./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/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_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/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_5bf938ce-28ef-4faf-989e-655791086e72/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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:25:29,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:25:29,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:25:29,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:25:29,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:25:29,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:25:29,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:25:29,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:25:29,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:25:29,314 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:25:29,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:25:29,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:25:29,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:25:29,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:25:29,317 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:25:29,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:25:29,318 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:25:29,319 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:25:29,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:25:29,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:25:29,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:25:29,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:25:29,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:25:29,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:25:29,323 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:25:29,324 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:25:29,324 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:25:29,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:25:29,325 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:25:29,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:25:29,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:25:29,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:25:29,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:25:29,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:25:29,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:25:29,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:25:29,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:25:29,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:25:29,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:25:29,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:25:29,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:25:29,331 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:25:29,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:25:29,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:25:29,332 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_5bf938ce-28ef-4faf-989e-655791086e72/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2023-11-28 20:25:29,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:25:29,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:25:29,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:25:29,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:25:29,615 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:25:29,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-28 20:25:32,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:25:32,889 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:25:32,890 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-28 20:25:32,898 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/data/f1308dcd1/a5421d34b5c346bd8906dac389f9c3c9/FLAG015781316 [2023-11-28 20:25:32,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/data/f1308dcd1/a5421d34b5c346bd8906dac389f9c3c9 [2023-11-28 20:25:32,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:25:32,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:25:32,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:25:32,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:25:32,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:25:32,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:25:32" (1/1) ... [2023-11-28 20:25:32,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d47a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:32, skipping insertion in model container [2023-11-28 20:25:32,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:25:32" (1/1) ... [2023-11-28 20:25:32,966 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:25:33,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:25:33,217 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:25:33,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:25:33,269 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:25:33,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33 WrapperNode [2023-11-28 20:25:33,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:25:33,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:25:33,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:25:33,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:25:33,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,334 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 350 [2023-11-28 20:25:33,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:25:33,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:25:33,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:25:33,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:25:33,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,377 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 2, 2, 15]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 3]. [2023-11-28 20:25:33,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:25:33,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:25:33,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:25:33,415 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:25:33,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (1/1) ... [2023-11-28 20:25:33,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:25:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:33,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:25:33,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:25:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:25:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:25:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:25:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:25:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:25:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:25:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 20:25:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:25:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:25:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:25:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:25:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 20:25:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 20:25:33,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 20:25:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 20:25:33,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 20:25:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-28 20:25:33,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-28 20:25:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:25:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:25:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:25:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:25:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 20:25:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 20:25:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:25:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:25:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:25:33,486 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:25:33,657 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:25:33,661 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:25:34,279 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:25:34,672 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:25:34,672 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-28 20:25:34,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:25:34 BoogieIcfgContainer [2023-11-28 20:25:34,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:25:34,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:25:34,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:25:34,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:25:34,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:25:32" (1/3) ... [2023-11-28 20:25:34,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216edc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:25:34, skipping insertion in model container [2023-11-28 20:25:34,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:33" (2/3) ... [2023-11-28 20:25:34,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216edc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:25:34, skipping insertion in model container [2023-11-28 20:25:34,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:25:34" (3/3) ... [2023-11-28 20:25:34,683 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-11-28 20:25:34,694 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 20:25:34,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:25:34,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-28 20:25:34,703 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:25:34,794 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-28 20:25:34,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 130 transitions, 281 flow [2023-11-28 20:25:34,888 INFO L124 PetriNetUnfolderBase]: 15/127 cut-off events. [2023-11-28 20:25:34,888 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-28 20:25:34,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 15/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 495 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-28 20:25:34,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 130 transitions, 281 flow [2023-11-28 20:25:34,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 125 transitions, 265 flow [2023-11-28 20:25:34,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:25:34,918 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;@29418ab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:25:34,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-28 20:25:34,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:25:34,922 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-28 20:25:34,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:25:34,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:34,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-28 20:25:34,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:25:34,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash 987280, now seen corresponding path program 1 times [2023-11-28 20:25:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:34,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213880131] [2023-11-28 20:25:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:35,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213880131] [2023-11-28 20:25:35,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213880131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:35,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:35,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831798028] [2023-11-28 20:25:35,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:35,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-28 20:25:35,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 125 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:35,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:35,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-28 20:25:35,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:38,099 INFO L124 PetriNetUnfolderBase]: 10537/19882 cut-off events. [2023-11-28 20:25:38,100 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-11-28 20:25:38,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34165 conditions, 19882 events. 10537/19882 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 177746 event pairs, 7051 based on Foata normal form. 3/15544 useless extension candidates. Maximal degree in co-relation 31910. Up to 13895 conditions per place. [2023-11-28 20:25:38,358 INFO L140 encePairwiseOnDemand]: 114/130 looper letters, 64 selfloop transitions, 10 changer transitions 0/134 dead transitions. [2023-11-28 20:25:38,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 134 transitions, 431 flow [2023-11-28 20:25:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:25:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:25:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-11-28 20:25:38,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2023-11-28 20:25:38,380 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-11-28 20:25:38,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-11-28 20:25:38,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:38,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-11-28 20:25:38,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,400 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,402 INFO L175 Difference]: Start difference. First operand has 120 places, 125 transitions, 265 flow. Second operand 4 states and 332 transitions. [2023-11-28 20:25:38,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 134 transitions, 431 flow [2023-11-28 20:25:38,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 134 transitions, 422 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 20:25:38,452 INFO L231 Difference]: Finished difference. Result has 121 places, 134 transitions, 344 flow [2023-11-28 20:25:38,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=121, PETRI_TRANSITIONS=134} [2023-11-28 20:25:38,459 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2023-11-28 20:25:38,459 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 134 transitions, 344 flow [2023-11-28 20:25:38,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:38,462 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-28 20:25:38,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:25:38,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:25:38,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash -651723390, now seen corresponding path program 1 times [2023-11-28 20:25:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:38,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396906183] [2023-11-28 20:25:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:38,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:38,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396906183] [2023-11-28 20:25:38,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396906183] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:38,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772759100] [2023-11-28 20:25:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:38,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:38,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:38,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:25:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:38,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:38,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:38,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:38,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772759100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:38,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 20:25:38,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157546461] [2023-11-28 20:25:38,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:38,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:38,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:38,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:25:38,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-28 20:25:38,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 134 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:38,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:38,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-28 20:25:38,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:41,331 INFO L124 PetriNetUnfolderBase]: 10537/19879 cut-off events. [2023-11-28 20:25:41,331 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-28 20:25:41,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34054 conditions, 19879 events. 10537/19879 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 177767 event pairs, 7051 based on Foata normal form. 3/15546 useless extension candidates. Maximal degree in co-relation 33981. Up to 13880 conditions per place. [2023-11-28 20:25:41,450 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 54 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2023-11-28 20:25:41,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 131 transitions, 474 flow [2023-11-28 20:25:41,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:25:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:25:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2023-11-28 20:25:41,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794871794871795 [2023-11-28 20:25:41,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 452 transitions. [2023-11-28 20:25:41,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 452 transitions. [2023-11-28 20:25:41,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:41,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 452 transitions. [2023-11-28 20:25:41,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.33333333333333) internal successors, (452), 6 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:41,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:41,462 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:41,462 INFO L175 Difference]: Start difference. First operand has 121 places, 134 transitions, 344 flow. Second operand 6 states and 452 transitions. [2023-11-28 20:25:41,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 131 transitions, 474 flow [2023-11-28 20:25:41,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 131 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:25:41,467 INFO L231 Difference]: Finished difference. Result has 123 places, 131 transitions, 366 flow [2023-11-28 20:25:41,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=123, PETRI_TRANSITIONS=131} [2023-11-28 20:25:41,469 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2023-11-28 20:25:41,469 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 131 transitions, 366 flow [2023-11-28 20:25:41,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:41,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:41,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-28 20:25:41,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:41,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-28 20:25:41,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:25:41,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1271412387, now seen corresponding path program 1 times [2023-11-28 20:25:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:41,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394772327] [2023-11-28 20:25:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:41,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:41,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394772327] [2023-11-28 20:25:41,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394772327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:41,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077944635] [2023-11-28 20:25:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:41,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:41,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:41,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:41,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:25:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:41,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:41,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:41,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077944635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:41,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:25:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-28 20:25:41,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389632225] [2023-11-28 20:25:41,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:25:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:41,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:25:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:25:41,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2023-11-28 20:25:41,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 366 flow. Second operand has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:41,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:41,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2023-11-28 20:25:41,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:43,557 INFO L124 PetriNetUnfolderBase]: 10546/19915 cut-off events. [2023-11-28 20:25:43,557 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-28 20:25:43,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34195 conditions, 19915 events. 10546/19915 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 178075 event pairs, 7051 based on Foata normal form. 9/15588 useless extension candidates. Maximal degree in co-relation 33983. Up to 13895 conditions per place. [2023-11-28 20:25:43,708 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 61 selfloop transitions, 37 changer transitions 0/158 dead transitions. [2023-11-28 20:25:43,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 158 transitions, 736 flow [2023-11-28 20:25:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:25:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 20:25:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 737 transitions. [2023-11-28 20:25:43,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566923076923077 [2023-11-28 20:25:43,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 737 transitions. [2023-11-28 20:25:43,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 737 transitions. [2023-11-28 20:25:43,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:43,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 737 transitions. [2023-11-28 20:25:43,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:43,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:43,722 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:43,723 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 366 flow. Second operand 10 states and 737 transitions. [2023-11-28 20:25:43,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 158 transitions, 736 flow [2023-11-28 20:25:43,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 158 transitions, 653 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-28 20:25:43,731 INFO L231 Difference]: Finished difference. Result has 130 places, 158 transitions, 581 flow [2023-11-28 20:25:43,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=581, PETRI_PLACES=130, PETRI_TRANSITIONS=158} [2023-11-28 20:25:43,732 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 10 predicate places. [2023-11-28 20:25:43,733 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 158 transitions, 581 flow [2023-11-28 20:25:43,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:43,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:43,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:43,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:25:43,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-28 20:25:43,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:25:43,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:43,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1303539307, now seen corresponding path program 1 times [2023-11-28 20:25:43,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:43,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916564447] [2023-11-28 20:25:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:43,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:44,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:44,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916564447] [2023-11-28 20:25:44,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916564447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:44,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:44,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:44,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28402142] [2023-11-28 20:25:44,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:44,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:44,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:44,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-28 20:25:44,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 158 transitions, 581 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:44,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:44,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-28 20:25:44,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:47,542 INFO L124 PetriNetUnfolderBase]: 22823/43073 cut-off events. [2023-11-28 20:25:47,543 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2023-11-28 20:25:47,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73824 conditions, 43073 events. 22823/43073 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 2024. Compared 426122 event pairs, 15226 based on Foata normal form. 250/33793 useless extension candidates. Maximal degree in co-relation 73697. Up to 15139 conditions per place. [2023-11-28 20:25:47,809 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 153 selfloop transitions, 9 changer transitions 0/223 dead transitions. [2023-11-28 20:25:47,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 223 transitions, 1114 flow [2023-11-28 20:25:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:25:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2023-11-28 20:25:47,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696923076923077 [2023-11-28 20:25:47,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2023-11-28 20:25:47,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2023-11-28 20:25:47,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:47,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2023-11-28 20:25:47,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:47,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:47,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:47,818 INFO L175 Difference]: Start difference. First operand has 130 places, 158 transitions, 581 flow. Second operand 5 states and 453 transitions. [2023-11-28 20:25:47,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 223 transitions, 1114 flow [2023-11-28 20:25:47,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 223 transitions, 1067 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-28 20:25:47,827 INFO L231 Difference]: Finished difference. Result has 134 places, 159 transitions, 578 flow [2023-11-28 20:25:47,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=134, PETRI_TRANSITIONS=159} [2023-11-28 20:25:47,828 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 14 predicate places. [2023-11-28 20:25:47,828 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 159 transitions, 578 flow [2023-11-28 20:25:47,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:47,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:47,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:47,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:25:47,829 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:25:47,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:47,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1755013953, now seen corresponding path program 1 times [2023-11-28 20:25:47,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:47,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45454527] [2023-11-28 20:25:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:47,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:47,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45454527] [2023-11-28 20:25:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45454527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:47,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:47,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:47,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31821739] [2023-11-28 20:25:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:47,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:47,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:47,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:47,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-28 20:25:47,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 159 transitions, 578 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:47,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:47,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-28 20:25:47,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:25:54,045 INFO L124 PetriNetUnfolderBase]: 44148/83072 cut-off events. [2023-11-28 20:25:54,045 INFO L125 PetriNetUnfolderBase]: For 3103/3103 co-relation queries the response was YES. [2023-11-28 20:25:54,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143696 conditions, 83072 events. 44148/83072 cut-off events. For 3103/3103 co-relation queries the response was YES. Maximal size of possible extension queue 3856. Compared 890737 event pairs, 29328 based on Foata normal form. 498/66077 useless extension candidates. Maximal degree in co-relation 143485. Up to 29059 conditions per place. [2023-11-28 20:25:54,570 INFO L140 encePairwiseOnDemand]: 121/130 looper letters, 169 selfloop transitions, 12 changer transitions 0/242 dead transitions. [2023-11-28 20:25:54,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 242 transitions, 1260 flow [2023-11-28 20:25:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:25:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:25:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2023-11-28 20:25:54,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.654945054945055 [2023-11-28 20:25:54,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2023-11-28 20:25:54,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2023-11-28 20:25:54,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:25:54,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2023-11-28 20:25:54,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:54,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 130.0) internal successors, (1040), 8 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:54,578 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 130.0) internal successors, (1040), 8 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:54,578 INFO L175 Difference]: Start difference. First operand has 134 places, 159 transitions, 578 flow. Second operand 7 states and 596 transitions. [2023-11-28 20:25:54,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 242 transitions, 1260 flow [2023-11-28 20:25:54,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 242 transitions, 1255 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-28 20:25:54,588 INFO L231 Difference]: Finished difference. Result has 144 places, 168 transitions, 697 flow [2023-11-28 20:25:54,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=697, PETRI_PLACES=144, PETRI_TRANSITIONS=168} [2023-11-28 20:25:54,589 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 24 predicate places. [2023-11-28 20:25:54,589 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 168 transitions, 697 flow [2023-11-28 20:25:54,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:54,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:25:54,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:54,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:25:54,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:25:54,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1432623932, now seen corresponding path program 1 times [2023-11-28 20:25:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:54,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563273470] [2023-11-28 20:25:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:54,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:54,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:54,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563273470] [2023-11-28 20:25:54,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563273470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:54,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:54,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435879787] [2023-11-28 20:25:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:54,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:54,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-28 20:25:54,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 168 transitions, 697 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:54,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:25:54,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-28 20:25:54,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:09,002 INFO L124 PetriNetUnfolderBase]: 92096/172444 cut-off events. [2023-11-28 20:26:09,002 INFO L125 PetriNetUnfolderBase]: For 1147/1147 co-relation queries the response was YES. [2023-11-28 20:26:09,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296066 conditions, 172444 events. 92096/172444 cut-off events. For 1147/1147 co-relation queries the response was YES. Maximal size of possible extension queue 7579. Compared 2001888 event pairs, 61512 based on Foata normal form. 1144/135452 useless extension candidates. Maximal degree in co-relation 295848. Up to 61136 conditions per place. [2023-11-28 20:26:10,243 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 135 selfloop transitions, 20 changer transitions 0/218 dead transitions. [2023-11-28 20:26:10,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 218 transitions, 1113 flow [2023-11-28 20:26:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:26:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:26:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-11-28 20:26:10,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2023-11-28 20:26:10,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-11-28 20:26:10,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-11-28 20:26:10,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:10,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-11-28 20:26:10,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:10,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:10,249 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:10,250 INFO L175 Difference]: Start difference. First operand has 144 places, 168 transitions, 697 flow. Second operand 5 states and 450 transitions. [2023-11-28 20:26:10,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 218 transitions, 1113 flow [2023-11-28 20:26:10,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 218 transitions, 1111 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-28 20:26:10,256 INFO L231 Difference]: Finished difference. Result has 150 places, 169 transitions, 752 flow [2023-11-28 20:26:10,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=752, PETRI_PLACES=150, PETRI_TRANSITIONS=169} [2023-11-28 20:26:10,257 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 30 predicate places. [2023-11-28 20:26:10,257 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 169 transitions, 752 flow [2023-11-28 20:26:10,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:10,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:10,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:10,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:26:10,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:26:10,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1461667800, now seen corresponding path program 1 times [2023-11-28 20:26:10,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:10,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339248077] [2023-11-28 20:26:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:10,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:10,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:10,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339248077] [2023-11-28 20:26:10,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339248077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:10,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:10,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:26:10,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950987985] [2023-11-28 20:26:10,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:10,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:26:10,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:10,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:26:10,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:26:10,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-28 20:26:10,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 169 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:10,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:10,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-28 20:26:10,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:25,744 INFO L124 PetriNetUnfolderBase]: 89871/168649 cut-off events. [2023-11-28 20:26:25,744 INFO L125 PetriNetUnfolderBase]: For 6916/6916 co-relation queries the response was YES. [2023-11-28 20:26:26,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292352 conditions, 168649 events. 89871/168649 cut-off events. For 6916/6916 co-relation queries the response was YES. Maximal size of possible extension queue 7485. Compared 1958570 event pairs, 59682 based on Foata normal form. 1124/134525 useless extension candidates. Maximal degree in co-relation 292128. Up to 60026 conditions per place. [2023-11-28 20:26:27,256 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 155 selfloop transitions, 16 changer transitions 0/234 dead transitions. [2023-11-28 20:26:27,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 234 transitions, 1305 flow [2023-11-28 20:26:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:26:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:26:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2023-11-28 20:26:27,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696923076923077 [2023-11-28 20:26:27,260 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2023-11-28 20:26:27,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2023-11-28 20:26:27,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:27,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2023-11-28 20:26:27,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:27,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:27,266 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:27,266 INFO L175 Difference]: Start difference. First operand has 150 places, 169 transitions, 752 flow. Second operand 5 states and 453 transitions. [2023-11-28 20:26:27,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 234 transitions, 1305 flow [2023-11-28 20:26:27,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 234 transitions, 1268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:26:27,292 INFO L231 Difference]: Finished difference. Result has 155 places, 175 transitions, 821 flow [2023-11-28 20:26:27,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=821, PETRI_PLACES=155, PETRI_TRANSITIONS=175} [2023-11-28 20:26:27,293 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 35 predicate places. [2023-11-28 20:26:27,293 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 175 transitions, 821 flow [2023-11-28 20:26:27,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:27,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:27,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:27,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:26:27,294 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:26:27,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 671295073, now seen corresponding path program 1 times [2023-11-28 20:26:27,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:27,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999001496] [2023-11-28 20:26:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:27,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999001496] [2023-11-28 20:26:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999001496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590764904] [2023-11-28 20:26:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:27,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:27,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:27,486 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:27,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:26:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:27,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:26:27,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:26:27,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:27,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590764904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:27,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:27,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-28 20:26:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653079487] [2023-11-28 20:26:27,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:27,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:26:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:26:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:26:27,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 130 [2023-11-28 20:26:27,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 175 transitions, 821 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:27,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:27,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 130 [2023-11-28 20:26:27,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:40,629 INFO L124 PetriNetUnfolderBase]: 84282/158920 cut-off events. [2023-11-28 20:26:40,629 INFO L125 PetriNetUnfolderBase]: For 5686/6180 co-relation queries the response was YES. [2023-11-28 20:26:41,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272386 conditions, 158920 events. 84282/158920 cut-off events. For 5686/6180 co-relation queries the response was YES. Maximal size of possible extension queue 7045. Compared 1841601 event pairs, 56408 based on Foata normal form. 1000/125296 useless extension candidates. Maximal degree in co-relation 272155. Up to 111122 conditions per place. [2023-11-28 20:26:41,821 INFO L140 encePairwiseOnDemand]: 128/130 looper letters, 107 selfloop transitions, 1 changer transitions 0/173 dead transitions. [2023-11-28 20:26:41,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 173 transitions, 1023 flow [2023-11-28 20:26:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:26:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:26:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-11-28 20:26:41,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2023-11-28 20:26:41,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-11-28 20:26:41,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-11-28 20:26:41,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:41,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-11-28 20:26:41,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:41,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:41,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:41,825 INFO L175 Difference]: Start difference. First operand has 155 places, 175 transitions, 821 flow. Second operand 3 states and 264 transitions. [2023-11-28 20:26:41,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 173 transitions, 1023 flow [2023-11-28 20:26:41,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 173 transitions, 1007 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:26:41,831 INFO L231 Difference]: Finished difference. Result has 152 places, 173 transitions, 793 flow [2023-11-28 20:26:41,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=793, PETRI_PLACES=152, PETRI_TRANSITIONS=173} [2023-11-28 20:26:41,831 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 32 predicate places. [2023-11-28 20:26:41,832 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 173 transitions, 793 flow [2023-11-28 20:26:41,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:41,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:41,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:41,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:26:42,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:42,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:26:42,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1725644175, now seen corresponding path program 1 times [2023-11-28 20:26:42,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:42,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612829901] [2023-11-28 20:26:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:42,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:42,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612829901] [2023-11-28 20:26:42,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612829901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:42,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045842823] [2023-11-28 20:26:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:42,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:42,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:42,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:42,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:26:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:42,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:26:42,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:26:42,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:42,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045842823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:42,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:42,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-28 20:26:42,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690309954] [2023-11-28 20:26:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:42,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:26:42,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:42,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:26:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:26:42,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 130 [2023-11-28 20:26:42,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 173 transitions, 793 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:42,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:42,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 130 [2023-11-28 20:26:42,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:26:55,243 INFO L124 PetriNetUnfolderBase]: 84282/158916 cut-off events. [2023-11-28 20:26:55,243 INFO L125 PetriNetUnfolderBase]: For 4168/4168 co-relation queries the response was YES. [2023-11-28 20:26:55,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272365 conditions, 158916 events. 84282/158916 cut-off events. For 4168/4168 co-relation queries the response was YES. Maximal size of possible extension queue 7045. Compared 1841560 event pairs, 56408 based on Foata normal form. 996/125288 useless extension candidates. Maximal degree in co-relation 272341. Up to 111111 conditions per place. [2023-11-28 20:26:56,486 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 102 selfloop transitions, 6 changer transitions 0/171 dead transitions. [2023-11-28 20:26:56,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 171 transitions, 996 flow [2023-11-28 20:26:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:26:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:26:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-11-28 20:26:56,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2023-11-28 20:26:56,489 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-11-28 20:26:56,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-11-28 20:26:56,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:26:56,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-11-28 20:26:56,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,491 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,491 INFO L175 Difference]: Start difference. First operand has 152 places, 173 transitions, 793 flow. Second operand 4 states and 332 transitions. [2023-11-28 20:26:56,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 171 transitions, 996 flow [2023-11-28 20:26:56,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 171 transitions, 973 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:26:56,497 INFO L231 Difference]: Finished difference. Result has 150 places, 171 transitions, 769 flow [2023-11-28 20:26:56,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=769, PETRI_PLACES=150, PETRI_TRANSITIONS=171} [2023-11-28 20:26:56,498 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 30 predicate places. [2023-11-28 20:26:56,498 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 171 transitions, 769 flow [2023-11-28 20:26:56,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:26:56,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:56,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:26:56,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf938ce-28ef-4faf-989e-655791086e72/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:56,699 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:26:56,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash 984873009, now seen corresponding path program 1 times [2023-11-28 20:26:56,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:56,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303272058] [2023-11-28 20:26:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:56,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:26:56,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:56,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303272058] [2023-11-28 20:26:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303272058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:56,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:56,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:26:56,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127851395] [2023-11-28 20:26:56,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:56,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:26:56,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:56,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:26:56,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:26:56,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-28 20:26:56,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 171 transitions, 769 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:26:56,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:26:56,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-28 20:26:56,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:27:22,546 INFO L124 PetriNetUnfolderBase]: 167544/314988 cut-off events. [2023-11-28 20:27:22,546 INFO L125 PetriNetUnfolderBase]: For 1650/1650 co-relation queries the response was YES. [2023-11-28 20:27:24,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540445 conditions, 314988 events. 167544/314988 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 12987. Compared 3915619 event pairs, 85896 based on Foata normal form. 2512/247844 useless extension candidates. Maximal degree in co-relation 540423. Up to 118531 conditions per place. [2023-11-28 20:27:25,552 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 184 selfloop transitions, 3 changer transitions 0/248 dead transitions. [2023-11-28 20:27:25,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 248 transitions, 1305 flow [2023-11-28 20:27:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:27:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:27:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2023-11-28 20:27:25,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7846153846153846 [2023-11-28 20:27:25,555 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 408 transitions. [2023-11-28 20:27:25,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 408 transitions. [2023-11-28 20:27:25,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:27:25,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 408 transitions. [2023-11-28 20:27:25,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:25,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:25,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:25,559 INFO L175 Difference]: Start difference. First operand has 150 places, 171 transitions, 769 flow. Second operand 4 states and 408 transitions. [2023-11-28 20:27:25,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 248 transitions, 1305 flow [2023-11-28 20:27:25,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 248 transitions, 1298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:27:25,569 INFO L231 Difference]: Finished difference. Result has 153 places, 173 transitions, 784 flow [2023-11-28 20:27:25,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=784, PETRI_PLACES=153, PETRI_TRANSITIONS=173} [2023-11-28 20:27:25,571 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 33 predicate places. [2023-11-28 20:27:25,571 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 173 transitions, 784 flow [2023-11-28 20:27:25,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:25,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:27:25,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:25,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:27:25,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-28 20:27:25,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:25,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1928266182, now seen corresponding path program 1 times [2023-11-28 20:27:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:25,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485300109] [2023-11-28 20:27:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:25,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:27:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:27:25,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485300109] [2023-11-28 20:27:25,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485300109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:27:25,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:27:25,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:27:25,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612444123] [2023-11-28 20:27:25,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:27:25,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:27:25,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:27:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:27:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:27:25,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2023-11-28 20:27:25,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 173 transitions, 784 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:27:25,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:27:25,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2023-11-28 20:27:25,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand