./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx --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 b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:15:55,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:15:55,293 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:15:55,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:15:55,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:15:55,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:15:55,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:15:55,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:15:55,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:15:55,328 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:15:55,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:15:55,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:15:55,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:15:55,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:15:55,330 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:15:55,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:15:55,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:15:55,332 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:15:55,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:15:55,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:15:55,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:15:55,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:15:55,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:15:55,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:15:55,335 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:15:55,336 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:15:55,336 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:15:55,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:15:55,337 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:15:55,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:15:55,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:15:55,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:15:55,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:15:55,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:15:55,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:15:55,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:15:55,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:15:55,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:15:55,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:15:55,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:15:55,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:15:55,343 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:15:55,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:15:55,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:15:55,343 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_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 [2023-11-21 22:15:55,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:15:55,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:15:55,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:15:55,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:15:55,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:15:55,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i [2023-11-21 22:15:58,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:15:59,119 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:15:59,120 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/sv-benchmarks/c/goblint-regression/09-regions_17-arrayloop_nr.i [2023-11-21 22:15:59,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/data/73f746823/61c8fa7031924558988a9cb80cc65c49/FLAGf9d324893 [2023-11-21 22:15:59,179 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/data/73f746823/61c8fa7031924558988a9cb80cc65c49 [2023-11-21 22:15:59,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:15:59,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:15:59,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:15:59,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:15:59,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:15:59,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:15:59" (1/1) ... [2023-11-21 22:15:59,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ad748c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:15:59, skipping insertion in model container [2023-11-21 22:15:59,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:15:59" (1/1) ... [2023-11-21 22:15:59,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:16:00,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:00,075 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:16:00,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:00,279 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:16:00,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00 WrapperNode [2023-11-21 22:16:00,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:00,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:00,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:16:00,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:16:00,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,380 INFO L138 Inliner]: procedures = 369, calls = 30, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 133 [2023-11-21 22:16:00,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:00,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:16:00,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:16:00,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:16:00,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,414 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,439 INFO L187 HeapSplitter]: Split 19 memory accesses to 4 slices as follows [0, 4, 14, 1] [2023-11-21 22:16:00,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:16:00,496 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:16:00,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:16:00,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:16:00,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (1/1) ... [2023-11-21 22:16:00,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:00,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:00,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:16:00,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:16:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:16:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:16:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:16:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:16:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:16:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:16:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:16:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:16:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:16:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:16:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:16:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:16:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:16:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:16:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:16:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:16:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:16:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:16:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:16:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:16:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:16:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:16:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:16:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:16:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:16:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:16:00,585 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:16:00,875 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:16:00,878 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:16:01,263 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:16:01,585 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:16:01,585 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 22:16:01,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:01 BoogieIcfgContainer [2023-11-21 22:16:01,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:16:01,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:16:01,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:16:01,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:16:01,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:15:59" (1/3) ... [2023-11-21 22:16:01,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31860299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:01, skipping insertion in model container [2023-11-21 22:16:01,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:00" (2/3) ... [2023-11-21 22:16:01,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31860299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:01, skipping insertion in model container [2023-11-21 22:16:01,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:01" (3/3) ... [2023-11-21 22:16:01,601 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_17-arrayloop_nr.i [2023-11-21 22:16:01,615 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:16:01,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:16:01,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 22:16:01,627 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:16:01,679 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:16:01,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 74 flow [2023-11-21 22:16:01,739 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-11-21 22:16:01,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:01,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 3/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-21 22:16:01,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 74 flow [2023-11-21 22:16:01,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 34 transitions, 71 flow [2023-11-21 22:16:01,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:01,775 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;@6549caf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:01,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 22:16:01,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:01,780 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-21 22:16:01,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:01,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:01,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:16:01,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:01,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash 377628, now seen corresponding path program 1 times [2023-11-21 22:16:01,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:01,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542610905] [2023-11-21 22:16:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:01,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:02,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:02,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542610905] [2023-11-21 22:16:02,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542610905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:02,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:02,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585753746] [2023-11-21 22:16:02,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:02,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:02,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-21 22:16:02,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:02,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:02,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-21 22:16:02,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:02,659 INFO L124 PetriNetUnfolderBase]: 86/253 cut-off events. [2023-11-21 22:16:02,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 253 events. 86/253 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1054 event pairs, 36 based on Foata normal form. 8/235 useless extension candidates. Maximal degree in co-relation 410. Up to 106 conditions per place. [2023-11-21 22:16:02,665 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 30 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-11-21 22:16:02,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 48 transitions, 169 flow [2023-11-21 22:16:02,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:16:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2023-11-21 22:16:02,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2023-11-21 22:16:02,679 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 95 transitions. [2023-11-21 22:16:02,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 95 transitions. [2023-11-21 22:16:02,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:02,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 95 transitions. [2023-11-21 22:16:02,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:02,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:02,690 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:02,691 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 71 flow. Second operand 4 states and 95 transitions. [2023-11-21 22:16:02,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 48 transitions, 169 flow [2023-11-21 22:16:02,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:16:02,698 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 106 flow [2023-11-21 22:16:02,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-11-21 22:16:02,704 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-21 22:16:02,704 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 106 flow [2023-11-21 22:16:02,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:02,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:02,705 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 22:16:02,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:16:02,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:02,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1634621005, now seen corresponding path program 1 times [2023-11-21 22:16:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:02,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138041529] [2023-11-21 22:16:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:02,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:02,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138041529] [2023-11-21 22:16:02,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138041529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:16:02,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347351598] [2023-11-21 22:16:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:02,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:02,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:02,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:16:02,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:16:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:03,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:16:03,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:16:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:03,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:16:03,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347351598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:03,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:16:03,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-21 22:16:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736620788] [2023-11-21 22:16:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:03,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:03,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:16:03,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-21 22:16:03,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:03,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-21 22:16:03,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:03,456 INFO L124 PetriNetUnfolderBase]: 86/255 cut-off events. [2023-11-21 22:16:03,457 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-21 22:16:03,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 255 events. 86/255 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1038 event pairs, 16 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 459. Up to 92 conditions per place. [2023-11-21 22:16:03,466 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 34 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2023-11-21 22:16:03,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 220 flow [2023-11-21 22:16:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2023-11-21 22:16:03,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-21 22:16:03,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 126 transitions. [2023-11-21 22:16:03,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 126 transitions. [2023-11-21 22:16:03,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:03,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 126 transitions. [2023-11-21 22:16:03,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,484 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,484 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 106 flow. Second operand 6 states and 126 transitions. [2023-11-21 22:16:03,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 220 flow [2023-11-21 22:16:03,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:16:03,489 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 112 flow [2023-11-21 22:16:03,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-11-21 22:16:03,490 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-21 22:16:03,490 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 112 flow [2023-11-21 22:16:03,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:03,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-21 22:16:03,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:16:03,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:03,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:03,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:03,705 INFO L85 PathProgramCache]: Analyzing trace with hash 866356765, now seen corresponding path program 1 times [2023-11-21 22:16:03,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:03,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586369109] [2023-11-21 22:16:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:03,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:03,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:03,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586369109] [2023-11-21 22:16:03,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586369109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:03,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:03,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:03,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619499375] [2023-11-21 22:16:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:03,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:03,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:03,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-21 22:16:03,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:03,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-21 22:16:03,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:03,922 INFO L124 PetriNetUnfolderBase]: 86/261 cut-off events. [2023-11-21 22:16:03,922 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-21 22:16:03,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 261 events. 86/261 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1110 event pairs, 66 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 474. Up to 174 conditions per place. [2023-11-21 22:16:03,925 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-11-21 22:16:03,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 152 flow [2023-11-21 22:16:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:16:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2023-11-21 22:16:03,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2023-11-21 22:16:03,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 62 transitions. [2023-11-21 22:16:03,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 62 transitions. [2023-11-21 22:16:03,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:03,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 62 transitions. [2023-11-21 22:16:03,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,929 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 112 flow. Second operand 3 states and 62 transitions. [2023-11-21 22:16:03,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 152 flow [2023-11-21 22:16:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 140 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-21 22:16:03,931 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 104 flow [2023-11-21 22:16:03,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-11-21 22:16:03,932 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-21 22:16:03,933 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 104 flow [2023-11-21 22:16:03,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:03,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:03,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:03,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:16:03,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:03,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -85109464, now seen corresponding path program 1 times [2023-11-21 22:16:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:03,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823865678] [2023-11-21 22:16:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:03,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823865678] [2023-11-21 22:16:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823865678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:16:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873658517] [2023-11-21 22:16:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:04,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:04,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:16:04,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:16:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:04,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:16:04,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:16:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:04,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:16:04,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873658517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:04,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:16:04,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-21 22:16:04,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813650039] [2023-11-21 22:16:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:04,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:04,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:04,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:04,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-21 22:16:04,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2023-11-21 22:16:04,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:04,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-21 22:16:04,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:04,391 INFO L124 PetriNetUnfolderBase]: 194/527 cut-off events. [2023-11-21 22:16:04,391 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-21 22:16:04,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 527 events. 194/527 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2641 event pairs, 106 based on Foata normal form. 12/465 useless extension candidates. Maximal degree in co-relation 941. Up to 192 conditions per place. [2023-11-21 22:16:04,396 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 35 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-11-21 22:16:04,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 221 flow [2023-11-21 22:16:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:16:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-21 22:16:04,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2023-11-21 22:16:04,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-21 22:16:04,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-21 22:16:04,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:04,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-21 22:16:04,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:04,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:04,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:04,400 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 104 flow. Second operand 3 states and 78 transitions. [2023-11-21 22:16:04,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 221 flow [2023-11-21 22:16:04,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 213 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:16:04,403 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 126 flow [2023-11-21 22:16:04,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-21 22:16:04,404 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-21 22:16:04,404 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 126 flow [2023-11-21 22:16:04,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2023-11-21 22:16:04,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:04,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:04,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:16:04,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:04,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:04,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:04,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1656574304, now seen corresponding path program 1 times [2023-11-21 22:16:04,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964886305] [2023-11-21 22:16:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:04,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:04,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964886305] [2023-11-21 22:16:04,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964886305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:16:04,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95622877] [2023-11-21 22:16:04,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:04,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:04,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:04,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:16:04,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:16:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:04,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:16:04,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:16:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:16:04,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:16:04,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95622877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:04,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:16:04,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-21 22:16:04,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031227429] [2023-11-21 22:16:04,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:04,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:04,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:04,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:04,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-21 22:16:04,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2023-11-21 22:16:04,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:04,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-21 22:16:04,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:05,062 INFO L124 PetriNetUnfolderBase]: 170/493 cut-off events. [2023-11-21 22:16:05,062 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-11-21 22:16:05,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 493 events. 170/493 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2531 event pairs, 96 based on Foata normal form. 23/465 useless extension candidates. Maximal degree in co-relation 996. Up to 200 conditions per place. [2023-11-21 22:16:05,067 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 34 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-11-21 22:16:05,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 225 flow [2023-11-21 22:16:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:05,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:16:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-21 22:16:05,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-21 22:16:05,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-21 22:16:05,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-21 22:16:05,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:05,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-21 22:16:05,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:05,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:05,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:05,071 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 126 flow. Second operand 3 states and 77 transitions. [2023-11-21 22:16:05,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 225 flow [2023-11-21 22:16:05,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:16:05,074 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 116 flow [2023-11-21 22:16:05,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-21 22:16:05,075 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-21 22:16:05,076 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 116 flow [2023-11-21 22:16:05,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2023-11-21 22:16:05,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:05,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:05,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:16:05,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:05,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:05,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:05,297 INFO L85 PathProgramCache]: Analyzing trace with hash -914953916, now seen corresponding path program 1 times [2023-11-21 22:16:05,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:05,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864751375] [2023-11-21 22:16:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864751375] [2023-11-21 22:16:05,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864751375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:16:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253834958] [2023-11-21 22:16:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:05,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:05,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:05,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:16:05,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:16:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:05,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:16:05,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:16:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:05,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:16:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:05,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253834958] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:16:05,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:16:05,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-21 22:16:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839892014] [2023-11-21 22:16:05,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:16:05,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:16:05,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:16:05,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:16:05,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:16:05,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 116 flow. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:05,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:05,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:16:05,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:05,993 INFO L124 PetriNetUnfolderBase]: 170/491 cut-off events. [2023-11-21 22:16:05,993 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-11-21 22:16:05,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 491 events. 170/491 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2364 event pairs, 60 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 967. Up to 145 conditions per place. [2023-11-21 22:16:05,998 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 37 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2023-11-21 22:16:05,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 294 flow [2023-11-21 22:16:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:16:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:16:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2023-11-21 22:16:06,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2023-11-21 22:16:06,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 138 transitions. [2023-11-21 22:16:06,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 138 transitions. [2023-11-21 22:16:06,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:06,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 138 transitions. [2023-11-21 22:16:06,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,006 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,006 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 116 flow. Second operand 7 states and 138 transitions. [2023-11-21 22:16:06,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 294 flow [2023-11-21 22:16:06,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:16:06,012 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 178 flow [2023-11-21 22:16:06,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-21 22:16:06,015 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-21 22:16:06,015 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 178 flow [2023-11-21 22:16:06,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:06,016 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:06,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:16:06,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:06,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:06,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1510770148, now seen corresponding path program 2 times [2023-11-21 22:16:06,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:06,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972867783] [2023-11-21 22:16:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:16:06,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972867783] [2023-11-21 22:16:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972867783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:06,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:06,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:16:06,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916708108] [2023-11-21 22:16:06,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:06,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:06,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:06,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:06,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:06,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-21 22:16:06,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:06,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-21 22:16:06,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:06,632 INFO L124 PetriNetUnfolderBase]: 170/456 cut-off events. [2023-11-21 22:16:06,632 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2023-11-21 22:16:06,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 456 events. 170/456 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2094 event pairs, 94 based on Foata normal form. 24/461 useless extension candidates. Maximal degree in co-relation 998. Up to 225 conditions per place. [2023-11-21 22:16:06,637 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 43 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-21 22:16:06,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 338 flow [2023-11-21 22:16:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:16:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2023-11-21 22:16:06,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-21 22:16:06,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 100 transitions. [2023-11-21 22:16:06,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 100 transitions. [2023-11-21 22:16:06,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:06,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 100 transitions. [2023-11-21 22:16:06,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,642 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,642 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 178 flow. Second operand 4 states and 100 transitions. [2023-11-21 22:16:06,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 338 flow [2023-11-21 22:16:06,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 326 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-21 22:16:06,648 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 190 flow [2023-11-21 22:16:06,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-11-21 22:16:06,649 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-11-21 22:16:06,649 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 190 flow [2023-11-21 22:16:06,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:06,650 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:16:06,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:06,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash 784833483, now seen corresponding path program 1 times [2023-11-21 22:16:06,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:06,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217628769] [2023-11-21 22:16:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:06,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:16:06,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:06,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217628769] [2023-11-21 22:16:06,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217628769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:06,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:06,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:16:06,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044793611] [2023-11-21 22:16:06,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:06,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:06,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:06,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:06,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:06,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-21 22:16:06,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:06,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:06,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-21 22:16:06,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:07,038 INFO L124 PetriNetUnfolderBase]: 194/493 cut-off events. [2023-11-21 22:16:07,038 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2023-11-21 22:16:07,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 493 events. 194/493 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2341 event pairs, 112 based on Foata normal form. 24/506 useless extension candidates. Maximal degree in co-relation 1230. Up to 275 conditions per place. [2023-11-21 22:16:07,044 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 50 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-21 22:16:07,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 394 flow [2023-11-21 22:16:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:16:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2023-11-21 22:16:07,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-21 22:16:07,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 92 transitions. [2023-11-21 22:16:07,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 92 transitions. [2023-11-21 22:16:07,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:07,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 92 transitions. [2023-11-21 22:16:07,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:07,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:07,048 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:07,048 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 190 flow. Second operand 4 states and 92 transitions. [2023-11-21 22:16:07,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 394 flow [2023-11-21 22:16:07,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:16:07,055 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 204 flow [2023-11-21 22:16:07,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-21 22:16:07,059 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-11-21 22:16:07,059 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 204 flow [2023-11-21 22:16:07,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:07,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:07,060 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:07,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:16:07,061 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:07,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash -439978553, now seen corresponding path program 1 times [2023-11-21 22:16:07,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:07,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516295186] [2023-11-21 22:16:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:07,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:07,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:16:07,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:07,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516295186] [2023-11-21 22:16:07,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516295186] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:16:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971592820] [2023-11-21 22:16:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:07,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:07,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:07,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:16:07,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:16:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:07,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:16:07,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:16:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:16:07,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:16:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:16:07,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971592820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:16:07,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:16:07,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 19 [2023-11-21 22:16:07,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756809789] [2023-11-21 22:16:07,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:16:07,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-21 22:16:07,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-21 22:16:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:16:07,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2023-11-21 22:16:07,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 204 flow. Second operand has 19 states, 19 states have (on average 10.947368421052632) internal successors, (208), 19 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:07,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:07,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2023-11-21 22:16:07,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:08,960 INFO L124 PetriNetUnfolderBase]: 352/865 cut-off events. [2023-11-21 22:16:08,960 INFO L125 PetriNetUnfolderBase]: For 1099/1099 co-relation queries the response was YES. [2023-11-21 22:16:08,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 865 events. 352/865 cut-off events. For 1099/1099 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4082 event pairs, 43 based on Foata normal form. 18/883 useless extension candidates. Maximal degree in co-relation 2229. Up to 120 conditions per place. [2023-11-21 22:16:08,970 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 100 selfloop transitions, 49 changer transitions 0/157 dead transitions. [2023-11-21 22:16:08,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 157 transitions, 985 flow [2023-11-21 22:16:08,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-21 22:16:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-21 22:16:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 372 transitions. [2023-11-21 22:16:08,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2023-11-21 22:16:08,973 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 372 transitions. [2023-11-21 22:16:08,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 372 transitions. [2023-11-21 22:16:08,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:08,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 372 transitions. [2023-11-21 22:16:08,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 15.5) internal successors, (372), 24 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:08,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 35.0) internal successors, (875), 25 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:08,980 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 35.0) internal successors, (875), 25 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:08,980 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 204 flow. Second operand 24 states and 372 transitions. [2023-11-21 22:16:08,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 157 transitions, 985 flow [2023-11-21 22:16:08,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 157 transitions, 952 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:16:08,988 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 606 flow [2023-11-21 22:16:08,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=606, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2023-11-21 22:16:08,990 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 51 predicate places. [2023-11-21 22:16:08,991 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 606 flow [2023-11-21 22:16:08,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.947368421052632) internal successors, (208), 19 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:08,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:08,991 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:09,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:16:09,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:09,204 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:09,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:09,205 INFO L85 PathProgramCache]: Analyzing trace with hash 687591647, now seen corresponding path program 1 times [2023-11-21 22:16:09,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315869705] [2023-11-21 22:16:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:09,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:16:09,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:09,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315869705] [2023-11-21 22:16:09,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315869705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:16:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86151448] [2023-11-21 22:16:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:09,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:09,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:16:09,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:16:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:10,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:16:10,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:16:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:16:10,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:16:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:16:10,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86151448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:16:10,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:16:10,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-21 22:16:10,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662475342] [2023-11-21 22:16:10,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:16:10,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-21 22:16:10,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:10,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-21 22:16:10,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-21 22:16:10,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:16:10,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 606 flow. Second operand has 23 states, 23 states have (on average 14.434782608695652) internal successors, (332), 23 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:10,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:10,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:16:10,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:11,161 INFO L124 PetriNetUnfolderBase]: 258/691 cut-off events. [2023-11-21 22:16:11,161 INFO L125 PetriNetUnfolderBase]: For 1751/1757 co-relation queries the response was YES. [2023-11-21 22:16:11,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 691 events. 258/691 cut-off events. For 1751/1757 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3212 event pairs, 77 based on Foata normal form. 4/691 useless extension candidates. Maximal degree in co-relation 1969. Up to 211 conditions per place. [2023-11-21 22:16:11,170 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 46 selfloop transitions, 37 changer transitions 0/98 dead transitions. [2023-11-21 22:16:11,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 914 flow [2023-11-21 22:16:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-21 22:16:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-21 22:16:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 335 transitions. [2023-11-21 22:16:11,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2023-11-21 22:16:11,172 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 335 transitions. [2023-11-21 22:16:11,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 335 transitions. [2023-11-21 22:16:11,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:11,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 335 transitions. [2023-11-21 22:16:11,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 15.952380952380953) internal successors, (335), 21 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:11,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 35.0) internal successors, (770), 22 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:11,202 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 35.0) internal successors, (770), 22 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:11,202 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 606 flow. Second operand 21 states and 335 transitions. [2023-11-21 22:16:11,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 914 flow [2023-11-21 22:16:11,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 876 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-21 22:16:11,218 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 743 flow [2023-11-21 22:16:11,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=743, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2023-11-21 22:16:11,219 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 68 predicate places. [2023-11-21 22:16:11,219 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 743 flow [2023-11-21 22:16:11,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.434782608695652) internal successors, (332), 23 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:11,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:11,220 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:11,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:16:11,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:16:11,440 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:11,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:11,441 INFO L85 PathProgramCache]: Analyzing trace with hash -725428344, now seen corresponding path program 2 times [2023-11-21 22:16:11,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:11,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496303859] [2023-11-21 22:16:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:11,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 22:16:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496303859] [2023-11-21 22:16:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496303859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:16:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143408221] [2023-11-21 22:16:11,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:16:11,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:11,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:11,815 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:16:11,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:16:12,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:16:12,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:16:12,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:16:12,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:16:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 22:16:12,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:16:12,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143408221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:12,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:16:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-21 22:16:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265468557] [2023-11-21 22:16:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:12,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:16:12,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:16:12,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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) [2023-11-21 22:16:12,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:12,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:16:12,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:12,653 INFO L124 PetriNetUnfolderBase]: 281/691 cut-off events. [2023-11-21 22:16:12,653 INFO L125 PetriNetUnfolderBase]: For 1833/1839 co-relation queries the response was YES. [2023-11-21 22:16:12,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 691 events. 281/691 cut-off events. For 1833/1839 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3151 event pairs, 90 based on Foata normal form. 23/702 useless extension candidates. Maximal degree in co-relation 2000. Up to 325 conditions per place. [2023-11-21 22:16:12,663 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 76 selfloop transitions, 14 changer transitions 2/109 dead transitions. [2023-11-21 22:16:12,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 1092 flow [2023-11-21 22:16:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:16:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2023-11-21 22:16:12,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2023-11-21 22:16:12,665 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 90 transitions. [2023-11-21 22:16:12,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 90 transitions. [2023-11-21 22:16:12,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:12,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 90 transitions. [2023-11-21 22:16:12,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:12,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:12,667 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:12,667 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 743 flow. Second operand 4 states and 90 transitions. [2023-11-21 22:16:12,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 1092 flow [2023-11-21 22:16:12,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 1019 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-11-21 22:16:12,684 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 694 flow [2023-11-21 22:16:12,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=694, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2023-11-21 22:16:12,685 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 57 predicate places. [2023-11-21 22:16:12,685 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 694 flow [2023-11-21 22:16:12,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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) [2023-11-21 22:16:12,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:12,686 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:12,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:16:12,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 22:16:12,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:12,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1013441831, now seen corresponding path program 1 times [2023-11-21 22:16:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:12,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214594241] [2023-11-21 22:16:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:12,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-21 22:16:13,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:13,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214594241] [2023-11-21 22:16:13,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214594241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:13,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:13,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:16:13,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129849714] [2023-11-21 22:16:13,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:13,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:13,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:13,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:13,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:13,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:16:13,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 694 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:13,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:16:13,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:13,460 INFO L124 PetriNetUnfolderBase]: 258/653 cut-off events. [2023-11-21 22:16:13,460 INFO L125 PetriNetUnfolderBase]: For 2132/2135 co-relation queries the response was YES. [2023-11-21 22:16:13,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 653 events. 258/653 cut-off events. For 2132/2135 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2924 event pairs, 65 based on Foata normal form. 19/662 useless extension candidates. Maximal degree in co-relation 1966. Up to 327 conditions per place. [2023-11-21 22:16:13,469 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 43 selfloop transitions, 39 changer transitions 8/103 dead transitions. [2023-11-21 22:16:13,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 1002 flow [2023-11-21 22:16:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:16:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2023-11-21 22:16:13,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2023-11-21 22:16:13,471 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 89 transitions. [2023-11-21 22:16:13,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 89 transitions. [2023-11-21 22:16:13,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:13,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 89 transitions. [2023-11-21 22:16:13,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,473 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,473 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 694 flow. Second operand 4 states and 89 transitions. [2023-11-21 22:16:13,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 1002 flow [2023-11-21 22:16:13,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 103 transitions, 973 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:16:13,487 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 709 flow [2023-11-21 22:16:13,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=709, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2023-11-21 22:16:13,488 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 56 predicate places. [2023-11-21 22:16:13,488 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 709 flow [2023-11-21 22:16:13,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:13,489 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:13,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:16:13,489 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:13,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1864508504, now seen corresponding path program 1 times [2023-11-21 22:16:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:13,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001715670] [2023-11-21 22:16:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-21 22:16:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001715670] [2023-11-21 22:16:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001715670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:13,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:13,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:13,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425147454] [2023-11-21 22:16:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:13,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:13,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:13,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:16:13,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 709 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:13,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:16:13,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:13,902 INFO L124 PetriNetUnfolderBase]: 246/683 cut-off events. [2023-11-21 22:16:13,903 INFO L125 PetriNetUnfolderBase]: For 2352/2357 co-relation queries the response was YES. [2023-11-21 22:16:13,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 683 events. 246/683 cut-off events. For 2352/2357 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3093 event pairs, 23 based on Foata normal form. 30/711 useless extension candidates. Maximal degree in co-relation 1920. Up to 410 conditions per place. [2023-11-21 22:16:13,911 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 63 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2023-11-21 22:16:13,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 933 flow [2023-11-21 22:16:13,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:16:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2023-11-21 22:16:13,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2023-11-21 22:16:13,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 68 transitions. [2023-11-21 22:16:13,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 68 transitions. [2023-11-21 22:16:13,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:13,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 68 transitions. [2023-11-21 22:16:13,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,915 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 709 flow. Second operand 3 states and 68 transitions. [2023-11-21 22:16:13,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 933 flow [2023-11-21 22:16:13,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 807 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-21 22:16:13,926 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 611 flow [2023-11-21 22:16:13,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=611, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-11-21 22:16:13,927 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2023-11-21 22:16:13,927 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 611 flow [2023-11-21 22:16:13,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:13,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:13,928 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:13,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:16:13,928 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:13,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1238806221, now seen corresponding path program 1 times [2023-11-21 22:16:13,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111315996] [2023-11-21 22:16:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 22:16:14,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111315996] [2023-11-21 22:16:14,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111315996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:16:14,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018003820] [2023-11-21 22:16:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:14,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:16:14,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:14,255 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:16:14,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:16:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:14,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:16:14,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:16:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-21 22:16:14,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:16:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018003820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:14,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:16:14,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-21 22:16:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472670326] [2023-11-21 22:16:14,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:14,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:14,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:16:14,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-21 22:16:14,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 611 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:14,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:14,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-21 22:16:14,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:15,148 INFO L124 PetriNetUnfolderBase]: 222/607 cut-off events. [2023-11-21 22:16:15,148 INFO L125 PetriNetUnfolderBase]: For 1770/1772 co-relation queries the response was YES. [2023-11-21 22:16:15,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 607 events. 222/607 cut-off events. For 1770/1772 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2518 event pairs, 24 based on Foata normal form. 38/643 useless extension candidates. Maximal degree in co-relation 1664. Up to 206 conditions per place. [2023-11-21 22:16:15,156 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 82 selfloop transitions, 14 changer transitions 0/108 dead transitions. [2023-11-21 22:16:15,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 108 transitions, 966 flow [2023-11-21 22:16:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2023-11-21 22:16:15,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-21 22:16:15,158 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 126 transitions. [2023-11-21 22:16:15,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 126 transitions. [2023-11-21 22:16:15,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:15,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 126 transitions. [2023-11-21 22:16:15,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,161 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,162 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 611 flow. Second operand 6 states and 126 transitions. [2023-11-21 22:16:15,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 108 transitions, 966 flow [2023-11-21 22:16:15,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 108 transitions, 949 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:16:15,203 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 607 flow [2023-11-21 22:16:15,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=607, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2023-11-21 22:16:15,204 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 53 predicate places. [2023-11-21 22:16:15,206 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 607 flow [2023-11-21 22:16:15,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:15,207 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:15,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:16:15,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 22:16:15,408 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:16:15,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash 251713211, now seen corresponding path program 1 times [2023-11-21 22:16:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:15,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624445057] [2023-11-21 22:16:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-21 22:16:15,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624445057] [2023-11-21 22:16:15,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624445057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:15,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:16:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355735] [2023-11-21 22:16:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:15,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:15,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:15,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:15,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:15,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-21 22:16:15,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:15,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-21 22:16:15,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:15,951 INFO L124 PetriNetUnfolderBase]: 234/615 cut-off events. [2023-11-21 22:16:15,952 INFO L125 PetriNetUnfolderBase]: For 1689/1690 co-relation queries the response was YES. [2023-11-21 22:16:15,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 615 events. 234/615 cut-off events. For 1689/1690 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2559 event pairs, 39 based on Foata normal form. 25/637 useless extension candidates. Maximal degree in co-relation 1736. Up to 313 conditions per place. [2023-11-21 22:16:15,956 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2023-11-21 22:16:15,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 95 transitions, 939 flow [2023-11-21 22:16:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:16:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2023-11-21 22:16:15,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2023-11-21 22:16:15,958 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 79 transitions. [2023-11-21 22:16:15,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 79 transitions. [2023-11-21 22:16:15,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:15,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 79 transitions. [2023-11-21 22:16:15,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,960 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 607 flow. Second operand 4 states and 79 transitions. [2023-11-21 22:16:15,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 95 transitions, 939 flow [2023-11-21 22:16:15,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 902 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-21 22:16:15,968 INFO L231 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2023-11-21 22:16:15,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2023-11-21 22:16:15,969 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 49 predicate places. [2023-11-21 22:16:15,969 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2023-11-21 22:16:15,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:15,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-11-21 22:16:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-21 22:16:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-21 22:16:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-21 22:16:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-11-21 22:16:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-21 22:16:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-21 22:16:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-21 22:16:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-21 22:16:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-21 22:16:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-21 22:16:15,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-21 22:16:15,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-21 22:16:15,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:16:15,975 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:15,981 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:16:15,981 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:16:15,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:16:15 BasicIcfg [2023-11-21 22:16:15,987 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:16:15,988 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:16:15,988 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:16:15,988 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:16:15,989 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:01" (3/4) ... [2023-11-21 22:16:15,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:16:15,994 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-21 22:16:15,999 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-11-21 22:16:15,999 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-21 22:16:15,999 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-21 22:16:16,000 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:16:16,087 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:16:16,087 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:16:16,088 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:16:16,088 INFO L158 Benchmark]: Toolchain (without parser) took 16904.26ms. Allocated memory was 146.8MB in the beginning and 333.4MB in the end (delta: 186.6MB). Free memory was 105.4MB in the beginning and 150.2MB in the end (delta: -44.8MB). Peak memory consumption was 143.5MB. Max. memory is 16.1GB. [2023-11-21 22:16:16,089 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:16:16,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1094.82ms. Allocated memory is still 146.8MB. Free memory was 105.0MB in the beginning and 104.2MB in the end (delta: 797.0kB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2023-11-21 22:16:16,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.74ms. Allocated memory is still 146.8MB. Free memory was 104.2MB in the beginning and 100.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:16:16,090 INFO L158 Benchmark]: Boogie Preprocessor took 113.53ms. Allocated memory is still 146.8MB. Free memory was 100.7MB in the beginning and 97.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:16:16,090 INFO L158 Benchmark]: RCFGBuilder took 1090.97ms. Allocated memory is still 146.8MB. Free memory was 97.9MB in the beginning and 96.0MB in the end (delta: 1.9MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2023-11-21 22:16:16,091 INFO L158 Benchmark]: TraceAbstraction took 14394.82ms. Allocated memory was 146.8MB in the beginning and 333.4MB in the end (delta: 186.6MB). Free memory was 96.0MB in the beginning and 154.4MB in the end (delta: -58.4MB). Peak memory consumption was 129.2MB. Max. memory is 16.1GB. [2023-11-21 22:16:16,091 INFO L158 Benchmark]: Witness Printer took 100.18ms. Allocated memory is still 333.4MB. Free memory was 154.4MB in the beginning and 150.2MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:16:16,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1094.82ms. Allocated memory is still 146.8MB. Free memory was 105.0MB in the beginning and 104.2MB in the end (delta: 797.0kB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.74ms. Allocated memory is still 146.8MB. Free memory was 104.2MB in the beginning and 100.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 113.53ms. Allocated memory is still 146.8MB. Free memory was 100.7MB in the beginning and 97.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1090.97ms. Allocated memory is still 146.8MB. Free memory was 97.9MB in the beginning and 96.0MB in the end (delta: 1.9MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14394.82ms. Allocated memory was 146.8MB in the beginning and 333.4MB in the end (delta: 186.6MB). Free memory was 96.0MB in the beginning and 154.4MB in the end (delta: -58.4MB). Peak memory consumption was 129.2MB. Max. memory is 16.1GB. * Witness Printer took 100.18ms. Allocated memory is still 333.4MB. Free memory was 154.4MB in the beginning and 150.2MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1253]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1253]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1258]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1258]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1244]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1244]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1242]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1242]: 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 3 procedures, 49 locations, 13 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: 14.3s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 750 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 677 mSDsluCounter, 425 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 395 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1741 IncrementalHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 30 mSDtfsCounter, 1741 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 241 SyntacticMatches, 11 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=743occurred in iteration=10, InterpolantAutomatonStates: 100, 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: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 606 NumberOfCodeBlocks, 606 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 657 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127 SizeOfPredicates, 16 NumberOfNonLiveVariables, 3192 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 26 InterpolantComputations, 12 PerfectInterpolantSequences, 1119/1378 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 22:16:16,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_430e2807-4102-419b-a4ec-314269800f13/bin/uautomizer-verify-bycVGegfSx/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