./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ --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 f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:38:35,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:38:35,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 21:38:35,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:38:35,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:38:35,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:38:35,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:38:35,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:38:35,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:38:35,265 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:38:35,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:38:35,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:38:35,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:38:35,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:38:35,270 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:38:35,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:38:35,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:38:35,271 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:38:35,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:38:35,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:38:35,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:38:35,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:38:35,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:38:35,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:38:35,274 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:38:35,275 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:38:35,275 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:38:35,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:38:35,276 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:38:35,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:38:35,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:38:35,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:38:35,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:38:35,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:38:35,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:38:35,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:38:35,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:38:35,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:38:35,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:38:35,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:38:35,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:38:35,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:38:35,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:38:35,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:38:35,283 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_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2023-11-23 21:38:35,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:38:35,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:38:35,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:38:35,588 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:38:35,589 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:38:35,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/clever.wvr.c [2023-11-23 21:38:38,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:38:38,923 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:38:38,924 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/sv-benchmarks/c/weaver/clever.wvr.c [2023-11-23 21:38:38,937 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/data/770b771fe/d9795d039b9b4872942fb888aaed9cb7/FLAGe8bcdac9f [2023-11-23 21:38:38,955 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/data/770b771fe/d9795d039b9b4872942fb888aaed9cb7 [2023-11-23 21:38:38,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:38:38,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:38:38,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:38:38,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:38:38,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:38:38,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:38:38" (1/1) ... [2023-11-23 21:38:38,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341c3dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:38, skipping insertion in model container [2023-11-23 21:38:38,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:38:38" (1/1) ... [2023-11-23 21:38:38,996 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:38:39,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:38:39,244 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:38:39,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:38:39,285 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:38:39,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39 WrapperNode [2023-11-23 21:38:39,286 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:38:39,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:38:39,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:38:39,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:38:39,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,330 INFO L138 Inliner]: procedures = 19, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86 [2023-11-23 21:38:39,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:38:39,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:38:39,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:38:39,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:38:39,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,344 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,357 INFO L189 HeapSplitter]: Split 6 memory accesses to 3 slices as follows [2, 2, 2] [2023-11-23 21:38:39,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:38:39,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:38:39,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:38:39,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:38:39,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (1/1) ... [2023-11-23 21:38:39,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:38:39,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:38:39,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:38:39,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:38:39,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:38:39,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:38:39,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:38:39,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:38:39,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:38:39,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:38:39,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:38:39,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:38:39,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:38:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:38:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:38:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:38:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:38:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:38:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:38:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:38:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:38:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:38:39,481 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:38:39,672 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:38:39,675 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:38:39,968 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:38:40,356 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:38:40,357 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:38:40,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:38:40 BoogieIcfgContainer [2023-11-23 21:38:40,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:38:40,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:38:40,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:38:40,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:38:40,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:38:38" (1/3) ... [2023-11-23 21:38:40,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749a6cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:38:40, skipping insertion in model container [2023-11-23 21:38:40,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:39" (2/3) ... [2023-11-23 21:38:40,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749a6cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:38:40, skipping insertion in model container [2023-11-23 21:38:40,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:38:40" (3/3) ... [2023-11-23 21:38:40,370 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-11-23 21:38:40,380 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:38:40,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:38:40,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:38:40,393 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:38:40,456 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:38:40,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 76 flow [2023-11-23 21:38:40,534 INFO L124 PetriNetUnfolderBase]: 3/29 cut-off events. [2023-11-23 21:38:40,534 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 21:38:40,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 3/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 67 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-23 21:38:40,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 76 flow [2023-11-23 21:38:40,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 63 flow [2023-11-23 21:38:40,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:38:40,581 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;@4c33dc93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:38:40,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-23 21:38:40,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:38:40,590 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-23 21:38:40,590 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 21:38:40,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:40,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:38:40,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:40,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1640462686, now seen corresponding path program 1 times [2023-11-23 21:38:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363759469] [2023-11-23 21:38:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:40,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:41,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363759469] [2023-11-23 21:38:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363759469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:38:41,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:38:41,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:38:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362729659] [2023-11-23 21:38:41,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:38:41,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:38:41,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:41,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:38:41,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:38:41,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:41,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:41,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:41,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:41,374 INFO L124 PetriNetUnfolderBase]: 247/472 cut-off events. [2023-11-23 21:38:41,380 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-23 21:38:41,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 472 events. 247/472 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2357 event pairs, 88 based on Foata normal form. 10/345 useless extension candidates. Maximal degree in co-relation 812. Up to 225 conditions per place. [2023-11-23 21:38:41,391 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 35 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-23 21:38:41,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 188 flow [2023-11-23 21:38:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:38:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:38:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-23 21:38:41,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2023-11-23 21:38:41,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-23 21:38:41,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-23 21:38:41,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:41,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-23 21:38:41,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,415 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,417 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 63 flow. Second operand 4 states and 84 transitions. [2023-11-23 21:38:41,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 188 flow [2023-11-23 21:38:41,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 179 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:38:41,424 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 86 flow [2023-11-23 21:38:41,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-11-23 21:38:41,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-11-23 21:38:41,430 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 86 flow [2023-11-23 21:38:41,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:41,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:38:41,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:38:41,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:41,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:41,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1640462719, now seen corresponding path program 1 times [2023-11-23 21:38:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:41,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117086328] [2023-11-23 21:38:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:41,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:41,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:41,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117086328] [2023-11-23 21:38:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117086328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:38:41,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:38:41,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:38:41,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140225007] [2023-11-23 21:38:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:38:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:38:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:38:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:38:41,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:41,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:41,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:41,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:41,732 INFO L124 PetriNetUnfolderBase]: 247/451 cut-off events. [2023-11-23 21:38:41,733 INFO L125 PetriNetUnfolderBase]: For 122/126 co-relation queries the response was YES. [2023-11-23 21:38:41,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 451 events. 247/451 cut-off events. For 122/126 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2142 event pairs, 104 based on Foata normal form. 20/383 useless extension candidates. Maximal degree in co-relation 680. Up to 287 conditions per place. [2023-11-23 21:38:41,744 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-11-23 21:38:41,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 150 flow [2023-11-23 21:38:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:38:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:38:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2023-11-23 21:38:41,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2023-11-23 21:38:41,750 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 68 transitions. [2023-11-23 21:38:41,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 68 transitions. [2023-11-23 21:38:41,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:41,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 68 transitions. [2023-11-23 21:38:41,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,758 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,759 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 86 flow. Second operand 4 states and 68 transitions. [2023-11-23 21:38:41,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 150 flow [2023-11-23 21:38:41,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 150 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:38:41,771 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 90 flow [2023-11-23 21:38:41,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-11-23 21:38:41,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-11-23 21:38:41,775 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 90 flow [2023-11-23 21:38:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:41,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:38:41,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:38:41,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:41,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash -685262903, now seen corresponding path program 1 times [2023-11-23 21:38:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:41,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35536886] [2023-11-23 21:38:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:41,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:41,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35536886] [2023-11-23 21:38:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35536886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:38:41,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:38:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:38:41,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967159294] [2023-11-23 21:38:41,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:38:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:38:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:41,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:38:41,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:38:41,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:41,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:41,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:41,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:41,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:42,131 INFO L124 PetriNetUnfolderBase]: 381/724 cut-off events. [2023-11-23 21:38:42,132 INFO L125 PetriNetUnfolderBase]: For 210/214 co-relation queries the response was YES. [2023-11-23 21:38:42,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 724 events. 