [2023-11-26 12:03:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:52,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:52,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:52,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:52,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:52,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2023-11-26 12:03:52,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:52,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2023-11-26 12:03:52,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:54,368 INFO L124 PetriNetUnfolderBase]: 9000/15546 cut-off events. [2023-11-26 12:03:54,368 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2023-11-26 12:03:54,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28507 conditions, 15546 events. 9000/15546 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 122601 event pairs, 1292 based on Foata normal form. 330/14941 useless extension candidates. Maximal degree in co-relation 16272. Up to 9850 conditions per place. [2023-11-26 12:03:54,498 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 57 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-11-26 12:03:54,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 321 flow [2023-11-26 12:03:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-11-26 12:03:54,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2023-11-26 12:03:54,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-11-26 12:03:54,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-11-26 12:03:54,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:54,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-11-26 12:03:54,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:54,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:54,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:54,503 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 154 flow. Second operand 3 states and 156 transitions. [2023-11-26 12:03:54,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 321 flow [2023-11-26 12:03:54,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:54,510 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 152 flow [2023-11-26 12:03:54,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-11-26 12:03:54,512 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-26 12:03:54,512 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 152 flow [2023-11-26 12:03:54,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:54,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:54,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:54,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:03:54,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 12:03:54,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:54,514 INFO L85 PathProgramCache]: Analyzing trace with hash 402835578, now seen corresponding path program 1 times [2023-11-26 12:03:54,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:54,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460208610] [2023-11-26 12:03:54,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:54,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:54,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:54,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460208610] [2023-11-26 12:03:54,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460208610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:54,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:54,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:54,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931886965] [2023-11-26 12:03:54,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:54,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:54,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:54,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:54,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:54,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2023-11-26 12:03:54,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:54,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:54,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2023-11-26 12:03:54,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:56,237 INFO L124 PetriNetUnfolderBase]: 9857/16062 cut-off events. [2023-11-26 12:03:56,237 INFO L125 PetriNetUnfolderBase]: For 1069/1069 co-relation queries the response was YES. [2023-11-26 12:03:56,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30318 conditions, 16062 events. 9857/16062 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 119684 event pairs, 1268 based on Foata normal form. 333/15438 useless extension candidates. Maximal degree in co-relation 28012. Up to 8705 conditions per place. [2023-11-26 12:03:56,365 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 81 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2023-11-26 12:03:56,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 113 transitions, 444 flow [2023-11-26 12:03:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:03:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:03:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2023-11-26 12:03:56,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6948051948051948 [2023-11-26 12:03:56,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 214 transitions. [2023-11-26 12:03:56,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 214 transitions. [2023-11-26 12:03:56,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:56,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 214 transitions. [2023-11-26 12:03:56,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:56,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:56,371 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:56,371 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 152 flow. Second operand 4 states and 214 transitions. [2023-11-26 12:03:56,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 113 transitions, 444 flow [2023-11-26 12:03:56,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 113 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:03:56,378 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 154 flow [2023-11-26 12:03:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2023-11-26 12:03:56,380 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-26 12:03:56,380 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 154 flow [2023-11-26 12:03:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:56,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:56,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:03:56,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 12:03:56,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash -396998439, now seen corresponding path program 1 times [2023-11-26 12:03:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234849367] [2023-11-26 12:03:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:56,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:56,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234849367] [2023-11-26 12:03:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234849367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:56,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:56,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:56,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079203325] [2023-11-26 12:03:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:56,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:56,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:56,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:56,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2023-11-26 12:03:56,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:56,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:56,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2023-11-26 12:03:56,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:59,011 INFO L124 PetriNetUnfolderBase]: 16938/27460 cut-off events. [2023-11-26 12:03:59,011 INFO L125 PetriNetUnfolderBase]: For 2609/2609 co-relation queries the response was YES. [2023-11-26 12:03:59,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53486 conditions, 27460 events. 16938/27460 cut-off events. For 2609/2609 co-relation queries the response was YES. Maximal size of possible extension queue 1126. Compared 214850 event pairs, 9884 based on Foata normal form. 333/25796 useless extension candidates. Maximal degree in co-relation 51234. Up to 13493 conditions per place. [2023-11-26 12:03:59,233 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 90 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2023-11-26 12:03:59,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 122 transitions, 482 flow [2023-11-26 12:03:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:03:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:03:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2023-11-26 12:03:59,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724025974025974 [2023-11-26 12:03:59,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 223 transitions. [2023-11-26 12:03:59,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 223 transitions. [2023-11-26 12:03:59,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:59,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 223 transitions. [2023-11-26 12:03:59,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-26 12:03:59,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:59,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:59,240 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 154 flow. Second operand 4 states and 223 transitions. [2023-11-26 12:03:59,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 122 transitions, 482 flow [2023-11-26 12:03:59,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 122 transitions, 468 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:03:59,257 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 173 flow [2023-11-26 12:03:59,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2023-11-26 12:03:59,260 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-26 12:03:59,260 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 173 flow [2023-11-26 12:03:59,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:59,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:59,261 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:59,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:03:59,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 12:03:59,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:59,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2066754668, now seen corresponding path program 1 times [2023-11-26 12:03:59,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:59,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39766739] [2023-11-26 12:03:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:59,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 12:03:59,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:59,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39766739] [2023-11-26 12:03:59,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39766739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:59,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:59,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766931938] [2023-11-26 12:03:59,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:59,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:59,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:59,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2023-11-26 12:03:59,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:59,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:59,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2023-11-26 12:03:59,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:01,507 INFO L124 PetriNetUnfolderBase]: 17906/29865 cut-off events. [2023-11-26 12:04:01,507 INFO L125 PetriNetUnfolderBase]: For 4552/4795 co-relation queries the response was YES. [2023-11-26 12:04:01,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58057 conditions, 29865 events. 17906/29865 cut-off events. For 4552/4795 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 246195 event pairs, 3220 based on Foata normal form. 540/28828 useless extension candidates. Maximal degree in co-relation 32997. Up to 18630 conditions per place. [2023-11-26 12:04:01,747 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 63 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-11-26 12:04:01,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 370 flow [2023-11-26 12:04:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-11-26 12:04:01,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2023-11-26 12:04:01,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-11-26 12:04:01,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-11-26 12:04:01,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:01,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-11-26 12:04:01,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:01,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:01,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:01,752 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 173 flow. Second operand 3 states and 156 transitions. [2023-11-26 12:04:01,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 370 flow [2023-11-26 12:04:01,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:04:01,760 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 172 flow [2023-11-26 12:04:01,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2023-11-26 12:04:01,761 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-26 12:04:01,761 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 172 flow [2023-11-26 12:04:01,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:01,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:01,762 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-26 12:04:01,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:04:01,763 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 12:04:01,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash 355091016, now seen corresponding path program 1 times [2023-11-26 12:04:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597425416] [2023-11-26 12:04:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:01,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:04:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:04:01,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:04:01,805 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:04:01,805 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-26 12:04:01,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-26 12:04:01,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-26 12:04:01,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-26 12:04:01,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-26 12:04:01,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-26 12:04:01,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-26 12:04:01,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-26 12:04:01,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-26 12:04:01,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-26 12:04:01,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-26 12:04:01,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-26 12:04:01,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-26 12:04:01,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-26 12:04:01,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-26 12:04:01,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-26 12:04:01,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-26 12:04:01,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:04:01,809 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:01,811 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:04:01,811 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-26 12:04:01,870 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:04:01,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 101 transitions, 230 flow [2023-11-26 12:04:01,888 INFO L124 PetriNetUnfolderBase]: 16/112 cut-off events. [2023-11-26 12:04:01,888 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 12:04:01,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 112 events. 16/112 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 388 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2023-11-26 12:04:01,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 101 transitions, 230 flow [2023-11-26 12:04:01,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 101 transitions, 230 flow [2023-11-26 12:04:01,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:01,899 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;@4a153cce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:01,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-26 12:04:01,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:04:01,903 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 12:04:01,903 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:04:01,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:01,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:04:01,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 12:04:01,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash 559226191, now seen corresponding path program 1 times [2023-11-26 12:04:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:01,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223459876] [2023-11-26 12:04:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:01,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:01,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223459876] [2023-11-26 12:04:01,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223459876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:01,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:01,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:04:01,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946052907] [2023-11-26 12:04:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:01,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:01,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 101 [2023-11-26 12:04:01,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:01,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:01,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 101 [2023-11-26 12:04:01,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:20,994 INFO L124 PetriNetUnfolderBase]: 133413/191772 cut-off events. [2023-11-26 12:04:20,994 INFO L125 PetriNetUnfolderBase]: For 11891/11891 co-relation queries the response was YES. [2023-11-26 12:04:21,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366012 conditions, 191772 events. 133413/191772 cut-off events. For 11891/11891 co-relation queries the response was YES. Maximal size of possible extension queue 6746. Compared 1550666 event pairs, 79712 based on Foata normal form. 38296/220219 useless extension candidates. Maximal degree in co-relation 237324. Up to 140997 conditions per place. [2023-11-26 12:04:22,461 INFO L140 encePairwiseOnDemand]: 89/101 looper letters, 81 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2023-11-26 12:04:22,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 126 transitions, 467 flow [2023-11-26 12:04:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-11-26 12:04:22,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7557755775577558 [2023-11-26 12:04:22,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-11-26 12:04:22,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-11-26 12:04:22,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:22,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-11-26 12:04:22,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 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) [2023-11-26 12:04:22,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,467 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 230 flow. Second operand 3 states and 229 transitions. [2023-11-26 12:04:22,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 126 transitions, 467 flow [2023-11-26 12:04:22,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 126 transitions, 455 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-26 12:04:22,476 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 208 flow [2023-11-26 12:04:22,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2023-11-26 12:04:22,477 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-11-26 12:04:22,478 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 208 flow [2023-11-26 12:04:22,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:22,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:04:22,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:04:22,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 12:04:22,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:22,479 INFO L85 PathProgramCache]: Analyzing trace with hash 156143377, now seen corresponding path program 1 times [2023-11-26 12:04:22,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980419921] [2023-11-26 12:04:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980419921] [2023-11-26 12:04:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980419921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:22,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:22,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:04:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901782040] [2023-11-26 12:04:22,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:22,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:22,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:22,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:22,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 101 [2023-11-26 12:04:22,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:22,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 101 [2023-11-26 12:04:22,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand