./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:13:54,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:13:55,050 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:13:55,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:13:55,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:13:55,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:13:55,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:13:55,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:13:55,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:13:55,082 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:13:55,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:13:55,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:13:55,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:13:55,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:13:55,085 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:13:55,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:13:55,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:13:55,087 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:13:55,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:13:55,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:13:55,089 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:13:55,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:13:55,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:13:55,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:13:55,090 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:13:55,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:13:55,091 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:13:55,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:13:55,092 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:13:55,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:13:55,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:13:55,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:13:55,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:13:55,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:13:55,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:13:55,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:13:55,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:13:55,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:13:55,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:13:55,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:13:55,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:13:55,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:13:55,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:13:55,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:13:55,096 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_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2023-11-29 01:13:55,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:13:55,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:13:55,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:13:55,353 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:13:55,353 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:13:55,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-11-29 01:13:58,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:13:58,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:13:58,381 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-11-29 01:13:58,399 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/data/ab50899a3/5a18757d6fcf4961841e80bee2f94906/FLAGa737c55c7 [2023-11-29 01:13:58,414 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/data/ab50899a3/5a18757d6fcf4961841e80bee2f94906 [2023-11-29 01:13:58,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:13:58,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:13:58,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:13:58,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:13:58,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:13:58,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:13:58" (1/1) ... [2023-11-29 01:13:58,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206b3cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:58, skipping insertion in model container [2023-11-29 01:13:58,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:13:58" (1/1) ... [2023-11-29 01:13:58,483 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:13:58,981 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:13:58,982 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:13:58,982 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:13:58,983 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:13:59,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:13:59,031 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:13:59,073 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:13:59,073 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:13:59,074 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:13:59,074 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:13:59,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:13:59,145 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:13:59,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59 WrapperNode [2023-11-29 01:13:59,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:13:59,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:13:59,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:13:59,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:13:59,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,209 INFO L138 Inliner]: procedures = 280, calls = 56, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 262 [2023-11-29 01:13:59,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:13:59,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:13:59,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:13:59,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:13:59,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,254 INFO L175 MemorySlicer]: Split 30 memory accesses to 4 slices as follows [2, 5, 2, 21]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 14 writes are split as follows [0, 0, 1, 13]. [2023-11-29 01:13:59,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:13:59,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:13:59,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:13:59,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:13:59,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (1/1) ... [2023-11-29 01:13:59,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:13:59,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:13:59,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:13:59,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:13:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:13:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:13:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:13:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:13:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:13:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:13:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:13:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:13:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:13:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:13:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:13:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:13:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:13:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:13:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 01:13:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 01:13:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:13:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:13:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:13:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:13:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:13:59,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:13:59,353 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:13:59,516 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:13:59,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:13:59,910 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:14:00,196 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:14:00,197 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-29 01:14:00,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:14:00 BoogieIcfgContainer [2023-11-29 01:14:00,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:14:00,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:14:00,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:14:00,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:14:00,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:13:58" (1/3) ... [2023-11-29 01:14:00,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e14554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:14:00, skipping insertion in model container [2023-11-29 01:14:00,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:13:59" (2/3) ... [2023-11-29 01:14:00,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e14554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:14:00, skipping insertion in model container [2023-11-29 01:14:00,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:14:00" (3/3) ... [2023-11-29 01:14:00,204 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-11-29 01:14:00,211 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:14:00,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:14:00,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 01:14:00,219 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:14:00,268 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 01:14:00,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 87 transitions, 181 flow [2023-11-29 01:14:00,335 INFO L124 PetriNetUnfolderBase]: 16/91 cut-off events. [2023-11-29 01:14:00,335 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:14:00,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 16/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 258 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-11-29 01:14:00,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 87 transitions, 181 flow [2023-11-29 01:14:00,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 86 transitions, 179 flow [2023-11-29 01:14:00,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:14:00,358 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;@14bbf45d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:14:00,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-29 01:14:00,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:14:00,364 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-29 01:14:00,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:14:00,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:00,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 01:14:00,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:00,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:00,370 INFO L85 PathProgramCache]: Analyzing trace with hash 23092311, now seen corresponding path program 1 times [2023-11-29 01:14:00,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:00,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416908629] [2023-11-29 01:14:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:00,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:00,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:00,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180591312] [2023-11-29 01:14:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:00,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:00,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:00,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:00,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:14:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:00,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:00,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:00,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416908629] [2023-11-29 01:14:00,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:00,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180591312] [2023-11-29 01:14:00,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180591312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:00,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:00,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:00,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273433121] [2023-11-29 01:14:00,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:00,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:00,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:00,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:00,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:00,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:00,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:00,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:00,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:01,006 INFO L124 PetriNetUnfolderBase]: 150/479 cut-off events. [2023-11-29 01:14:01,006 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:14:01,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 479 events. 150/479 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2280 event pairs, 126 based on Foata normal form. 43/436 useless extension candidates. Maximal degree in co-relation 729. Up to 310 conditions per place. [2023-11-29 01:14:01,012 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 44 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-29 01:14:01,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 261 flow [2023-11-29 01:14:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2023-11-29 01:14:01,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6283524904214559 [2023-11-29 01:14:01,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2023-11-29 01:14:01,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2023-11-29 01:14:01,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:01,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2023-11-29 01:14:01,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,037 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 179 flow. Second operand 3 states and 164 transitions. [2023-11-29 01:14:01,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 261 flow [2023-11-29 01:14:01,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 261 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:14:01,045 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 175 flow [2023-11-29 01:14:01,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-11-29 01:14:01,049 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-11-29 01:14:01,049 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 175 flow [2023-11-29 01:14:01,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:01,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 01:14:01,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:14:01,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:01,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:01,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:01,252 INFO L85 PathProgramCache]: Analyzing trace with hash 23092328, now seen corresponding path program 1 times [2023-11-29 01:14:01,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:01,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486361467] [2023-11-29 01:14:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:01,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:01,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486361467] [2023-11-29 01:14:01,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486361467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:01,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:01,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:01,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896338756] [2023-11-29 01:14:01,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:01,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:01,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:01,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:01,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:01,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:01,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:01,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:01,683 INFO L124 PetriNetUnfolderBase]: 150/493 cut-off events. [2023-11-29 01:14:01,683 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 01:14:01,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 493 events. 150/493 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2363 event pairs, 126 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 789. Up to 315 conditions per place. [2023-11-29 01:14:01,688 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 42 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-29 01:14:01,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 267 flow [2023-11-29 01:14:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-29 01:14:01,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578544061302682 [2023-11-29 01:14:01,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-29 01:14:01,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-29 01:14:01,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:01,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-29 01:14:01,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,694 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 175 flow. Second operand 3 states and 151 transitions. [2023-11-29 01:14:01,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 267 flow [2023-11-29 01:14:01,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:14:01,698 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 189 flow [2023-11-29 01:14:01,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-11-29 01:14:01,699 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-11-29 01:14:01,699 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 189 flow [2023-11-29 01:14:01,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:01,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:14:01,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:14:01,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:01,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash 716897665, now seen corresponding path program 1 times [2023-11-29 01:14:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883095253] [2023-11-29 01:14:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:01,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:01,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:01,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916129855] [2023-11-29 01:14:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:01,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:01,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:01,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:01,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:14:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:01,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:01,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:01,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:01,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883095253] [2023-11-29 01:14:01,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:01,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916129855] [2023-11-29 01:14:01,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916129855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:01,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:01,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:01,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379707146] [2023-11-29 01:14:01,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:01,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:14:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:14:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:14:01,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:01,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:01,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:01,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:01,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:02,248 INFO L124 PetriNetUnfolderBase]: 150/489 cut-off events. [2023-11-29 01:14:02,248 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 01:14:02,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 489 events. 150/489 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2338 event pairs, 126 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 774. Up to 307 conditions per place. [2023-11-29 01:14:02,252 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 37 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-11-29 01:14:02,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 271 flow [2023-11-29 01:14:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:14:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:14:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-29 01:14:02,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2023-11-29 01:14:02,255 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-29 01:14:02,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-29 01:14:02,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:02,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-29 01:14:02,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,259 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 189 flow. Second operand 4 states and 181 transitions. [2023-11-29 01:14:02,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 271 flow [2023-11-29 01:14:02,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:14:02,263 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 195 flow [2023-11-29 01:14:02,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-29 01:14:02,264 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-11-29 01:14:02,264 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 195 flow [2023-11-29 01:14:02,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:02,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:02,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:14:02,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 01:14:02,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:02,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 748991838, now seen corresponding path program 1 times [2023-11-29 01:14:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775696730] [2023-11-29 01:14:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:02,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:02,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689978377] [2023-11-29 01:14:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:02,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:02,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:02,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:02,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:14:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:02,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:02,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:02,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:02,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:02,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775696730] [2023-11-29 01:14:02,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:02,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689978377] [2023-11-29 01:14:02,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689978377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:02,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:02,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:02,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347569283] [2023-11-29 01:14:02,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:14:02,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:14:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:14:02,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:02,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:02,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:02,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:02,972 INFO L124 PetriNetUnfolderBase]: 150/487 cut-off events. [2023-11-29 01:14:02,973 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-29 01:14:02,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 487 events. 150/487 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2326 event pairs, 126 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 761. Up to 315 conditions per place. [2023-11-29 01:14:02,977 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 40 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-11-29 01:14:02,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 285 flow [2023-11-29 01:14:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:14:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:14:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2023-11-29 01:14:02,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258620689655172 [2023-11-29 01:14:02,979 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 183 transitions. [2023-11-29 01:14:02,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 183 transitions. [2023-11-29 01:14:02,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:02,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 183 transitions. [2023-11-29 01:14:02,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,982 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,982 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 195 flow. Second operand 4 states and 183 transitions. [2023-11-29 01:14:02,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 285 flow [2023-11-29 01:14:02,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 273 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:14:02,986 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 201 flow [2023-11-29 01:14:02,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-11-29 01:14:02,987 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-11-29 01:14:02,987 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 201 flow [2023-11-29 01:14:02,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:02,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:02,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:02,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:14:03,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:03,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:03,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:03,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1773324926, now seen corresponding path program 1 times [2023-11-29 01:14:03,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:03,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872838303] [2023-11-29 01:14:03,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:03,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:03,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:03,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463203910] [2023-11-29 01:14:03,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:03,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:03,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:03,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:03,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:14:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:03,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:14:03,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:03,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872838303] [2023-11-29 01:14:03,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463203910] [2023-11-29 01:14:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463203910] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:03,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:14:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 01:14:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344400051] [2023-11-29 01:14:03,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:03,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:14:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:03,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:14:03,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:14:03,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 01:14:03,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:03,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:03,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 01:14:03,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:03,947 INFO L124 PetriNetUnfolderBase]: 150/501 cut-off events. [2023-11-29 01:14:03,947 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 01:14:03,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 501 events. 150/501 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2408 event pairs, 126 based on Foata normal form. 6/425 useless extension candidates. Maximal degree in co-relation 793. Up to 309 conditions per place. [2023-11-29 01:14:03,950 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 42 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2023-11-29 01:14:03,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 313 flow [2023-11-29 01:14:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:14:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:14:03,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 289 transitions. [2023-11-29 01:14:03,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745484400656814 [2023-11-29 01:14:03,952 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 289 transitions. [2023-11-29 01:14:03,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 289 transitions. [2023-11-29 01:14:03,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:03,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 289 transitions. [2023-11-29 01:14:03,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:03,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:03,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:03,957 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 201 flow. Second operand 7 states and 289 transitions. [2023-11-29 01:14:03,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 313 flow [2023-11-29 01:14:03,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:03,960 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 241 flow [2023-11-29 01:14:03,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-11-29 01:14:03,961 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-29 01:14:03,961 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 241 flow [2023-11-29 01:14:03,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:03,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:03,962 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2023-11-29 01:14:03,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:14:04,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:04,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:04,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1126159074, now seen corresponding path program 1 times [2023-11-29 01:14:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596408020] [2023-11-29 01:14:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:04,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:04,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048875750] [2023-11-29 01:14:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:04,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:04,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:04,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:04,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:14:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:04,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:14:04,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:04,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:04,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:04,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596408020] [2023-11-29 01:14:04,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:04,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048875750] [2023-11-29 01:14:04,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048875750] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:04,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:14:04,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 01:14:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255840433] [2023-11-29 01:14:04,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:04,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:14:04,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:14:04,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:14:04,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 01:14:04,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 241 flow. Second operand has 14 states, 14 states have (on average 35.5) internal successors, (497), 14 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:04,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:04,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 01:14:04,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:05,289 INFO L124 PetriNetUnfolderBase]: 152/513 cut-off events. [2023-11-29 01:14:05,289 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-29 01:14:05,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 513 events. 152/513 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2483 event pairs, 126 based on Foata normal form. 4/435 useless extension candidates. Maximal degree in co-relation 834. Up to 309 conditions per place. [2023-11-29 01:14:05,293 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 40 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2023-11-29 01:14:05,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 375 flow [2023-11-29 01:14:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:14:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 01:14:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 427 transitions. [2023-11-29 01:14:05,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44618599791013586 [2023-11-29 01:14:05,296 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 427 transitions. [2023-11-29 01:14:05,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 427 transitions. [2023-11-29 01:14:05,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:05,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 427 transitions. [2023-11-29 01:14:05,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:05,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:05,301 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:05,301 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 241 flow. Second operand 11 states and 427 transitions. [2023-11-29 01:14:05,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 375 flow [2023-11-29 01:14:05,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 363 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 01:14:05,306 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 280 flow [2023-11-29 01:14:05,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=280, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2023-11-29 01:14:05,307 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2023-11-29 01:14:05,307 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 280 flow [2023-11-29 01:14:05,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 35.5) internal successors, (497), 14 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:05,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:05,308 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-29 01:14:05,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:14:05,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:05,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:05,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash 92912962, now seen corresponding path program 2 times [2023-11-29 01:14:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:05,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97178998] [2023-11-29 01:14:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:05,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:05,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810748885] [2023-11-29 01:14:05,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:14:05,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:05,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:05,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:05,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:14:05,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:14:05,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:05,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:05,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:14:05,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:05,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97178998] [2023-11-29 01:14:05,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810748885] [2023-11-29 01:14:05,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810748885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:05,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:05,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:14:05,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271875901] [2023-11-29 01:14:05,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:05,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:14:05,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:05,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:14:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:14:05,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:05,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:05,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:05,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:05,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:06,060 INFO L124 PetriNetUnfolderBase]: 152/511 cut-off events. [2023-11-29 01:14:06,060 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-29 01:14:06,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 511 events. 152/511 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2481 event pairs, 126 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 888. Up to 302 conditions per place. [2023-11-29 01:14:06,064 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 42 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-11-29 01:14:06,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 374 flow [2023-11-29 01:14:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:14:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:14:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-29 01:14:06,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2023-11-29 01:14:06,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-29 01:14:06,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-29 01:14:06,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:06,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-29 01:14:06,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:06,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:06,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:06,068 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 280 flow. Second operand 4 states and 181 transitions. [2023-11-29 01:14:06,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 374 flow [2023-11-29 01:14:06,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 334 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-29 01:14:06,072 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 250 flow [2023-11-29 01:14:06,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-29 01:14:06,073 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-29 01:14:06,073 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 250 flow [2023-11-29 01:14:06,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:06,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:06,073 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-29 01:14:06,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:14:06,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:06,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:06,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1414664702, now seen corresponding path program 1 times [2023-11-29 01:14:06,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:06,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713148009] [2023-11-29 01:14:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:06,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174826366] [2023-11-29 01:14:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:06,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:06,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:06,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:06,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:14:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:06,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:14:06,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:06,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713148009] [2023-11-29 01:14:06,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174826366] [2023-11-29 01:14:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174826366] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:06,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:14:06,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 01:14:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227818904] [2023-11-29 01:14:06,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:06,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:14:06,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:14:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:14:06,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 01:14:06,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 35.4375) internal successors, (567), 16 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:06,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:06,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 01:14:06,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:07,497 INFO L124 PetriNetUnfolderBase]: 150/545 cut-off events. [2023-11-29 01:14:07,497 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-29 01:14:07,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 545 events. 150/545 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2551 event pairs, 126 based on Foata normal form. 8/473 useless extension candidates. Maximal degree in co-relation 854. Up to 309 conditions per place. [2023-11-29 01:14:07,500 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 45 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-11-29 01:14:07,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 429 flow [2023-11-29 01:14:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:14:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 01:14:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 573 transitions. [2023-11-29 01:14:07,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43908045977011495 [2023-11-29 01:14:07,504 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 573 transitions. [2023-11-29 01:14:07,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 573 transitions. [2023-11-29 01:14:07,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:07,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 573 transitions. [2023-11-29 01:14:07,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 38.2) internal successors, (573), 15 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:07,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:07,509 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:07,509 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 250 flow. Second operand 15 states and 573 transitions. [2023-11-29 01:14:07,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 429 flow [2023-11-29 01:14:07,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 408 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:14:07,512 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 316 flow [2023-11-29 01:14:07,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=316, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2023-11-29 01:14:07,512 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2023-11-29 01:14:07,513 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 316 flow [2023-11-29 01:14:07,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 35.4375) internal successors, (567), 16 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:07,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:07,513 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-29 01:14:07,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:14:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:07,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:07,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash 710729346, now seen corresponding path program 2 times [2023-11-29 01:14:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:07,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420140519] [2023-11-29 01:14:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:07,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:07,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053754556] [2023-11-29 01:14:07,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:14:07,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:07,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:07,838 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:07,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:14:08,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:14:08,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:08,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:08,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 01:14:08,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:08,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:08,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420140519] [2023-11-29 01:14:08,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:08,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053754556] [2023-11-29 01:14:08,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053754556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:08,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:08,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:14:08,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392421215] [2023-11-29 01:14:08,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:08,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:14:08,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:08,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:14:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:14:08,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:08,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:08,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:08,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:08,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:08,431 INFO L124 PetriNetUnfolderBase]: 150/544 cut-off events. [2023-11-29 01:14:08,431 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2023-11-29 01:14:08,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 544 events. 150/544 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2550 event pairs, 126 based on Foata normal form. 1/465 useless extension candidates. Maximal degree in co-relation 876. Up to 321 conditions per place. [2023-11-29 01:14:08,435 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 66 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-11-29 01:14:08,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 579 flow [2023-11-29 01:14:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:14:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:14:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2023-11-29 01:14:08,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2023-11-29 01:14:08,437 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 186 transitions. [2023-11-29 01:14:08,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 186 transitions. [2023-11-29 01:14:08,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:08,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 186 transitions. [2023-11-29 01:14:08,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:08,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:08,439 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:08,439 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 316 flow. Second operand 4 states and 186 transitions. [2023-11-29 01:14:08,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 579 flow [2023-11-29 01:14:08,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 555 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:14:08,443 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 328 flow [2023-11-29 01:14:08,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2023-11-29 01:14:08,444 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2023-11-29 01:14:08,444 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 328 flow [2023-11-29 01:14:08,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:08,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:08,445 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:08,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:14:08,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:08,645 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:08,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash -876738567, now seen corresponding path program 1 times [2023-11-29 01:14:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:08,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838011857] [2023-11-29 01:14:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:08,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:08,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281314520] [2023-11-29 01:14:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:08,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:08,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:08,760 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:08,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:14:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:09,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:14:09,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:09,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:09,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:09,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838011857] [2023-11-29 01:14:09,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:09,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281314520] [2023-11-29 01:14:09,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281314520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:09,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:14:09,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-29 01:14:09,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269558106] [2023-11-29 01:14:09,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:09,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 01:14:09,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 01:14:09,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:14:09,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 01:14:09,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 328 flow. Second operand has 32 states, 32 states have (on average 35.625) internal successors, (1140), 32 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:09,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:09,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 01:14:09,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:11,069 INFO L124 PetriNetUnfolderBase]: 150/640 cut-off events. [2023-11-29 01:14:11,069 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-11-29 01:14:11,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 640 events. 150/640 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2587 event pairs, 126 based on Foata normal form. 16/576 useless extension candidates. Maximal degree in co-relation 1121. Up to 309 conditions per place. [2023-11-29 01:14:11,073 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 54 selfloop transitions, 31 changer transitions 0/118 dead transitions. [2023-11-29 01:14:11,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 748 flow [2023-11-29 01:14:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 01:14:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 01:14:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1145 transitions. [2023-11-29 01:14:11,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42454579162031886 [2023-11-29 01:14:11,078 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1145 transitions. [2023-11-29 01:14:11,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1145 transitions. [2023-11-29 01:14:11,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:11,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1145 transitions. [2023-11-29 01:14:11,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 36.935483870967744) internal successors, (1145), 31 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:11,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:11,098 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:11,098 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 328 flow. Second operand 31 states and 1145 transitions. [2023-11-29 01:14:11,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 748 flow [2023-11-29 01:14:11,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 118 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:11,103 INFO L231 Difference]: Finished difference. Result has 140 places, 107 transitions, 589 flow [2023-11-29 01:14:11,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=589, PETRI_PLACES=140, PETRI_TRANSITIONS=107} [2023-11-29 01:14:11,104 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 66 predicate places. [2023-11-29 01:14:11,104 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 107 transitions, 589 flow [2023-11-29 01:14:11,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 35.625) internal successors, (1140), 32 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:11,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:11,105 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:11,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:14:11,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:14:11,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:11,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1945860359, now seen corresponding path program 2 times [2023-11-29 01:14:11,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:11,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166695196] [2023-11-29 01:14:11,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:11,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:11,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:11,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391357084] [2023-11-29 01:14:11,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:14:11,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:11,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:11,525 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:11,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:14:12,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:14:12,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:12,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:12,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2023-11-29 01:14:12,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:12,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:12,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166695196] [2023-11-29 01:14:12,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:12,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391357084] [2023-11-29 01:14:12,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391357084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:12,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:12,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:12,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676635987] [2023-11-29 01:14:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:12,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:14:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:14:12,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:14:12,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:12,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 107 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:12,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:12,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:12,458 INFO L124 PetriNetUnfolderBase]: 171/641 cut-off events. [2023-11-29 01:14:12,458 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-11-29 01:14:12,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1558 conditions, 641 events. 171/641 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2685 event pairs, 41 based on Foata normal form. 22/567 useless extension candidates. Maximal degree in co-relation 1207. Up to 208 conditions per place. [2023-11-29 01:14:12,463 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 112 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2023-11-29 01:14:12,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 152 transitions, 911 flow [2023-11-29 01:14:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:14:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:14:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2023-11-29 01:14:12,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6522988505747126 [2023-11-29 01:14:12,465 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 227 transitions. [2023-11-29 01:14:12,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 227 transitions. [2023-11-29 01:14:12,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:12,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 227 transitions. [2023-11-29 01:14:12,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:12,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:12,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:12,467 INFO L175 Difference]: Start difference. First operand has 140 places, 107 transitions, 589 flow. Second operand 4 states and 227 transitions. [2023-11-29 01:14:12,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 152 transitions, 911 flow [2023-11-29 01:14:12,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 152 transitions, 885 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-11-29 01:14:12,477 INFO L231 Difference]: Finished difference. Result has 130 places, 106 transitions, 569 flow [2023-11-29 01:14:12,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=130, PETRI_TRANSITIONS=106} [2023-11-29 01:14:12,478 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2023-11-29 01:14:12,478 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 106 transitions, 569 flow [2023-11-29 01:14:12,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:12,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:12,479 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:12,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:14:12,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:14:12,679 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:12,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash -192128270, now seen corresponding path program 1 times [2023-11-29 01:14:12,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:12,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780287559] [2023-11-29 01:14:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:12,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:12,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:12,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952462284] [2023-11-29 01:14:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:12,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:12,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:12,875 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:12,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:14:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:13,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:14:13,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:14,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:14,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780287559] [2023-11-29 01:14:14,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952462284] [2023-11-29 01:14:14,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952462284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:14,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:14:14,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-29 01:14:14,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82579019] [2023-11-29 01:14:14,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 01:14:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 01:14:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 01:14:15,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 01:14:15,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 106 transitions, 569 flow. Second operand has 61 states, 61 states have (on average 35.59016393442623) internal successors, (2171), 61 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:15,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:15,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 01:14:15,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:18,308 INFO L124 PetriNetUnfolderBase]: 150/817 cut-off events. [2023-11-29 01:14:18,308 INFO L125 PetriNetUnfolderBase]: For 3485/3485 co-relation queries the response was YES. [2023-11-29 01:14:18,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 817 events. 150/817 cut-off events. For 3485/3485 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2639 event pairs, 126 based on Foata normal form. 30/793 useless extension candidates. Maximal degree in co-relation 1679. Up to 309 conditions per place. [2023-11-29 01:14:18,312 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 69 selfloop transitions, 61 changer transitions 0/162 dead transitions. [2023-11-29 01:14:18,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 162 transitions, 1516 flow [2023-11-29 01:14:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 01:14:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-29 01:14:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2217 transitions. [2023-11-29 01:14:18,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177501413227812 [2023-11-29 01:14:18,320 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 2217 transitions. [2023-11-29 01:14:18,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 2217 transitions. [2023-11-29 01:14:18,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:18,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 2217 transitions. [2023-11-29 01:14:18,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 36.34426229508197) internal successors, (2217), 61 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:18,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 87.0) internal successors, (5394), 62 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:18,335 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 87.0) internal successors, (5394), 62 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:18,336 INFO L175 Difference]: Start difference. First operand has 130 places, 106 transitions, 569 flow. Second operand 61 states and 2217 transitions. [2023-11-29 01:14:18,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 162 transitions, 1516 flow [2023-11-29 01:14:18,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 162 transitions, 1508 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:14:18,346 INFO L231 Difference]: Finished difference. Result has 203 places, 137 transitions, 1141 flow [2023-11-29 01:14:18,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1141, PETRI_PLACES=203, PETRI_TRANSITIONS=137} [2023-11-29 01:14:18,347 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 129 predicate places. [2023-11-29 01:14:18,347 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 137 transitions, 1141 flow [2023-11-29 01:14:18,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 35.59016393442623) internal successors, (2171), 61 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:18,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:18,349 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:18,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:14:18,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:14:18,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:18,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1058977844, now seen corresponding path program 2 times [2023-11-29 01:14:18,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790602635] [2023-11-29 01:14:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:18,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:18,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308677609] [2023-11-29 01:14:18,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:14:18,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:19,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:19,001 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:19,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:14:19,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:14:19,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:19,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:19,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2023-11-29 01:14:19,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:19,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790602635] [2023-11-29 01:14:19,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:19,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308677609] [2023-11-29 01:14:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308677609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:19,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294625073] [2023-11-29 01:14:19,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:19,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:14:19,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:19,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:14:19,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:14:19,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:19,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 137 transitions, 1141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:19,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:19,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:19,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:20,315 INFO L124 PetriNetUnfolderBase]: 144/735 cut-off events. [2023-11-29 01:14:20,315 INFO L125 PetriNetUnfolderBase]: For 3349/3349 co-relation queries the response was YES. [2023-11-29 01:14:20,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 735 events. 144/735 cut-off events. For 3349/3349 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2224 event pairs, 0 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1712. Up to 355 conditions per place. [2023-11-29 01:14:20,320 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 143 selfloop transitions, 3 changer transitions 0/183 dead transitions. [2023-11-29 01:14:20,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 183 transitions, 1525 flow [2023-11-29 01:14:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:14:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:14:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2023-11-29 01:14:20,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2023-11-29 01:14:20,321 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 228 transitions. [2023-11-29 01:14:20,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 228 transitions. [2023-11-29 01:14:20,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:20,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 228 transitions. [2023-11-29 01:14:20,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:20,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:20,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:20,323 INFO L175 Difference]: Start difference. First operand has 203 places, 137 transitions, 1141 flow. Second operand 4 states and 228 transitions. [2023-11-29 01:14:20,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 183 transitions, 1525 flow [2023-11-29 01:14:20,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 183 transitions, 1467 flow, removed 1 selfloop flow, removed 28 redundant places. [2023-11-29 01:14:20,347 INFO L231 Difference]: Finished difference. Result has 178 places, 136 transitions, 1091 flow [2023-11-29 01:14:20,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1091, PETRI_PLACES=178, PETRI_TRANSITIONS=136} [2023-11-29 01:14:20,348 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 104 predicate places. [2023-11-29 01:14:20,349 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 136 transitions, 1091 flow [2023-11-29 01:14:20,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:20,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:20,349 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-29 01:14:20,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:14:20,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:14:20,550 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:20,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:20,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1035041887, now seen corresponding path program 1 times [2023-11-29 01:14:20,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:20,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850741465] [2023-11-29 01:14:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:20,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765026044] [2023-11-29 01:14:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:20,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:20,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:20,956 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:20,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:14:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:24,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:14:24,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 01:14:24,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:24,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850741465] [2023-11-29 01:14:24,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765026044] [2023-11-29 01:14:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765026044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:24,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:24,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:14:24,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885064455] [2023-11-29 01:14:24,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:24,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:14:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:14:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:14:24,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 01:14:24,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 136 transitions, 1091 flow. Second operand has 9 states, 9 states have (on average 31.444444444444443) internal successors, (283), 9 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:24,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:24,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 01:14:24,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:25,383 INFO L124 PetriNetUnfolderBase]: 150/779 cut-off events. [2023-11-29 01:14:25,383 INFO L125 PetriNetUnfolderBase]: For 3193/3193 co-relation queries the response was YES. [2023-11-29 01:14:25,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 779 events. 150/779 cut-off events. For 3193/3193 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2430 event pairs, 126 based on Foata normal form. 29/754 useless extension candidates. Maximal degree in co-relation 1710. Up to 299 conditions per place. [2023-11-29 01:14:25,390 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 102 selfloop transitions, 73 changer transitions 0/203 dead transitions. [2023-11-29 01:14:25,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 203 transitions, 2241 flow [2023-11-29 01:14:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:14:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 01:14:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 382 transitions. [2023-11-29 01:14:25,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991640543364681 [2023-11-29 01:14:25,393 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 382 transitions. [2023-11-29 01:14:25,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 382 transitions. [2023-11-29 01:14:25,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:25,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 382 transitions. [2023-11-29 01:14:25,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 34.72727272727273) internal successors, (382), 11 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:25,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:25,397 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:25,398 INFO L175 Difference]: Start difference. First operand has 178 places, 136 transitions, 1091 flow. Second operand 11 states and 382 transitions. [2023-11-29 01:14:25,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 203 transitions, 2241 flow [2023-11-29 01:14:25,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 203 transitions, 2235 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:14:25,431 INFO L231 Difference]: Finished difference. Result has 190 places, 202 transitions, 2299 flow [2023-11-29 01:14:25,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2299, PETRI_PLACES=190, PETRI_TRANSITIONS=202} [2023-11-29 01:14:25,432 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 116 predicate places. [2023-11-29 01:14:25,432 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 202 transitions, 2299 flow [2023-11-29 01:14:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.444444444444443) internal successors, (283), 9 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:25,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:25,433 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:25,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:14:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:14:25,633 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:25,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash 229564695, now seen corresponding path program 1 times [2023-11-29 01:14:25,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:25,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291718241] [2023-11-29 01:14:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:25,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:26,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271605666] [2023-11-29 01:14:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:26,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:26,057 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:26,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:14:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:27,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:14:27,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2207 trivial. 0 not checked. [2023-11-29 01:14:27,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2207 trivial. 0 not checked. [2023-11-29 01:14:27,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:27,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291718241] [2023-11-29 01:14:27,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:27,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271605666] [2023-11-29 01:14:27,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271605666] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:27,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:14:27,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 01:14:27,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053531073] [2023-11-29 01:14:27,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:27,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:14:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:27,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:14:27,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:14:27,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:14:27,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 202 transitions, 2299 flow. Second operand has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:27,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:27,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:14:27,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:28,486 INFO L124 PetriNetUnfolderBase]: 151/964 cut-off events. [2023-11-29 01:14:28,486 INFO L125 PetriNetUnfolderBase]: For 6733/6733 co-relation queries the response was YES. [2023-11-29 01:14:28,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3692 conditions, 964 events. 151/964 cut-off events. For 6733/6733 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2174 event pairs, 126 based on Foata normal form. 3/913 useless extension candidates. Maximal degree in co-relation 2867. Up to 300 conditions per place. [2023-11-29 01:14:28,492 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 218 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2023-11-29 01:14:28,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 266 transitions, 3811 flow [2023-11-29 01:14:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:14:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:14:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2023-11-29 01:14:28,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909688013136289 [2023-11-29 01:14:28,494 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 299 transitions. [2023-11-29 01:14:28,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 299 transitions. [2023-11-29 01:14:28,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:28,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 299 transitions. [2023-11-29 01:14:28,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:28,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:28,495 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:28,496 INFO L175 Difference]: Start difference. First operand has 190 places, 202 transitions, 2299 flow. Second operand 7 states and 299 transitions. [2023-11-29 01:14:28,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 266 transitions, 3811 flow [2023-11-29 01:14:28,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 266 transitions, 3793 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 01:14:28,527 INFO L231 Difference]: Finished difference. Result has 196 places, 205 transitions, 2399 flow [2023-11-29 01:14:28,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2399, PETRI_PLACES=196, PETRI_TRANSITIONS=205} [2023-11-29 01:14:28,528 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 122 predicate places. [2023-11-29 01:14:28,528 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 205 transitions, 2399 flow [2023-11-29 01:14:28,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:28,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:28,529 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-29 01:14:28,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:14:28,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:14:28,729 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:28,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:28,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2021528151, now seen corresponding path program 1 times [2023-11-29 01:14:28,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:28,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137902195] [2023-11-29 01:14:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:28,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:29,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:29,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134894170] [2023-11-29 01:14:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:29,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:29,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:29,225 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:29,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:14:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:33,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:14:33,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 01:14:33,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 01:14:34,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137902195] [2023-11-29 01:14:34,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:14:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134894170] [2023-11-29 01:14:34,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134894170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:34,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:14:34,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 01:14:34,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585746104] [2023-11-29 01:14:34,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:34,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:14:34,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:34,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:14:34,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:14:34,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 01:14:34,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 205 transitions, 2399 flow. Second operand has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:34,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:34,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 01:14:34,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:35,473 INFO L124 PetriNetUnfolderBase]: 151/933 cut-off events. [2023-11-29 01:14:35,473 INFO L125 PetriNetUnfolderBase]: For 6899/6899 co-relation queries the response was YES. [2023-11-29 01:14:35,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 933 events. 151/933 cut-off events. For 6899/6899 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2142 event pairs, 126 based on Foata normal form. 31/910 useless extension candidates. Maximal degree in co-relation 2903. Up to 299 conditions per place. [2023-11-29 01:14:35,482 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 111 selfloop transitions, 136 changer transitions 0/275 dead transitions. [2023-11-29 01:14:35,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 275 transitions, 3987 flow [2023-11-29 01:14:35,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 01:14:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 01:14:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 638 transitions. [2023-11-29 01:14:35,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2023-11-29 01:14:35,485 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 638 transitions. [2023-11-29 01:14:35,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 638 transitions. [2023-11-29 01:14:35,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:35,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 638 transitions. [2023-11-29 01:14:35,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 33.578947368421055) internal successors, (638), 19 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:35,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:35,490 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:35,490 INFO L175 Difference]: Start difference. First operand has 196 places, 205 transitions, 2399 flow. Second operand 19 states and 638 transitions. [2023-11-29 01:14:35,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 275 transitions, 3987 flow [2023-11-29 01:14:35,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 275 transitions, 3979 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:14:35,540 INFO L231 Difference]: Finished difference. Result has 213 places, 271 transitions, 3879 flow [2023-11-29 01:14:35,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3879, PETRI_PLACES=213, PETRI_TRANSITIONS=271} [2023-11-29 01:14:35,540 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 139 predicate places. [2023-11-29 01:14:35,541 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 271 transitions, 3879 flow [2023-11-29 01:14:35,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:35,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:35,541 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 62, 62, 62, 3, 2, 2, 2, 1, 1] [2023-11-29 01:14:35,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:14:35,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:14:35,742 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:14:35,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash 226796667, now seen corresponding path program 2 times [2023-11-29 01:14:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:35,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878841985] [2023-11-29 01:14:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:36,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:14:36,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496090382] [2023-11-29 01:14:36,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:14:36,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:36,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:36,623 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:36,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:15:08,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:15:08,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:08,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 5793 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:15:08,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9773 backedges. 11 proven. 5352 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2023-11-29 01:15:08,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9773 backedges. 5 proven. 5358 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2023-11-29 01:15:19,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878841985] [2023-11-29 01:15:19,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:15:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496090382] [2023-11-29 01:15:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496090382] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:19,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:15:19,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-11-29 01:15:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416990977] [2023-11-29 01:15:19,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:19,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:15:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:15:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:15:20,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 01:15:20,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 271 transitions, 3879 flow. Second operand has 24 states, 24 states have (on average 31.833333333333332) internal successors, (764), 24 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:20,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:20,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 01:15:20,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:27,027 INFO L124 PetriNetUnfolderBase]: 152/1059 cut-off events. [2023-11-29 01:15:27,027 INFO L125 PetriNetUnfolderBase]: For 12276/12276 co-relation queries the response was YES. [2023-11-29 01:15:27,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 1059 events. 152/1059 cut-off events. For 12276/12276 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2361 event pairs, 126 based on Foata normal form. 56/1061 useless extension candidates. Maximal degree in co-relation 4130. Up to 299 conditions per place. [2023-11-29 01:15:27,036 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 38 selfloop transitions, 279 changer transitions 0/345 dead transitions. [2023-11-29 01:15:27,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 345 transitions, 5869 flow [2023-11-29 01:15:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 01:15:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 01:15:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1129 transitions. [2023-11-29 01:15:27,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37077175697865355 [2023-11-29 01:15:27,039 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1129 transitions. [2023-11-29 01:15:27,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1129 transitions. [2023-11-29 01:15:27,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:27,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1129 transitions. [2023-11-29 01:15:27,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 32.25714285714286) internal successors, (1129), 35 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:27,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 87.0) internal successors, (3132), 36 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:27,048 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 87.0) internal successors, (3132), 36 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:27,048 INFO L175 Difference]: Start difference. First operand has 213 places, 271 transitions, 3879 flow. Second operand 35 states and 1129 transitions. [2023-11-29 01:15:27,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 345 transitions, 5869 flow [2023-11-29 01:15:27,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 345 transitions, 5659 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-11-29 01:15:27,120 INFO L231 Difference]: Finished difference. Result has 232 places, 341 transitions, 5599 flow [2023-11-29 01:15:27,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5599, PETRI_PLACES=232, PETRI_TRANSITIONS=341} [2023-11-29 01:15:27,121 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 158 predicate places. [2023-11-29 01:15:27,121 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 341 transitions, 5599 flow [2023-11-29 01:15:27,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 31.833333333333332) internal successors, (764), 24 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:27,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:27,122 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:27,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:15:27,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:15:27,322 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:15:27,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:27,323 INFO L85 PathProgramCache]: Analyzing trace with hash -307960205, now seen corresponding path program 2 times [2023-11-29 01:15:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688883343] [2023-11-29 01:15:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:27,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:28,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:15:28,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334942610] [2023-11-29 01:15:28,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:28,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:28,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:28,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:28,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:15:32,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:15:32,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:32,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 8408 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:15:32,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20312 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 6617 trivial. 0 not checked. [2023-11-29 01:15:33,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 20312 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 6617 trivial. 0 not checked. [2023-11-29 01:15:33,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:33,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688883343] [2023-11-29 01:15:33,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:15:33,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334942610] [2023-11-29 01:15:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334942610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:33,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:15:33,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 01:15:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727237161] [2023-11-29 01:15:33,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:33,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:15:33,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:33,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:15:33,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:15:33,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 01:15:33,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 341 transitions, 5599 flow. Second operand has 16 states, 16 states have (on average 37.375) internal successors, (598), 16 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:33,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:33,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 01:15:33,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:35,475 INFO L124 PetriNetUnfolderBase]: 155/1525 cut-off events. [2023-11-29 01:15:35,475 INFO L125 PetriNetUnfolderBase]: For 23480/23480 co-relation queries the response was YES. [2023-11-29 01:15:35,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8444 conditions, 1525 events. 155/1525 cut-off events. For 23480/23480 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2118 event pairs, 126 based on Foata normal form. 4/1475 useless extension candidates. Maximal degree in co-relation 7618. Up to 336 conditions per place. [2023-11-29 01:15:35,484 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 461 selfloop transitions, 15 changer transitions 0/531 dead transitions. [2023-11-29 01:15:35,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 531 transitions, 10441 flow [2023-11-29 01:15:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:15:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 01:15:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 599 transitions. [2023-11-29 01:15:35,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590038314176245 [2023-11-29 01:15:35,487 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 599 transitions. [2023-11-29 01:15:35,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 599 transitions. [2023-11-29 01:15:35,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:35,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 599 transitions. [2023-11-29 01:15:35,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 39.93333333333333) internal successors, (599), 15 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:35,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:35,490 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:35,490 INFO L175 Difference]: Start difference. First operand has 232 places, 341 transitions, 5599 flow. Second operand 15 states and 599 transitions. [2023-11-29 01:15:35,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 531 transitions, 10441 flow [2023-11-29 01:15:35,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 531 transitions, 9431 flow, removed 90 selfloop flow, removed 26 redundant places. [2023-11-29 01:15:35,556 INFO L231 Difference]: Finished difference. Result has 225 places, 348 transitions, 5188 flow [2023-11-29 01:15:35,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5188, PETRI_PLACES=225, PETRI_TRANSITIONS=348} [2023-11-29 01:15:35,557 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 151 predicate places. [2023-11-29 01:15:35,557 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 348 transitions, 5188 flow [2023-11-29 01:15:35,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 37.375) internal successors, (598), 16 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:35,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:35,558 INFO L208 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:35,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:15:35,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:15:35,758 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 01:15:35,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash 933449515, now seen corresponding path program 3 times [2023-11-29 01:15:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058818469] [2023-11-29 01:15:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:35,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:38,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:15:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579477535] [2023-11-29 01:15:38,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:15:38,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:15:38,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:38,775 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:15:38,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51cc8a76-a24e-4e6a-b5d3-07b2776db781/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process