381/724 cut-off events. For 210/214 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3772 event pairs, 63 based on Foata normal form. 20/644 useless extension candidates. Maximal degree in co-relation 1215. Up to 389 conditions per place. [2023-11-23 21:38:42,140 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 39 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-11-23 21:38:42,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 243 flow [2023-11-23 21:38:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:38:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:38:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2023-11-23 21:38:42,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2023-11-23 21:38:42,143 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 82 transitions. [2023-11-23 21:38:42,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 82 transitions. [2023-11-23 21:38:42,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:42,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 82 transitions. [2023-11-23 21:38:42,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,147 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 90 flow. Second operand 4 states and 82 transitions. [2023-11-23 21:38:42,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 243 flow [2023-11-23 21:38:42,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:38:42,152 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 104 flow [2023-11-23 21:38:42,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-23 21:38:42,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-11-23 21:38:42,155 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 104 flow [2023-11-23 21:38:42,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:42,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:38:42,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:38:42,156 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:42,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash -700358100, now seen corresponding path program 1 times [2023-11-23 21:38:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:42,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583482652] [2023-11-23 21:38:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:42,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:42,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:42,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583482652] [2023-11-23 21:38:42,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583482652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:38:42,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:38:42,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:38:42,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170810010] [2023-11-23 21:38:42,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:38:42,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:38:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:38:42,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:38:42,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:42,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:42,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:42,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:42,438 INFO L124 PetriNetUnfolderBase]: 417/807 cut-off events. [2023-11-23 21:38:42,438 INFO L125 PetriNetUnfolderBase]: For 351/367 co-relation queries the response was YES. [2023-11-23 21:38:42,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 807 events. 417/807 cut-off events. For 351/367 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4239 event pairs, 160 based on Foata normal form. 42/718 useless extension candidates. Maximal degree in co-relation 1433. Up to 402 conditions per place. [2023-11-23 21:38:42,447 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-11-23 21:38:42,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 232 flow [2023-11-23 21:38:42,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:38:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:38:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2023-11-23 21:38:42,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725806451612904 [2023-11-23 21:38:42,453 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 71 transitions. [2023-11-23 21:38:42,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 71 transitions. [2023-11-23 21:38:42,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:42,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 71 transitions. [2023-11-23 21:38:42,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,457 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,457 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 104 flow. Second operand 4 states and 71 transitions. [2023-11-23 21:38:42,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 232 flow [2023-11-23 21:38:42,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:38:42,460 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 106 flow [2023-11-23 21:38:42,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-11-23 21:38:42,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-11-23 21:38:42,462 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 106 flow [2023-11-23 21:38:42,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:42,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:38:42,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:38:42,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:42,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash -236264253, now seen corresponding path program 1 times [2023-11-23 21:38:42,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:42,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492612010] [2023-11-23 21:38:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:42,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492612010] [2023-11-23 21:38:42,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492612010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:38:42,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:38:42,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:38:42,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281082565] [2023-11-23 21:38:42,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:38:42,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:38:42,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:42,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:38:42,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:38:42,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:42,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:42,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:42,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:42,775 INFO L124 PetriNetUnfolderBase]: 521/1018 cut-off events. [2023-11-23 21:38:42,775 INFO L125 PetriNetUnfolderBase]: For 642/694 co-relation queries the response was YES. [2023-11-23 21:38:42,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2553 conditions, 1018 events. 521/1018 cut-off events. For 642/694 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5623 event pairs, 109 based on Foata normal form. 42/1050 useless extension candidates. Maximal degree in co-relation 1985. Up to 483 conditions per place. [2023-11-23 21:38:42,786 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 50 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-11-23 21:38:42,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 336 flow [2023-11-23 21:38:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:38:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:38:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2023-11-23 21:38:42,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6693548387096774 [2023-11-23 21:38:42,789 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 83 transitions. [2023-11-23 21:38:42,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 83 transitions. [2023-11-23 21:38:42,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:42,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 83 transitions. [2023-11-23 21:38:42,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,792 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,792 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 106 flow. Second operand 4 states and 83 transitions. [2023-11-23 21:38:42,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 336 flow [2023-11-23 21:38:42,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:38:42,797 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 120 flow [2023-11-23 21:38:42,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-11-23 21:38:42,800 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-11-23 21:38:42,801 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 120 flow [2023-11-23 21:38:42,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:42,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:42,801 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:38:42,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:38:42,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:42,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1408627285, now seen corresponding path program 1 times [2023-11-23 21:38:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923256728] [2023-11-23 21:38:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:42,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:42,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923256728] [2023-11-23 21:38:42,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923256728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:38:42,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803996549] [2023-11-23 21:38:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:42,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:38:42,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:38:42,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:38:42,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:38:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:42,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:38:42,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:38:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:43,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:38:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803996549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:38:43,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:38:43,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 21:38:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208950646] [2023-11-23 21:38:43,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:38:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:38:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:38:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:38:43,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:43,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:43,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:43,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:43,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:43,349 INFO L124 PetriNetUnfolderBase]: 493/967 cut-off events. [2023-11-23 21:38:43,349 INFO L125 PetriNetUnfolderBase]: For 542/580 co-relation queries the response was YES. [2023-11-23 21:38:43,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 967 events. 493/967 cut-off events. For 542/580 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5456 event pairs, 33 based on Foata normal form. 28/965 useless extension candidates. Maximal degree in co-relation 2109. Up to 270 conditions per place. [2023-11-23 21:38:43,361 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 61 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-11-23 21:38:43,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 404 flow [2023-11-23 21:38:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:38:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:38:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2023-11-23 21:38:43,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2023-11-23 21:38:43,364 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 120 transitions. [2023-11-23 21:38:43,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 120 transitions. [2023-11-23 21:38:43,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:43,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 120 transitions. [2023-11-23 21:38:43,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:43,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:43,367 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:43,368 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 120 flow. Second operand 6 states and 120 transitions. [2023-11-23 21:38:43,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 404 flow [2023-11-23 21:38:43,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:38:43,371 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 132 flow [2023-11-23 21:38:43,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-11-23 21:38:43,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2023-11-23 21:38:43,373 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 132 flow [2023-11-23 21:38:43,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:43,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:43,374 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:38:43,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:38:43,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 21:38:43,594 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:43,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash -717772517, now seen corresponding path program 1 times [2023-11-23 21:38:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:43,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265794329] [2023-11-23 21:38:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:43,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:43,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265794329] [2023-11-23 21:38:43,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265794329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:38:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562243816] [2023-11-23 21:38:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:43,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:38:43,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:38:43,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:38:43,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:38:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:43,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:38:43,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:38:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:43,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:38:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562243816] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:38:43,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:38:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-23 21:38:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563451358] [2023-11-23 21:38:43,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:38:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:38:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:38:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:38:43,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:43,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 132 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:43,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:43,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:43,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:44,437 INFO L124 PetriNetUnfolderBase]: 1093/2161 cut-off events. [2023-11-23 21:38:44,437 INFO L125 PetriNetUnfolderBase]: For 1835/1915 co-relation queries the response was YES. [2023-11-23 21:38:44,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 2161 events. 1093/2161 cut-off events. For 1835/1915 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13465 event pairs, 223 based on Foata normal form. 84/2241 useless extension candidates. Maximal degree in co-relation 3883. Up to 487 conditions per place. [2023-11-23 21:38:44,459 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 113 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2023-11-23 21:38:44,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 133 transitions, 768 flow [2023-11-23 21:38:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:38:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 21:38:44,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2023-11-23 21:38:44,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2023-11-23 21:38:44,462 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 210 transitions. [2023-11-23 21:38:44,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 210 transitions. [2023-11-23 21:38:44,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:44,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 210 transitions. [2023-11-23 21:38:44,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:44,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:44,465 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:44,466 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 132 flow. Second operand 10 states and 210 transitions. [2023-11-23 21:38:44,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 133 transitions, 768 flow [2023-11-23 21:38:44,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 133 transitions, 740 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-23 21:38:44,472 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 206 flow [2023-11-23 21:38:44,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=206, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-23 21:38:44,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2023-11-23 21:38:44,473 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 206 flow [2023-11-23 21:38:44,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:44,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:44,474 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 21:38:44,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 21:38:44,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:38:44,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:44,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash 170436272, now seen corresponding path program 1 times [2023-11-23 21:38:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959745645] [2023-11-23 21:38:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959745645] [2023-11-23 21:38:44,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959745645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:38:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163042987] [2023-11-23 21:38:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:44,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:38:44,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:38:44,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:38:44,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:38:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:44,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:38:44,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:38:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:38:44,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:38:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:38:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163042987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:38:44,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:38:44,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-11-23 21:38:44,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682948594] [2023-11-23 21:38:44,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:38:44,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:38:44,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:38:44,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:38:44,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:44,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 206 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:44,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:44,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:44,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:45,635 INFO L124 PetriNetUnfolderBase]: 1943/3705 cut-off events. [2023-11-23 21:38:45,635 INFO L125 PetriNetUnfolderBase]: For 3385/3547 co-relation queries the response was YES. [2023-11-23 21:38:45,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10456 conditions, 3705 events. 1943/3705 cut-off events. For 3385/3547 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 24344 event pairs, 213 based on Foata normal form. 0/3695 useless extension candidates. Maximal degree in co-relation 8938. Up to 940 conditions per place. [2023-11-23 21:38:45,670 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 110 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2023-11-23 21:38:45,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 861 flow [2023-11-23 21:38:45,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:38:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 21:38:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2023-11-23 21:38:45,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6200716845878136 [2023-11-23 21:38:45,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 173 transitions. [2023-11-23 21:38:45,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 173 transitions. [2023-11-23 21:38:45,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:45,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 173 transitions. [2023-11-23 21:38:45,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:45,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:45,676 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:45,676 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 206 flow. Second operand 9 states and 173 transitions. [2023-11-23 21:38:45,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 861 flow [2023-11-23 21:38:45,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 129 transitions, 821 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-23 21:38:45,691 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 264 flow [2023-11-23 21:38:45,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-11-23 21:38:45,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2023-11-23 21:38:45,694 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 264 flow [2023-11-23 21:38:45,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:45,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:45,695 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:38:45,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:38:45,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:38:45,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:45,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash 903396585, now seen corresponding path program 1 times [2023-11-23 21:38:45,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:45,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197446413] [2023-11-23 21:38:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:45,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:46,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:46,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197446413] [2023-11-23 21:38:46,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197446413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:38:46,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224814165] [2023-11-23 21:38:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:46,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:38:46,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:38:46,007 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:38:46,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:38:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:46,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:38:46,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:38:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:38:46,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:38:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:38:46,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224814165] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:38:46,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:38:46,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-11-23 21:38:46,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030536780] [2023-11-23 21:38:46,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:38:46,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:38:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:46,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:38:46,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:38:46,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:46,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:46,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:46,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:46,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:47,086 INFO L124 PetriNetUnfolderBase]: 2822/5405 cut-off events. [2023-11-23 21:38:47,086 INFO L125 PetriNetUnfolderBase]: For 7058/7094 co-relation queries the response was YES. [2023-11-23 21:38:47,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15322 conditions, 5405 events. 2822/5405 cut-off events. For 7058/7094 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 37902 event pairs, 489 based on Foata normal form. 0/5395 useless extension candidates. Maximal degree in co-relation 13657. Up to 1144 conditions per place. [2023-11-23 21:38:47,149 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 174 selfloop transitions, 7 changer transitions 18/205 dead transitions. [2023-11-23 21:38:47,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 205 transitions, 1685 flow [2023-11-23 21:38:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:38:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 21:38:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2023-11-23 21:38:47,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6330645161290323 [2023-11-23 21:38:47,153 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 157 transitions. [2023-11-23 21:38:47,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 157 transitions. [2023-11-23 21:38:47,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:47,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 157 transitions. [2023-11-23 21:38:47,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:47,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:47,158 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:47,158 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 264 flow. Second operand 8 states and 157 transitions. [2023-11-23 21:38:47,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 205 transitions, 1685 flow [2023-11-23 21:38:47,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 205 transitions, 1598 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-23 21:38:47,179 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 258 flow [2023-11-23 21:38:47,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2023-11-23 21:38:47,181 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2023-11-23 21:38:47,181 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 258 flow [2023-11-23 21:38:47,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:47,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:38:47,183 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2023-11-23 21:38:47,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:38:47,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:38:47,399 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 21:38:47,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:47,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1403383288, now seen corresponding path program 2 times [2023-11-23 21:38:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:47,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556810306] [2023-11-23 21:38:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:47,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:47,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556810306] [2023-11-23 21:38:47,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556810306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:38:47,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021664277] [2023-11-23 21:38:47,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:38:47,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:38:47,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:38:47,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:38:47,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:38:47,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 21:38:47,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:38:47,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:38:47,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:38:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:38:47,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:38:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:38:47,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021664277] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:38:47,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:38:47,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2023-11-23 21:38:47,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596272422] [2023-11-23 21:38:47,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:38:47,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:38:47,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:47,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:38:47,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:38:47,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-23 21:38:47,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 258 flow. Second operand has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:47,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:38:47,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-23 21:38:47,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:38:48,827 INFO L124 PetriNetUnfolderBase]: 2478/4684 cut-off events. [2023-11-23 21:38:48,827 INFO L125 PetriNetUnfolderBase]: For 7338/7338 co-relation queries the response was YES. [2023-11-23 21:38:48,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14323 conditions, 4684 events. 2478/4684 cut-off events. For 7338/7338 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 31047 event pairs, 251 based on Foata normal form. 120/4800 useless extension candidates. Maximal degree in co-relation 10881. Up to 761 conditions per place. [2023-11-23 21:38:48,844 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 0 selfloop transitions, 0 changer transitions 188/188 dead transitions. [2023-11-23 21:38:48,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 188 transitions, 1298 flow [2023-11-23 21:38:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:38:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-23 21:38:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2023-11-23 21:38:48,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990783410138248 [2023-11-23 21:38:48,847 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 260 transitions. [2023-11-23 21:38:48,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 260 transitions. [2023-11-23 21:38:48,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:38:48,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 260 transitions. [2023-11-23 21:38:48,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 18.571428571428573) internal successors, (260), 14 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:48,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 31.0) internal successors, (465), 15 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:48,851 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 31.0) internal successors, (465), 15 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:48,851 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 258 flow. Second operand 14 states and 260 transitions. [2023-11-23 21:38:48,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 188 transitions, 1298 flow [2023-11-23 21:38:48,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 188 transitions, 1115 flow, removed 50 selfloop flow, removed 9 redundant places. [2023-11-23 21:38:48,872 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-11-23 21:38:48,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-11-23 21:38:48,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2023-11-23 21:38:48,873 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-11-23 21:38:48,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:38:48,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-11-23 21:38:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-11-23 21:38:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-11-23 21:38:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-11-23 21:38:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-11-23 21:38:48,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-11-23 21:38:48,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2023-11-23 21:38:48,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2023-11-23 21:38:48,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-11-23 21:38:48,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-11-23 21:38:48,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-11-23 21:38:48,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-11-23 21:38:48,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-11-23 21:38:48,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-11-23 21:38:48,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:38:49,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:38:49,098 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:38:49,102 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 21:38:49,103 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:38:49,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:38:49 BasicIcfg [2023-11-23 21:38:49,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:38:49,108 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:38:49,109 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:38:49,109 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:38:49,109 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:38:40" (3/4) ... [2023-11-23 21:38:49,112 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:38:49,115 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 21:38:49,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 21:38:49,125 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 82 nodes and edges [2023-11-23 21:38:49,135 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-23 21:38:49,135 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-23 21:38:49,136 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:38:49,280 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:38:49,281 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 21:38:49,281 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:38:49,282 INFO L158 Benchmark]: Toolchain (without parser) took 10321.74ms. Allocated memory was 132.1MB in the beginning and 266.3MB in the end (delta: 134.2MB). Free memory was 87.4MB in the beginning and 123.0MB in the end (delta: -35.6MB). Peak memory consumption was 101.2MB. Max. memory is 16.1GB. [2023-11-23 21:38:49,282 INFO L158 Benchmark]: CDTParser took 1.24ms. Allocated memory is still 132.1MB. Free memory was 103.4MB in the beginning and 103.3MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:38:49,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.71ms. Allocated memory is still 132.1MB. Free memory was 86.9MB in the beginning and 76.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:38:49,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.51ms. Allocated memory is still 132.1MB. Free memory was 76.0MB in the beginning and 74.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:38:49,283 INFO L158 Benchmark]: Boogie Preprocessor took 44.43ms. Allocated memory is still 132.1MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:38:49,284 INFO L158 Benchmark]: RCFGBuilder took 981.02ms. Allocated memory was 132.1MB in the beginning and 182.5MB in the end (delta: 50.3MB). Free memory was 72.3MB in the beginning and 136.5MB in the end (delta: -64.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2023-11-23 21:38:49,284 INFO L158 Benchmark]: TraceAbstraction took 8747.69ms. Allocated memory was 182.5MB in the beginning and 266.3MB in the end (delta: 83.9MB). Free memory was 135.4MB in the beginning and 128.1MB in the end (delta: 7.3MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. [2023-11-23 21:38:49,285 INFO L158 Benchmark]: Witness Printer took 172.64ms. Allocated memory is still 266.3MB. Free memory was 128.1MB in the beginning and 123.0MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:38:49,287 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24ms. Allocated memory is still 132.1MB. Free memory was 103.4MB in the beginning and 103.3MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.71ms. Allocated memory is still 132.1MB. Free memory was 86.9MB in the beginning and 76.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.51ms. Allocated memory is still 132.1MB. Free memory was 76.0MB in the beginning and 74.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.43ms. Allocated memory is still 132.1MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 981.02ms. Allocated memory was 132.1MB in the beginning and 182.5MB in the end (delta: 50.3MB). Free memory was 72.3MB in the beginning and 136.5MB in the end (delta: -64.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8747.69ms. Allocated memory was 182.5MB in the beginning and 266.3MB in the end (delta: 83.9MB). Free memory was 135.4MB in the beginning and 128.1MB in the end (delta: 7.3MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. * Witness Printer took 172.64ms. Allocated memory is still 266.3MB. Free memory was 128.1MB in the beginning and 123.0MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.6s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 710 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 680 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1246 IncrementalHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 11 mSDtfsCounter, 1246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=8, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 154 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 528 SizeOfPredicates, 13 NumberOfNonLiveVariables, 454 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 50/124 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:38:49,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eb043c-f05c-427b-b3a6-c7a2f4959ffc/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE