./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:27,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:27,662 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:07:27,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:27,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:27,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:27,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:27,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:27,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:07:27,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:07:27,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:27,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:27,700 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:27,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:27,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:07:27,702 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:07:27,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:07:27,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:07:27,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:27,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:07:27,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:07:27,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:07:27,706 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:07:27,707 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:07:27,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:07:27,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:27,708 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:27,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:27,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:27,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:07:27,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:27,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:27,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:07:27,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:07:27,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:07:27,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:07:27,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:07:27,714 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:07:27,714 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:07:27,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:07:27,715 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:07:27,716 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_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2023-11-06 22:07:28,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:28,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:28,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:28,070 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:28,070 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:28,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-11-06 22:07:31,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:07:31,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:07:31,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-11-06 22:07:31,482 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/data/6c631e616/c60e8126ebe5458ea0cd3f62a28143a3/FLAGcadaba72f [2023-11-06 22:07:31,497 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/data/6c631e616/c60e8126ebe5458ea0cd3f62a28143a3 [2023-11-06 22:07:31,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:07:31,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:07:31,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:31,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:07:31,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:07:31,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb963c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:31, skipping insertion in model container [2023-11-06 22:07:31,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:31" (1/1) ... [2023-11-06 22:07:31,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:07:32,010 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:07:32,011 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:07:32,011 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:07:32,012 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:07:32,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:32,069 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:07:32,129 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:07:32,136 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:07:32,137 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:07:32,139 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:07:32,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:32,215 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:07:32,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32 WrapperNode [2023-11-06 22:07:32,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:32,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:32,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:07:32,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:07:32,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,293 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 171 [2023-11-06 22:07:32,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:32,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:07:32,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:07:32,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:07:32,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:07:32,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:07:32,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:07:32,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:07:32,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (1/1) ... [2023-11-06 22:07:32,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:32,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:32,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:32,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:07:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-06 22:07:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-06 22:07:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:07:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:07:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:07:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:07:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:07:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:07:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:07:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:07:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:07:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:07:32,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:07:32,455 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:07:32,617 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:07:32,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:07:33,111 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:07:33,122 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:07:33,122 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:07:33,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:33 BoogieIcfgContainer [2023-11-06 22:07:33,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:07:33,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:07:33,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:07:33,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:07:33,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:31" (1/3) ... [2023-11-06 22:07:33,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b14b7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:33, skipping insertion in model container [2023-11-06 22:07:33,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:32" (2/3) ... [2023-11-06 22:07:33,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b14b7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:33, skipping insertion in model container [2023-11-06 22:07:33,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:33" (3/3) ... [2023-11-06 22:07:33,136 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-11-06 22:07:33,145 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:07:33,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:07:33,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:07:33,157 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:07:33,326 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:07:33,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 262 transitions, 532 flow [2023-11-06 22:07:33,545 INFO L124 PetriNetUnfolderBase]: 17/260 cut-off events. [2023-11-06 22:07:33,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:07:33,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 260 events. 17/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 598 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2023-11-06 22:07:33,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 262 transitions, 532 flow [2023-11-06 22:07:33,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 260 transitions, 526 flow [2023-11-06 22:07:33,578 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:07:33,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 260 transitions, 526 flow [2023-11-06 22:07:33,594 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 260 transitions, 526 flow [2023-11-06 22:07:33,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 260 transitions, 526 flow [2023-11-06 22:07:33,647 INFO L124 PetriNetUnfolderBase]: 17/260 cut-off events. [2023-11-06 22:07:33,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:07:33,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 260 events. 17/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 596 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2023-11-06 22:07:33,662 INFO L119 LiptonReduction]: Number of co-enabled transitions 7854 [2023-11-06 22:07:58,573 WARN L293 SmtUtils]: Spent 10.59s on a formula simplification. DAG size of input: 158 DAG size of output: 157 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:08:11,086 WARN L293 SmtUtils]: Spent 10.22s on a formula simplification. DAG size of input: 162 DAG size of output: 160 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:08:23,524 WARN L293 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 157 DAG size of output: 155 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:08:35,276 WARN L293 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 159 DAG size of output: 157 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:08:37,794 INFO L134 LiptonReduction]: Checked pairs total: 7849 [2023-11-06 22:08:37,795 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-11-06 22:08:37,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:08:37,822 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=LoopsAndPotentialCycles, 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;@7b288203, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:08:37,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:08:37,825 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:08:37,825 INFO L124 PetriNetUnfolderBase]: 2/5 cut-off events. [2023-11-06 22:08:37,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:08:37,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:37,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:08:37,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:37,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash 873925, now seen corresponding path program 1 times [2023-11-06 22:08:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:37,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662262754] [2023-11-06 22:08:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:37,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:37,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339066836] [2023-11-06 22:08:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:37,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:37,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:38,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:08:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:38,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:08:38,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:38,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:38,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662262754] [2023-11-06 22:08:38,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:38,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339066836] [2023-11-06 22:08:38,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339066836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:38,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:38,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442057156] [2023-11-06 22:08:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:38,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:38,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:38,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:38,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 553 [2023-11-06 22:08:38,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:38,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:38,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 553 [2023-11-06 22:08:38,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:38,758 INFO L124 PetriNetUnfolderBase]: 436/710 cut-off events. [2023-11-06 22:08:38,759 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 22:08:38,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2781 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-11-06 22:08:38,767 INFO L140 encePairwiseOnDemand]: 544/553 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-06 22:08:38,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-11-06 22:08:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-11-06 22:08:38,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46714888487040385 [2023-11-06 22:08:38,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-11-06 22:08:38,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-11-06 22:08:38,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:38,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-11-06 22:08:38,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:38,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:38,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:38,814 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 775 transitions. [2023-11-06 22:08:38,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-11-06 22:08:38,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:38,820 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-11-06 22:08:38,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-11-06 22:08:38,826 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-06 22:08:38,826 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-11-06 22:08:38,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:38,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:38,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:08:38,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:39,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:08:39,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:39,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash 874138, now seen corresponding path program 1 times [2023-11-06 22:08:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:39,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753129377] [2023-11-06 22:08:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:39,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:39,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627051816] [2023-11-06 22:08:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:39,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:39,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:39,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:39,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:08:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:39,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:08:39,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:39,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:39,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:39,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753129377] [2023-11-06 22:08:39,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627051816] [2023-11-06 22:08:39,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627051816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:39,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:39,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:39,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442327291] [2023-11-06 22:08:39,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:39,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:39,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:39,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 553 [2023-11-06 22:08:39,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:39,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:39,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 553 [2023-11-06 22:08:39,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:39,622 INFO L124 PetriNetUnfolderBase]: 435/708 cut-off events. [2023-11-06 22:08:39,622 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:08:39,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2739 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 703 conditions per place. [2023-11-06 22:08:39,628 INFO L140 encePairwiseOnDemand]: 548/553 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-11-06 22:08:39,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 176 flow [2023-11-06 22:08:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 770 transitions. [2023-11-06 22:08:39,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641350210970464 [2023-11-06 22:08:39,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 770 transitions. [2023-11-06 22:08:39,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 770 transitions. [2023-11-06 22:08:39,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:39,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 770 transitions. [2023-11-06 22:08:39,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 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) [2023-11-06 22:08:39,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:39,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:39,644 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 770 transitions. [2023-11-06 22:08:39,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 176 flow [2023-11-06 22:08:39,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:39,647 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 106 flow [2023-11-06 22:08:39,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-11-06 22:08:39,648 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-11-06 22:08:39,648 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 106 flow [2023-11-06 22:08:39,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:39,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:39,649 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-06 22:08:39,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:39,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:39,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:39,856 INFO L85 PathProgramCache]: Analyzing trace with hash 840046033, now seen corresponding path program 1 times [2023-11-06 22:08:39,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:39,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552359096] [2023-11-06 22:08:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:39,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:39,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:39,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944866728] [2023-11-06 22:08:39,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:39,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:39,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:39,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:39,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:08:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:40,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:08:40,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:40,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:40,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552359096] [2023-11-06 22:08:40,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944866728] [2023-11-06 22:08:40,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944866728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:40,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:40,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108590932] [2023-11-06 22:08:40,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:40,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:40,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:40,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 553 [2023-11-06 22:08:40,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:40,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:40,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 553 [2023-11-06 22:08:40,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:40,410 INFO L124 PetriNetUnfolderBase]: 435/712 cut-off events. [2023-11-06 22:08:40,410 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:08:40,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 712 events. 435/712 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2755 event pairs, 340 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1419. Up to 709 conditions per place. [2023-11-06 22:08:40,415 INFO L140 encePairwiseOnDemand]: 548/553 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-06 22:08:40,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 198 flow [2023-11-06 22:08:40,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:40,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-11-06 22:08:40,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46714888487040385 [2023-11-06 22:08:40,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-11-06 22:08:40,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-11-06 22:08:40,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:40,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-11-06 22:08:40,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:40,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:40,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:40,429 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 106 flow. Second operand 3 states and 775 transitions. [2023-11-06 22:08:40,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 198 flow [2023-11-06 22:08:40,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:40,431 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 114 flow [2023-11-06 22:08:40,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-11-06 22:08:40,432 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-06 22:08:40,433 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 114 flow [2023-11-06 22:08:40,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:40,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:40,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:08:40,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:40,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:40,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:40,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:40,640 INFO L85 PathProgramCache]: Analyzing trace with hash 272445154, now seen corresponding path program 1 times [2023-11-06 22:08:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510773548] [2023-11-06 22:08:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:40,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:40,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508910365] [2023-11-06 22:08:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:40,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:40,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:40,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:40,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:08:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:40,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:08:40,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:40,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:40,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510773548] [2023-11-06 22:08:40,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:40,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508910365] [2023-11-06 22:08:40,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508910365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:40,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:08:40,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-06 22:08:40,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431888937] [2023-11-06 22:08:40,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:40,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:08:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:08:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:08:40,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-11-06 22:08:40,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:40,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:40,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-11-06 22:08:40,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:41,687 INFO L124 PetriNetUnfolderBase]: 437/724 cut-off events. [2023-11-06 22:08:41,687 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:08:41,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 724 events. 437/724 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2830 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1435. Up to 707 conditions per place. [2023-11-06 22:08:41,692 INFO L140 encePairwiseOnDemand]: 546/553 looper letters, 43 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-11-06 22:08:41,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 258 flow [2023-11-06 22:08:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:08:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:08:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1516 transitions. [2023-11-06 22:08:41,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45690174804098854 [2023-11-06 22:08:41,700 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1516 transitions. [2023-11-06 22:08:41,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1516 transitions. [2023-11-06 22:08:41,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:41,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1516 transitions. [2023-11-06 22:08:41,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:41,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:41,718 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:41,719 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 114 flow. Second operand 6 states and 1516 transitions. [2023-11-06 22:08:41,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 258 flow [2023-11-06 22:08:41,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:41,723 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 188 flow [2023-11-06 22:08:41,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-11-06 22:08:41,725 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-11-06 22:08:41,726 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 188 flow [2023-11-06 22:08:41,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:41,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:41,727 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-11-06 22:08:41,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:41,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:41,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:41,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash -258452975, now seen corresponding path program 2 times [2023-11-06 22:08:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:41,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497161850] [2023-11-06 22:08:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:41,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:42,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:42,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008628451] [2023-11-06 22:08:42,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:08:42,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:42,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:42,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:08:42,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:08:42,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:42,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:08:42,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:08:42,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:42,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497161850] [2023-11-06 22:08:42,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008628451] [2023-11-06 22:08:42,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008628451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:42,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:42,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:42,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363518665] [2023-11-06 22:08:42,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:42,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:42,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:42,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 553 [2023-11-06 22:08:42,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:42,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:42,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 553 [2023-11-06 22:08:42,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:42,641 INFO L124 PetriNetUnfolderBase]: 437/722 cut-off events. [2023-11-06 22:08:42,641 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:08:42,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 722 events. 437/722 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2809 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1449. Up to 721 conditions per place. [2023-11-06 22:08:42,647 INFO L140 encePairwiseOnDemand]: 549/553 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-06 22:08:42,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 276 flow [2023-11-06 22:08:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-11-06 22:08:42,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172393007836043 [2023-11-06 22:08:42,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-11-06 22:08:42,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-11-06 22:08:42,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:42,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-11-06 22:08:42,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:42,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:42,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:42,672 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 188 flow. Second operand 3 states and 766 transitions. [2023-11-06 22:08:42,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 276 flow [2023-11-06 22:08:42,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 266 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:42,676 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 188 flow [2023-11-06 22:08:42,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-06 22:08:42,678 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2023-11-06 22:08:42,678 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 188 flow [2023-11-06 22:08:42,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:42,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:42,679 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-11-06 22:08:42,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:42,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:42,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:42,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:42,886 INFO L85 PathProgramCache]: Analyzing trace with hash 577899594, now seen corresponding path program 3 times [2023-11-06 22:08:42,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:42,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381858672] [2023-11-06 22:08:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:42,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:43,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:43,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289160853] [2023-11-06 22:08:43,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:08:43,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:43,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:43,022 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:43,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:08:43,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:08:43,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:43,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:08:43,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:08:43,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381858672] [2023-11-06 22:08:43,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289160853] [2023-11-06 22:08:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289160853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:43,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169629663] [2023-11-06 22:08:43,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:08:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:08:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:08:43,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 553 [2023-11-06 22:08:43,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:43,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:43,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 553 [2023-11-06 22:08:43,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:44,039 INFO L124 PetriNetUnfolderBase]: 436/717 cut-off events. [2023-11-06 22:08:44,040 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-06 22:08:44,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 717 events. 436/717 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2786 event pairs, 340 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1443. Up to 698 conditions per place. [2023-11-06 22:08:44,045 INFO L140 encePairwiseOnDemand]: 545/553 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-11-06 22:08:44,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 294 flow [2023-11-06 22:08:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:08:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:08:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1469 transitions. [2023-11-06 22:08:44,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44273658830620854 [2023-11-06 22:08:44,052 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1469 transitions. [2023-11-06 22:08:44,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1469 transitions. [2023-11-06 22:08:44,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:44,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1469 transitions. [2023-11-06 22:08:44,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:44,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:44,067 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 553.0) internal successors, (3871), 7 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:44,067 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 188 flow. Second operand 6 states and 1469 transitions. [2023-11-06 22:08:44,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 294 flow [2023-11-06 22:08:44,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:44,071 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 193 flow [2023-11-06 22:08:44,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-11-06 22:08:44,072 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-11-06 22:08:44,072 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 193 flow [2023-11-06 22:08:44,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:44,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:44,074 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-11-06 22:08:44,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:44,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:08:44,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:44,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash 577899698, now seen corresponding path program 1 times [2023-11-06 22:08:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:44,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296602529] [2023-11-06 22:08:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:44,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:44,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060094190] [2023-11-06 22:08:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:44,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:44,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:44,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:44,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:08:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:44,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:08:44,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:08:44,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:08:44,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296602529] [2023-11-06 22:08:44,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060094190] [2023-11-06 22:08:44,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060094190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:44,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:08:44,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-06 22:08:44,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053000117] [2023-11-06 22:08:44,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:44,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:08:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:44,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:08:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:08:45,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-11-06 22:08:45,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 193 flow. Second operand has 12 states, 12 states have (on average 244.33333333333334) internal successors, (2932), 12 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:45,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:45,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-11-06 22:08:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:46,361 INFO L124 PetriNetUnfolderBase]: 436/735 cut-off events. [2023-11-06 22:08:46,362 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-11-06 22:08:46,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 735 events. 436/735 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2941 event pairs, 340 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 1469. Up to 706 conditions per place. [2023-11-06 22:08:46,368 INFO L140 encePairwiseOnDemand]: 548/553 looper letters, 43 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2023-11-06 22:08:46,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 407 flow [2023-11-06 22:08:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:08:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:08:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2982 transitions. [2023-11-06 22:08:46,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44936708860759494 [2023-11-06 22:08:46,383 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2982 transitions. [2023-11-06 22:08:46,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2982 transitions. [2023-11-06 22:08:46,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:46,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2982 transitions. [2023-11-06 22:08:46,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 248.5) internal successors, (2982), 12 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:46,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 553.0) internal successors, (7189), 13 states have internal predecessors, (7189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:46,414 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 553.0) internal successors, (7189), 13 states have internal predecessors, (7189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:46,415 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 193 flow. Second operand 12 states and 2982 transitions. [2023-11-06 22:08:46,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 407 flow [2023-11-06 22:08:46,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 401 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:46,422 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 316 flow [2023-11-06 22:08:46,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-11-06 22:08:46,423 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2023-11-06 22:08:46,424 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 316 flow [2023-11-06 22:08:46,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 244.33333333333334) internal successors, (2932), 12 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:46,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:46,426 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-11-06 22:08:46,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:46,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:08:46,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:46,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:46,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1004059218, now seen corresponding path program 2 times [2023-11-06 22:08:46,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:46,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829331206] [2023-11-06 22:08:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:46,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:46,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:46,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750548488] [2023-11-06 22:08:46,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:08:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:46,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:46,838 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:46,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:08:47,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:08:47,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:47,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:08:47,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:08:47,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:08:47,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829331206] [2023-11-06 22:08:47,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750548488] [2023-11-06 22:08:47,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750548488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:47,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:08:47,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-06 22:08:47,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469700562] [2023-11-06 22:08:47,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:47,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:08:47,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:47,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:08:47,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:08:48,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-11-06 22:08:48,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 316 flow. Second operand has 24 states, 24 states have (on average 244.16666666666666) internal successors, (5860), 24 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:48,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:48,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-11-06 22:08:48,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:50,601 INFO L124 PetriNetUnfolderBase]: 436/771 cut-off events. [2023-11-06 22:08:50,601 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2023-11-06 22:08:50,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 771 events. 436/771 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3042 event pairs, 340 based on Foata normal form. 24/518 useless extension candidates. Maximal degree in co-relation 1550. Up to 706 conditions per place. [2023-11-06 22:08:50,609 INFO L140 encePairwiseOnDemand]: 548/553 looper letters, 55 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-11-06 22:08:50,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 784 flow [2023-11-06 22:08:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:08:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:08:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5934 transitions. [2023-11-06 22:08:50,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44710669077757687 [2023-11-06 22:08:50,637 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5934 transitions. [2023-11-06 22:08:50,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5934 transitions. [2023-11-06 22:08:50,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:50,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5934 transitions. [2023-11-06 22:08:50,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 247.25) internal successors, (5934), 24 states have internal predecessors, (5934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:50,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 553.0) internal successors, (13825), 25 states have internal predecessors, (13825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:50,697 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 553.0) internal successors, (13825), 25 states have internal predecessors, (13825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:50,697 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 316 flow. Second operand 24 states and 5934 transitions. [2023-11-06 22:08:50,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 784 flow [2023-11-06 22:08:50,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 716 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-11-06 22:08:50,707 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 529 flow [2023-11-06 22:08:50,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=529, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2023-11-06 22:08:50,708 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2023-11-06 22:08:50,708 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 529 flow [2023-11-06 22:08:50,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 244.16666666666666) internal successors, (5860), 24 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:50,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:50,711 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-11-06 22:08:50,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:50,920 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:50,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1537348206, now seen corresponding path program 3 times [2023-11-06 22:08:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:50,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710797775] [2023-11-06 22:08:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:51,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100147586] [2023-11-06 22:08:51,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:08:51,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:51,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:51,398 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:51,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:08:52,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:08:52,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:52,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:08:52,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-06 22:08:52,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-06 22:08:52,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710797775] [2023-11-06 22:08:52,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:08:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100147586] [2023-11-06 22:08:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100147586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:52,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:08:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:08:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465280985] [2023-11-06 22:08:52,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:52,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:08:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:08:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:08:52,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 553 [2023-11-06 22:08:52,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 529 flow. Second operand has 10 states, 10 states have (on average 236.4) internal successors, (2364), 10 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:52,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:52,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 553 [2023-11-06 22:08:52,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:55,110 INFO L124 PetriNetUnfolderBase]: 438/796 cut-off events. [2023-11-06 22:08:55,110 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2023-11-06 22:08:55,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 796 events. 438/796 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3013 event pairs, 340 based on Foata normal form. 24/544 useless extension candidates. Maximal degree in co-relation 1664. Up to 699 conditions per place. [2023-11-06 22:08:55,120 INFO L140 encePairwiseOnDemand]: 546/553 looper letters, 98 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2023-11-06 22:08:55,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 1227 flow [2023-11-06 22:08:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:08:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:08:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2637 transitions. [2023-11-06 22:08:55,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43350320565510436 [2023-11-06 22:08:55,133 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2637 transitions. [2023-11-06 22:08:55,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2637 transitions. [2023-11-06 22:08:55,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:55,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2637 transitions. [2023-11-06 22:08:55,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 239.72727272727272) internal successors, (2637), 11 states have internal predecessors, (2637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 553.0) internal successors, (6636), 12 states have internal predecessors, (6636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,159 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 553.0) internal successors, (6636), 12 states have internal predecessors, (6636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,160 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 529 flow. Second operand 11 states and 2637 transitions. [2023-11-06 22:08:55,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 111 transitions, 1227 flow [2023-11-06 22:08:55,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 111 transitions, 1080 flow, removed 42 selfloop flow, removed 10 redundant places. [2023-11-06 22:08:55,176 INFO L231 Difference]: Finished difference. Result has 104 places, 69 transitions, 572 flow [2023-11-06 22:08:55,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=572, PETRI_PLACES=104, PETRI_TRANSITIONS=69} [2023-11-06 22:08:55,177 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 64 predicate places. [2023-11-06 22:08:55,177 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 69 transitions, 572 flow [2023-11-06 22:08:55,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 236.4) internal successors, (2364), 10 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:55,178 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 3, 2, 1, 1] [2023-11-06 22:08:55,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:55,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:08:55,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:08:55,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1666295077, now seen corresponding path program 4 times [2023-11-06 22:08:55,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:55,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490594807] [2023-11-06 22:08:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:56,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:08:56,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491845639] [2023-11-06 22:08:56,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:08:56,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:56,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:56,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:56,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:08:58,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:08:58,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:58,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 4184 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:08:58,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 600 proven. 253 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-11-06 22:08:59,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 600 proven. 253 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-11-06 22:09:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490594807] [2023-11-06 22:09:00,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:09:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491845639] [2023-11-06 22:09:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491845639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:00,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:09:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-11-06 22:09:00,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903350594] [2023-11-06 22:09:00,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:00,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:09:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:09:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:09:00,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 553 [2023-11-06 22:09:00,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 69 transitions, 572 flow. Second operand has 32 states, 32 states have (on average 244.1875) internal successors, (7814), 32 states have internal predecessors, (7814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:00,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 553 [2023-11-06 22:09:00,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:03,721 INFO L124 PetriNetUnfolderBase]: 438/828 cut-off events. [2023-11-06 22:09:03,721 INFO L125 PetriNetUnfolderBase]: For 8355/8355 co-relation queries the response was YES. [2023-11-06 22:09:03,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 828 events. 438/828 cut-off events. For 8355/8355 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3058 event pairs, 340 based on Foata normal form. 24/576 useless extension candidates. Maximal degree in co-relation 1973. Up to 709 conditions per place. [2023-11-06 22:09:03,730 INFO L140 encePairwiseOnDemand]: 549/553 looper letters, 63 selfloop transitions, 39 changer transitions 0/102 dead transitions. [2023-11-06 22:09:03,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 102 transitions, 1175 flow [2023-11-06 22:09:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:09:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-06 22:09:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7876 transitions. [2023-11-06 22:09:03,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44507233273056057 [2023-11-06 22:09:03,765 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7876 transitions. [2023-11-06 22:09:03,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7876 transitions. [2023-11-06 22:09:03,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:03,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7876 transitions. [2023-11-06 22:09:03,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 246.125) internal successors, (7876), 32 states have internal predecessors, (7876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 553.0) internal successors, (18249), 33 states have internal predecessors, (18249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,842 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 553.0) internal successors, (18249), 33 states have internal predecessors, (18249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,842 INFO L175 Difference]: Start difference. First operand has 104 places, 69 transitions, 572 flow. Second operand 32 states and 7876 transitions. [2023-11-06 22:09:03,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 102 transitions, 1175 flow [2023-11-06 22:09:03,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 102 transitions, 1159 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:03,867 INFO L231 Difference]: Finished difference. Result has 141 places, 78 transitions, 773 flow [2023-11-06 22:09:03,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=773, PETRI_PLACES=141, PETRI_TRANSITIONS=78} [2023-11-06 22:09:03,870 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 101 predicate places. [2023-11-06 22:09:03,870 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 78 transitions, 773 flow [2023-11-06 22:09:03,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 244.1875) internal successors, (7814), 32 states have internal predecessors, (7814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:03,873 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2023-11-06 22:09:03,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:04,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:04,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:09:04,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:04,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1464085029, now seen corresponding path program 5 times [2023-11-06 22:09:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155249749] [2023-11-06 22:09:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:04,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:05,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:09:05,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277785350] [2023-11-06 22:09:05,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:09:05,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:09:05,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:05,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:09:05,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2a5eef-8041-464a-a5dc-10c0cb5ca443/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process