./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/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_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/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_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:35,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:35,322 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:48:35,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:35,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:35,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:35,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:35,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:35,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:35,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:35,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:35,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:35,386 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:35,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:35,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:48:35,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:35,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:35,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:35,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:35,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:48:35,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:35,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:48:35,391 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:48:35,391 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:48:35,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:35,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:48:35,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:35,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:35,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:35,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:35,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:35,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:35,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:35,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:48:35,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:35,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:35,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:35,396 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:48:35,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:35,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:35,397 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:35,397 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_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2023-11-06 22:48:35,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:35,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:35,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:35,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:35,691 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:35,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-06 22:48:38,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:39,248 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:39,249 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-06 22:48:39,277 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/data/7947d510b/9e89732e75d7436dbe3235daf68132c0/FLAGb1aebc2ae [2023-11-06 22:48:39,303 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/data/7947d510b/9e89732e75d7436dbe3235daf68132c0 [2023-11-06 22:48:39,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:39,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:39,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:39,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:39,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:39,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71657e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:39, skipping insertion in model container [2023-11-06 22:48:39,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:39" (1/1) ... [2023-11-06 22:48:39,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:40,044 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:48:40,045 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:48:40,045 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:48:40,046 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:48:40,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:40,108 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:40,172 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:48:40,172 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:48:40,173 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:48:40,176 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:48:40,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:40,303 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:40,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40 WrapperNode [2023-11-06 22:48:40,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:40,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:40,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:40,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:40,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,375 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 140 [2023-11-06 22:48:40,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:40,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:40,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:40,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:40,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:40,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:40,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:40,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:40,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (1/1) ... [2023-11-06 22:48:40,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:40,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:40,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:40,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-06 22:48:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-06 22:48:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:48:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:48:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:48:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:48:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:48:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:48:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:48:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:48:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:40,536 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 22:48:40,781 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:40,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:41,239 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:41,248 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:41,248 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:48:41,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:41 BoogieIcfgContainer [2023-11-06 22:48:41,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:41,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:41,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:41,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:41,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:39" (1/3) ... [2023-11-06 22:48:41,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1d9ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:41, skipping insertion in model container [2023-11-06 22:48:41,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:40" (2/3) ... [2023-11-06 22:48:41,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1d9ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:41, skipping insertion in model container [2023-11-06 22:48:41,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:41" (3/3) ... [2023-11-06 22:48:41,261 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2023-11-06 22:48:41,270 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:48:41,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:41,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:48:41,281 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:48:41,427 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:48:41,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 218 transitions, 444 flow [2023-11-06 22:48:41,564 INFO L124 PetriNetUnfolderBase]: 15/216 cut-off events. [2023-11-06 22:48:41,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:41,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 216 events. 15/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 529 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2023-11-06 22:48:41,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 218 transitions, 444 flow [2023-11-06 22:48:41,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 216 transitions, 438 flow [2023-11-06 22:48:41,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:48:41,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 216 transitions, 438 flow [2023-11-06 22:48:41,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 216 transitions, 438 flow [2023-11-06 22:48:41,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 216 transitions, 438 flow [2023-11-06 22:48:41,676 INFO L124 PetriNetUnfolderBase]: 15/216 cut-off events. [2023-11-06 22:48:41,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:41,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 216 events. 15/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 529 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2023-11-06 22:48:41,689 INFO L119 LiptonReduction]: Number of co-enabled transitions 7854 [2023-11-06 22:49:07,663 WARN L293 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 148 DAG size of output: 147 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:49:17,697 WARN L293 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 150 DAG size of output: 148 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:49:27,814 WARN L293 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 147 DAG size of output: 145 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:49:42,126 WARN L293 SmtUtils]: Spent 12.15s on a formula simplification. DAG size of input: 147 DAG size of output: 145 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:49:45,252 INFO L134 LiptonReduction]: Checked pairs total: 7775 [2023-11-06 22:49:45,252 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-11-06 22:49:45,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:49:45,273 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;@16d52b7d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:49:45,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:49:45,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:49:45,277 INFO L124 PetriNetUnfolderBase]: 2/6 cut-off events. [2023-11-06 22:49:45,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:49:45,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:45,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:49:45,279 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 22:49:45,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:45,285 INFO L85 PathProgramCache]: Analyzing trace with hash 734490, now seen corresponding path program 1 times [2023-11-06 22:49:45,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:45,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314476978] [2023-11-06 22:49:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:45,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:45,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:45,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337206183] [2023-11-06 22:49:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:45,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:45,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:45,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:45,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:49:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:45,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:49:45,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:45,604 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 22:49:45,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:45,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314476978] [2023-11-06 22:49:45,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:45,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337206183] [2023-11-06 22:49:45,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337206183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:45,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:45,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:49:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256879445] [2023-11-06 22:49:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:45,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 449 [2023-11-06 22:49:45,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 22:49:45,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:45,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 449 [2023-11-06 22:49:45,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:46,204 INFO L124 PetriNetUnfolderBase]: 436/710 cut-off events. [2023-11-06 22:49:46,204 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:49:46,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2783 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 22:49:46,216 INFO L140 encePairwiseOnDemand]: 440/449 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-06 22:49:46,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-11-06 22:49:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-11-06 22:49:46,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4795842613214551 [2023-11-06 22:49:46,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-11-06 22:49:46,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-11-06 22:49:46,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:46,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-11-06 22:49:46,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 22:49:46,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:49:46,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:49:46,260 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 646 transitions. [2023-11-06 22:49:46,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-11-06 22:49:46,264 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 22:49:46,266 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-11-06 22:49:46,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, 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 22:49:46,272 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-06 22:49:46,273 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-11-06 22:49:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 22:49:46,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:46,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:49:46,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:46,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:46,486 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 22:49:46,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash 734640, now seen corresponding path program 1 times [2023-11-06 22:49:46,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:46,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784051970] [2023-11-06 22:49:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:46,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:46,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:46,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769369219] [2023-11-06 22:49:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:46,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:46,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:46,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:49:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:46,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:49:46,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:46,765 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 22:49:46,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:46,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:46,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784051970] [2023-11-06 22:49:46,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:46,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769369219] [2023-11-06 22:49:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769369219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:46,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:46,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:49:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633361012] [2023-11-06 22:49:46,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:46,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:46,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 449 [2023-11-06 22:49:46,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 22:49:46,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:46,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 449 [2023-11-06 22:49:46,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:47,088 INFO L124 PetriNetUnfolderBase]: 435/708 cut-off events. [2023-11-06 22:49:47,089 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:49:47,090 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 61. Compared 2784 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 22:49:47,094 INFO L140 encePairwiseOnDemand]: 444/449 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-11-06 22:49:47,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 176 flow [2023-11-06 22:49:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-11-06 22:49:47,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758723088344469 [2023-11-06 22:49:47,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-11-06 22:49:47,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-11-06 22:49:47,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:47,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-11-06 22:49:47,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 22:49:47,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:49:47,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:49:47,108 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 641 transitions. [2023-11-06 22:49:47,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 176 flow [2023-11-06 22:49:47,109 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 22:49:47,110 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 106 flow [2023-11-06 22:49:47,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, 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 22:49:47,111 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-11-06 22:49:47,111 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 106 flow [2023-11-06 22:49:47,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states 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 22:49:47,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:47,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-06 22:49:47,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:49:47,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:47,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:49:47,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:47,319 INFO L85 PathProgramCache]: Analyzing trace with hash 705980784, now seen corresponding path program 1 times [2023-11-06 22:49:47,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:47,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895338309] [2023-11-06 22:49:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:47,510 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 22:49:47,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:47,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895338309] [2023-11-06 22:49:47,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895338309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:47,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:47,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:47,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004825837] [2023-11-06 22:49:47,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:47,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:47,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:47,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 449 [2023-11-06 22:49:47,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 22:49:47,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:47,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 449 [2023-11-06 22:49:47,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:47,860 INFO L124 PetriNetUnfolderBase]: 435/710 cut-off events. [2023-11-06 22:49:47,861 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:49:47,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 710 events. 435/710 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2775 event pairs, 340 based on Foata normal form. 3/434 useless extension candidates. Maximal degree in co-relation 1419. Up to 709 conditions per place. [2023-11-06 22:49:47,866 INFO L140 encePairwiseOnDemand]: 442/449 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-11-06 22:49:47,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 186 flow [2023-11-06 22:49:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-11-06 22:49:47,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47512991833704527 [2023-11-06 22:49:47,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-11-06 22:49:47,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-11-06 22:49:47,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:47,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-11-06 22:49:47,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:49:47,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:49:47,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:49:47,880 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 106 flow. Second operand 3 states and 640 transitions. [2023-11-06 22:49:47,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 186 flow [2023-11-06 22:49:47,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:47,882 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 118 flow [2023-11-06 22:49:47,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, 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=118, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-11-06 22:49:47,883 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-06 22:49:47,884 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 118 flow [2023-11-06 22:49:47,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 22:49:47,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:47,885 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-06 22:49:47,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:49:47,885 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 22:49:47,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:47,886 INFO L85 PathProgramCache]: Analyzing trace with hash -129242353, now seen corresponding path program 1 times [2023-11-06 22:49:47,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:47,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076016312] [2023-11-06 22:49:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:47,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:47,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:47,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964596104] [2023-11-06 22:49:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:47,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:47,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:47,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:47,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:49:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:48,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:49:48,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:48,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:48,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:48,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076016312] [2023-11-06 22:49:48,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:48,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964596104] [2023-11-06 22:49:48,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964596104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:48,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:48,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-06 22:49:48,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42682313] [2023-11-06 22:49:48,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:48,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:48,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 449 [2023-11-06 22:49:48,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 201.66666666666666) internal successors, (1210), 6 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 22:49:48,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:48,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 449 [2023-11-06 22:49:48,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:48,885 INFO L124 PetriNetUnfolderBase]: 437/722 cut-off events. [2023-11-06 22:49:48,885 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:49:48,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1513 conditions, 722 events. 437/722 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2822 event pairs, 340 based on Foata normal form. 3/442 useless extension candidates. Maximal degree in co-relation 1435. Up to 707 conditions per place. [2023-11-06 22:49:48,891 INFO L140 encePairwiseOnDemand]: 442/449 looper letters, 41 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2023-11-06 22:49:48,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 262 flow [2023-11-06 22:49:48,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:49:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:49:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1256 transitions. [2023-11-06 22:49:48,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662212323682257 [2023-11-06 22:49:48,898 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1256 transitions. [2023-11-06 22:49:48,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1256 transitions. [2023-11-06 22:49:48,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:48,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1256 transitions. [2023-11-06 22:49:48,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states 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 22:49:48,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 22:49:48,913 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 22:49:48,913 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 118 flow. Second operand 6 states and 1256 transitions. [2023-11-06 22:49:48,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 262 flow [2023-11-06 22:49:48,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 258 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:48,916 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 194 flow [2023-11-06 22:49:48,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=114, 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=194, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-11-06 22:49:48,917 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-11-06 22:49:48,917 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 194 flow [2023-11-06 22:49:48,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 201.66666666666666) internal successors, (1210), 6 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 22:49:48,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:48,919 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-11-06 22:49:48,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:49:49,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:49,126 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 22:49:49,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash 65075419, now seen corresponding path program 2 times [2023-11-06 22:49:49,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:49,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532632304] [2023-11-06 22:49:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:49,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:49,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:49,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583580233] [2023-11-06 22:49:49,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:49:49,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:49,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:49,259 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:49,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:49:49,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:49:49,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:49:49,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:49:49,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:49,672 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 22:49:49,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:49,748 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 22:49:49,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532632304] [2023-11-06 22:49:49,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583580233] [2023-11-06 22:49:49,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583580233] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:49,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:49,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-06 22:49:49,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521136814] [2023-11-06 22:49:49,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:49,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:49:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:49:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:49:49,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 449 [2023-11-06 22:49:49,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 194 flow. Second operand has 12 states, 12 states have (on average 201.33333333333334) internal successors, (2416), 12 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 22:49:49,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:49,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 449 [2023-11-06 22:49:49,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:51,142 INFO L124 PetriNetUnfolderBase]: 437/746 cut-off events. [2023-11-06 22:49:51,142 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2023-11-06 22:49:51,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 746 events. 437/746 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3034 event pairs, 340 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 1452. Up to 707 conditions per place. [2023-11-06 22:49:51,148 INFO L140 encePairwiseOnDemand]: 442/449 looper letters, 53 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2023-11-06 22:49:51,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 514 flow [2023-11-06 22:49:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:49:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:49:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2483 transitions. [2023-11-06 22:49:51,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46083890126206384 [2023-11-06 22:49:51,158 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2483 transitions. [2023-11-06 22:49:51,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2483 transitions. [2023-11-06 22:49:51,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:51,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2483 transitions. [2023-11-06 22:49:51,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 206.91666666666666) internal successors, (2483), 12 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states 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 22:49:51,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states 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 22:49:51,183 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states 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 22:49:51,183 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 194 flow. Second operand 12 states and 2483 transitions. [2023-11-06 22:49:51,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 514 flow [2023-11-06 22:49:51,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:51,189 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 346 flow [2023-11-06 22:49:51,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2023-11-06 22:49:51,190 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-11-06 22:49:51,191 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 346 flow [2023-11-06 22:49:51,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 201.33333333333334) internal successors, (2416), 12 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 22:49:51,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:51,192 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-11-06 22:49:51,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:51,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:51,399 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 22:49:51,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash -88077221, now seen corresponding path program 3 times [2023-11-06 22:49:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:51,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814288180] [2023-11-06 22:49:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:51,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:51,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:51,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667689799] [2023-11-06 22:49:51,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:49:51,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:51,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:51,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:51,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:49:52,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:49:52,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:49:52,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:49:52,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:49:52,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:52,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:52,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814288180] [2023-11-06 22:49:52,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:52,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667689799] [2023-11-06 22:49:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667689799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:52,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:52,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:49:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388370997] [2023-11-06 22:49:52,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:52,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:52,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:52,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 449 [2023-11-06 22:49:52,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 196.16666666666666) internal successors, (1177), 6 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 22:49:52,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:52,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 449 [2023-11-06 22:49:52,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:53,111 INFO L124 PetriNetUnfolderBase]: 436/735 cut-off events. [2023-11-06 22:49:53,111 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-06 22:49:53,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 735 events. 436/735 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2921 event pairs, 340 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 1521. Up to 698 conditions per place. [2023-11-06 22:49:53,117 INFO L140 encePairwiseOnDemand]: 441/449 looper letters, 53 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2023-11-06 22:49:53,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 522 flow [2023-11-06 22:49:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:49:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:49:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2023-11-06 22:49:53,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44951744617668893 [2023-11-06 22:49:53,124 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2023-11-06 22:49:53,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2023-11-06 22:49:53,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:53,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2023-11-06 22:49:53,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states 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 22:49:53,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 22:49:53,136 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 22:49:53,136 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 346 flow. Second operand 6 states and 1211 transitions. [2023-11-06 22:49:53,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 522 flow [2023-11-06 22:49:53,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 500 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 22:49:53,144 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 313 flow [2023-11-06 22:49:53,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-11-06 22:49:53,145 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2023-11-06 22:49:53,145 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 313 flow [2023-11-06 22:49:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.16666666666666) internal successors, (1177), 6 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 22:49:53,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:53,146 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-11-06 22:49:53,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:53,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:49:53,352 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 22:49:53,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash -88077180, now seen corresponding path program 1 times [2023-11-06 22:49:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673441085] [2023-11-06 22:49:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:53,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:53,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951713499] [2023-11-06 22:49:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:53,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:53,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:53,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:49:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:54,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:49:54,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:54,432 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 22:49:54,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:54,681 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 22:49:54,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673441085] [2023-11-06 22:49:54,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:54,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951713499] [2023-11-06 22:49:54,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951713499] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:54,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:54,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-06 22:49:54,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295304436] [2023-11-06 22:49:54,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:54,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:49:54,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:49:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:49:55,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 449 [2023-11-06 22:49:55,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 313 flow. Second operand has 24 states, 24 states have (on average 201.16666666666666) internal successors, (4828), 24 states have internal predecessors, (4828), 0 states have call successors, (0), 0 states 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 22:49:55,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:55,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 449 [2023-11-06 22:49:55,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:57,084 INFO L124 PetriNetUnfolderBase]: 436/771 cut-off events. [2023-11-06 22:49:57,084 INFO L125 PetriNetUnfolderBase]: For 1802/1802 co-relation queries the response was YES. [2023-11-06 22:49:57,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 771 events. 436/771 cut-off events. For 1802/1802 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2996 event pairs, 340 based on Foata normal form. 24/518 useless extension candidates. Maximal degree in co-relation 1539. Up to 706 conditions per place. [2023-11-06 22:49:57,090 INFO L140 encePairwiseOnDemand]: 444/449 looper letters, 55 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-11-06 22:49:57,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 774 flow [2023-11-06 22:49:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:49:57,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:49:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4902 transitions. [2023-11-06 22:49:57,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548997772828508 [2023-11-06 22:49:57,106 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4902 transitions. [2023-11-06 22:49:57,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4902 transitions. [2023-11-06 22:49:57,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:57,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4902 transitions. [2023-11-06 22:49:57,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 204.25) internal successors, (4902), 24 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states 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 22:49:57,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 449.0) internal successors, (11225), 25 states have internal predecessors, (11225), 0 states have call successors, (0), 0 states 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 22:49:57,145 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 449.0) internal successors, (11225), 25 states have internal predecessors, (11225), 0 states have call successors, (0), 0 states 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 22:49:57,146 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 313 flow. Second operand 24 states and 4902 transitions. [2023-11-06 22:49:57,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 81 transitions, 774 flow [2023-11-06 22:49:57,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 81 transitions, 768 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:57,153 INFO L231 Difference]: Finished difference. Result has 101 places, 63 transitions, 549 flow [2023-11-06 22:49:57,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=549, PETRI_PLACES=101, PETRI_TRANSITIONS=63} [2023-11-06 22:49:57,154 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2023-11-06 22:49:57,154 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 63 transitions, 549 flow [2023-11-06 22:49:57,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 201.16666666666666) internal successors, (4828), 24 states have internal predecessors, (4828), 0 states have call successors, (0), 0 states 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 22:49:57,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:57,157 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-11-06 22:49:57,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:57,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:49:57,365 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 22:49:57,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 859853700, now seen corresponding path program 2 times [2023-11-06 22:49:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:57,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157741564] [2023-11-06 22:49:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:57,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:57,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:49:57,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186989214] [2023-11-06 22:49:57,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:49:57,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:57,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:57,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:57,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:49:59,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:49:59,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:49:59,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:49:59,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:59,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:49:59,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:59,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157741564] [2023-11-06 22:49:59,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:49:59,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186989214] [2023-11-06 22:49:59,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186989214] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:59,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:59,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-11-06 22:49:59,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23099387] [2023-11-06 22:49:59,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:59,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:49:59,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:49:59,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:50:00,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 449 [2023-11-06 22:50:00,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 63 transitions, 549 flow. Second operand has 32 states, 32 states have (on average 201.15625) internal successors, (6437), 32 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states 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 22:50:00,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:00,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 449 [2023-11-06 22:50:00,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:02,805 INFO L124 PetriNetUnfolderBase]: 436/795 cut-off events. [2023-11-06 22:50:02,806 INFO L125 PetriNetUnfolderBase]: For 4959/4959 co-relation queries the response was YES. [2023-11-06 22:50:02,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 795 events. 436/795 cut-off events. For 4959/4959 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3031 event pairs, 340 based on Foata normal form. 16/534 useless extension candidates. Maximal degree in co-relation 1694. Up to 706 conditions per place. [2023-11-06 22:50:02,812 INFO L140 encePairwiseOnDemand]: 444/449 looper letters, 63 selfloop transitions, 34 changer transitions 0/97 dead transitions. [2023-11-06 22:50:02,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 97 transitions, 1179 flow [2023-11-06 22:50:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:50:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-06 22:50:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6510 transitions. [2023-11-06 22:50:02,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530902004454343 [2023-11-06 22:50:02,834 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6510 transitions. [2023-11-06 22:50:02,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6510 transitions. [2023-11-06 22:50:02,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:02,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6510 transitions. [2023-11-06 22:50:02,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 203.4375) internal successors, (6510), 32 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states 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 22:50:02,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 449.0) internal successors, (14817), 33 states have internal predecessors, (14817), 0 states have call successors, (0), 0 states 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 22:50:02,912 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 449.0) internal successors, (14817), 33 states have internal predecessors, (14817), 0 states have call successors, (0), 0 states 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 22:50:02,912 INFO L175 Difference]: Start difference. First operand has 101 places, 63 transitions, 549 flow. Second operand 32 states and 6510 transitions. [2023-11-06 22:50:02,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 97 transitions, 1179 flow [2023-11-06 22:50:02,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 97 transitions, 1117 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-11-06 22:50:02,930 INFO L231 Difference]: Finished difference. Result has 131 places, 72 transitions, 727 flow [2023-11-06 22:50:02,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=727, PETRI_PLACES=131, PETRI_TRANSITIONS=72} [2023-11-06 22:50:02,933 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 91 predicate places. [2023-11-06 22:50:02,933 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 72 transitions, 727 flow [2023-11-06 22:50:02,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 201.15625) internal successors, (6437), 32 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states 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 22:50:02,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:02,936 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 2, 1, 1, 1] [2023-11-06 22:50:02,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:03,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:50:03,146 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 22:50:03,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:03,146 INFO L85 PathProgramCache]: Analyzing trace with hash 301116804, now seen corresponding path program 3 times [2023-11-06 22:50:03,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:03,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705355022] [2023-11-06 22:50:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:03,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:03,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:50:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9876833] [2023-11-06 22:50:03,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:50:03,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:03,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:03,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:50:03,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:50:04,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:50:04,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:50:04,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:50:04,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-11-06 22:50:04,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-11-06 22:50:05,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:05,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705355022] [2023-11-06 22:50:05,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:50:05,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9876833] [2023-11-06 22:50:05,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9876833] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:05,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:05,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-06 22:50:05,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407430986] [2023-11-06 22:50:05,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:05,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:50:05,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:05,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:50:05,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:50:05,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 449 [2023-11-06 22:50:05,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 72 transitions, 727 flow. Second operand has 6 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 22:50:05,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:05,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 449 [2023-11-06 22:50:05,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:07,004 INFO L124 PetriNetUnfolderBase]: 436/792 cut-off events. [2023-11-06 22:50:07,004 INFO L125 PetriNetUnfolderBase]: For 1240/1240 co-relation queries the response was YES. [2023-11-06 22:50:07,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2193 conditions, 792 events. 436/792 cut-off events. For 1240/1240 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3013 event pairs, 340 based on Foata normal form. 3/518 useless extension candidates. Maximal degree in co-relation 1800. Up to 784 conditions per place. [2023-11-06 22:50:07,013 INFO L140 encePairwiseOnDemand]: 445/449 looper letters, 63 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-11-06 22:50:07,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 71 transitions, 861 flow [2023-11-06 22:50:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:50:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:50:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1201 transitions. [2023-11-06 22:50:07,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44580549368968075 [2023-11-06 22:50:07,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1201 transitions. [2023-11-06 22:50:07,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1201 transitions. [2023-11-06 22:50:07,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:07,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1201 transitions. [2023-11-06 22:50:07,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 22:50:07,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 22:50:07,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 22:50:07,030 INFO L175 Difference]: Start difference. First operand has 131 places, 72 transitions, 727 flow. Second operand 6 states and 1201 transitions. [2023-11-06 22:50:07,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 71 transitions, 861 flow [2023-11-06 22:50:07,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 71 transitions, 791 flow, removed 7 selfloop flow, removed 23 redundant places. [2023-11-06 22:50:07,052 INFO L231 Difference]: Finished difference. Result has 113 places, 71 transitions, 665 flow [2023-11-06 22:50:07,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=665, PETRI_PLACES=113, PETRI_TRANSITIONS=71} [2023-11-06 22:50:07,053 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2023-11-06 22:50:07,053 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 71 transitions, 665 flow [2023-11-06 22:50:07,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 22:50:07,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:07,054 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 2, 1, 1, 1] [2023-11-06 22:50:07,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:07,262 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 22:50:07,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1612047058, now seen corresponding path program 4 times [2023-11-06 22:50:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:07,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934064240] [2023-11-06 22:50:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:07,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:07,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:50:07,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121022321] [2023-11-06 22:50:07,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:50:07,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:07,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:07,864 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:50:07,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:50:14,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:50:14,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:50:14,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:50:14,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-11-06 22:50:14,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-11-06 22:50:24,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:24,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934064240] [2023-11-06 22:50:24,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:50:24,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121022321] [2023-11-06 22:50:24,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121022321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:24,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:24,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:50:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643260047] [2023-11-06 22:50:24,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:24,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:50:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:50:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2023-11-06 22:50:27,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:50:29,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:50:29,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 449 [2023-11-06 22:50:29,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 71 transitions, 665 flow. Second operand has 6 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states 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 22:50:29,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:29,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 449 [2023-11-06 22:50:29,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:35,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:50:35,235 INFO L124 PetriNetUnfolderBase]: 437/799 cut-off events. [2023-11-06 22:50:35,235 INFO L125 PetriNetUnfolderBase]: For 2053/2053 co-relation queries the response was YES. [2023-11-06 22:50:35,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 799 events. 437/799 cut-off events. For 2053/2053 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2832 event pairs, 340 based on Foata normal form. 55/578 useless extension candidates. Maximal degree in co-relation 1628. Up to 699 conditions per place. [2023-11-06 22:50:35,243 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 124 selfloop transitions, 7 changer transitions 0/131 dead transitions. [2023-11-06 22:50:35,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 131 transitions, 1495 flow [2023-11-06 22:50:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:50:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:50:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1228 transitions. [2023-11-06 22:50:35,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45582776540460285 [2023-11-06 22:50:35,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1228 transitions. [2023-11-06 22:50:35,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1228 transitions. [2023-11-06 22:50:35,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:35,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1228 transitions. [2023-11-06 22:50:35,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.66666666666666) internal successors, (1228), 6 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 22:50:35,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 22:50:35,257 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 22:50:35,257 INFO L175 Difference]: Start difference. First operand has 113 places, 71 transitions, 665 flow. Second operand 6 states and 1228 transitions. [2023-11-06 22:50:35,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 131 transitions, 1495 flow [2023-11-06 22:50:35,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 131 transitions, 943 flow, removed 237 selfloop flow, removed 12 redundant places. [2023-11-06 22:50:35,282 INFO L231 Difference]: Finished difference. Result has 105 places, 69 transitions, 439 flow [2023-11-06 22:50:35,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=105, PETRI_TRANSITIONS=69} [2023-11-06 22:50:35,283 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2023-11-06 22:50:35,283 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 69 transitions, 439 flow [2023-11-06 22:50:35,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states 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 22:50:35,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:35,284 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:35,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:35,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:50:35,503 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:50:35,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash 858902015, now seen corresponding path program 1 times [2023-11-06 22:50:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:35,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492153599] [2023-11-06 22:50:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:35,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:36,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:50:36,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005395077] [2023-11-06 22:50:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:36,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:36,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:36,746 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:50:36,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:50:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:40,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 5451 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:50:40,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-11-06 22:50:40,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-11-06 22:50:40,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:40,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492153599] [2023-11-06 22:50:40,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:50:40,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005395077] [2023-11-06 22:50:40,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005395077] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:50:40,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:50:40,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-06 22:50:40,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539325600] [2023-11-06 22:50:40,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:50:40,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:50:40,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:40,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:50:40,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:50:41,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 449 [2023-11-06 22:50:41,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 69 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 202.625) internal successors, (1621), 8 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states 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 22:50:41,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:41,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 449 [2023-11-06 22:50:41,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:42,178 INFO L124 PetriNetUnfolderBase]: 439/897 cut-off events. [2023-11-06 22:50:42,178 INFO L125 PetriNetUnfolderBase]: For 3122/3122 co-relation queries the response was YES. [2023-11-06 22:50:42,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 897 events. 439/897 cut-off events. For 3122/3122 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2711 event pairs, 340 based on Foata normal form. 4/625 useless extension candidates. Maximal degree in co-relation 1546. Up to 699 conditions per place. [2023-11-06 22:50:42,190 INFO L140 encePairwiseOnDemand]: 445/449 looper letters, 221 selfloop transitions, 8 changer transitions 0/229 dead transitions. [2023-11-06 22:50:42,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 229 transitions, 1779 flow [2023-11-06 22:50:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:50:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:50:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1653 transitions. [2023-11-06 22:50:42,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601893095768374 [2023-11-06 22:50:42,195 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1653 transitions. [2023-11-06 22:50:42,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1653 transitions. [2023-11-06 22:50:42,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:42,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1653 transitions. [2023-11-06 22:50:42,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 206.625) internal successors, (1653), 8 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states 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 22:50:42,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 449.0) internal successors, (4041), 9 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states 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 22:50:42,209 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 449.0) internal successors, (4041), 9 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states 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 22:50:42,209 INFO L175 Difference]: Start difference. First operand has 105 places, 69 transitions, 439 flow. Second operand 8 states and 1653 transitions. [2023-11-06 22:50:42,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 229 transitions, 1779 flow [2023-11-06 22:50:42,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 229 transitions, 1775 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:50:42,229 INFO L231 Difference]: Finished difference. Result has 114 places, 72 transitions, 676 flow [2023-11-06 22:50:42,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=676, PETRI_PLACES=114, PETRI_TRANSITIONS=72} [2023-11-06 22:50:42,230 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 74 predicate places. [2023-11-06 22:50:42,231 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 72 transitions, 676 flow [2023-11-06 22:50:42,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 202.625) internal successors, (1621), 8 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states 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 22:50:42,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:42,232 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:42,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:42,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:42,447 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:50:42,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1649916331, now seen corresponding path program 2 times [2023-11-06 22:50:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624747675] [2023-11-06 22:50:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:46,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:50:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485156848] [2023-11-06 22:50:46,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:50:46,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:46,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:46,045 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:50:46,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:50:52,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:50:52,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:50:52,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:50:52,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:50:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2023-11-06 22:50:52,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:50:52,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624747675] [2023-11-06 22:50:52,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:50:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485156848] [2023-11-06 22:50:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485156848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:52,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:52,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:50:52,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295108571] [2023-11-06 22:50:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:52,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:52,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:52,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 449 [2023-11-06 22:50:52,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 72 transitions, 676 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 22:50:52,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:52,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 449 [2023-11-06 22:50:52,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:53,009 INFO L124 PetriNetUnfolderBase]: 402/836 cut-off events. [2023-11-06 22:50:53,010 INFO L125 PetriNetUnfolderBase]: For 3429/3429 co-relation queries the response was YES. [2023-11-06 22:50:53,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 836 events. 402/836 cut-off events. For 3429/3429 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2796 event pairs, 10 based on Foata normal form. 0/596 useless extension candidates. Maximal degree in co-relation 1426. Up to 597 conditions per place. [2023-11-06 22:50:53,017 INFO L140 encePairwiseOnDemand]: 447/449 looper letters, 85 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-11-06 22:50:53,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 86 transitions, 878 flow [2023-11-06 22:50:53,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-11-06 22:50:53,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48997772828507796 [2023-11-06 22:50:53,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-11-06 22:50:53,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-11-06 22:50:53,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:53,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-11-06 22:50:53,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 22:50:53,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:50:53,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:50:53,026 INFO L175 Difference]: Start difference. First operand has 114 places, 72 transitions, 676 flow. Second operand 3 states and 660 transitions. [2023-11-06 22:50:53,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 86 transitions, 878 flow [2023-11-06 22:50:53,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 86 transitions, 874 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:50:53,044 INFO L231 Difference]: Finished difference. Result has 113 places, 71 transitions, 672 flow [2023-11-06 22:50:53,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=113, PETRI_TRANSITIONS=71} [2023-11-06 22:50:53,045 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2023-11-06 22:50:53,045 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 71 transitions, 672 flow [2023-11-06 22:50:53,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 22:50:53,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:53,046 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:53,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:50:53,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:50:53,258 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:50:53,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1649916360, now seen corresponding path program 1 times [2023-11-06 22:50:53,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:53,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156154867] [2023-11-06 22:50:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:53,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:56,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:50:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026741166] [2023-11-06 22:50:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:56,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:50:56,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:56,289 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:50:56,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:51:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:06,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 16139 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:51:06,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-11-06 22:51:06,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2023-11-06 22:51:07,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156154867] [2023-11-06 22:51:07,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:51:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026741166] [2023-11-06 22:51:07,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026741166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:07,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:07,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-11-06 22:51:07,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602547244] [2023-11-06 22:51:07,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:07,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:51:07,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:51:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:51:07,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 449 [2023-11-06 22:51:07,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 71 transitions, 672 flow. Second operand has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states 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 22:51:07,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:07,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 449 [2023-11-06 22:51:07,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:08,676 INFO L124 PetriNetUnfolderBase]: 406/968 cut-off events. [2023-11-06 22:51:08,677 INFO L125 PetriNetUnfolderBase]: For 5781/5781 co-relation queries the response was YES. [2023-11-06 22:51:08,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 968 events. 406/968 cut-off events. For 5781/5781 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2401 event pairs, 307 based on Foata normal form. 4/732 useless extension candidates. Maximal degree in co-relation 1490. Up to 638 conditions per place. [2023-11-06 22:51:08,684 INFO L140 encePairwiseOnDemand]: 445/449 looper letters, 348 selfloop transitions, 12 changer transitions 0/360 dead transitions. [2023-11-06 22:51:08,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 360 transitions, 2935 flow [2023-11-06 22:51:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:51:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:51:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2464 transitions. [2023-11-06 22:51:08,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573125463994061 [2023-11-06 22:51:08,688 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2464 transitions. [2023-11-06 22:51:08,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2464 transitions. [2023-11-06 22:51:08,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:08,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2464 transitions. [2023-11-06 22:51:08,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 205.33333333333334) internal successors, (2464), 12 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 22:51:08,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states 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 22:51:08,697 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states 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 22:51:08,697 INFO L175 Difference]: Start difference. First operand has 113 places, 71 transitions, 672 flow. Second operand 12 states and 2464 transitions. [2023-11-06 22:51:08,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 360 transitions, 2935 flow [2023-11-06 22:51:08,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 360 transitions, 2934 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:08,720 INFO L231 Difference]: Finished difference. Result has 128 places, 76 transitions, 1016 flow [2023-11-06 22:51:08,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1016, PETRI_PLACES=128, PETRI_TRANSITIONS=76} [2023-11-06 22:51:08,721 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2023-11-06 22:51:08,722 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 76 transitions, 1016 flow [2023-11-06 22:51:08,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states 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 22:51:08,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:08,723 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:08,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:08,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:51:08,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:51:08,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:08,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1944656524, now seen corresponding path program 2 times [2023-11-06 22:51:08,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:08,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376039483] [2023-11-06 22:51:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:08,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:14,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:51:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871683674] [2023-11-06 22:51:14,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:51:14,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:14,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:14,260 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:14,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:51:24,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:51:24,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:51:24,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:51:24,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-11-06 22:51:25,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:25,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376039483] [2023-11-06 22:51:25,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:51:25,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871683674] [2023-11-06 22:51:25,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871683674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:25,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:25,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350391763] [2023-11-06 22:51:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:25,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:25,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 449 [2023-11-06 22:51:25,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 76 transitions, 1016 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 22:51:25,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:25,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 449 [2023-11-06 22:51:25,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:25,965 INFO L124 PetriNetUnfolderBase]: 369/907 cut-off events. [2023-11-06 22:51:25,966 INFO L125 PetriNetUnfolderBase]: For 6294/6294 co-relation queries the response was YES. [2023-11-06 22:51:25,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2672 conditions, 907 events. 369/907 cut-off events. For 6294/6294 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2309 event pairs, 76 based on Foata normal form. 0/703 useless extension candidates. Maximal degree in co-relation 1332. Up to 518 conditions per place. [2023-11-06 22:51:25,971 INFO L140 encePairwiseOnDemand]: 446/449 looper letters, 88 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-06 22:51:25,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 90 transitions, 1226 flow [2023-11-06 22:51:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2023-11-06 22:51:25,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48700816629547145 [2023-11-06 22:51:25,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2023-11-06 22:51:25,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2023-11-06 22:51:25,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:25,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2023-11-06 22:51:25,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 22:51:25,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:51:25,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states 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 22:51:25,978 INFO L175 Difference]: Start difference. First operand has 128 places, 76 transitions, 1016 flow. Second operand 3 states and 656 transitions. [2023-11-06 22:51:25,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 90 transitions, 1226 flow [2023-11-06 22:51:26,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 90 transitions, 1216 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:51:26,002 INFO L231 Difference]: Finished difference. Result has 124 places, 75 transitions, 1008 flow [2023-11-06 22:51:26,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1008, PETRI_PLACES=124, PETRI_TRANSITIONS=75} [2023-11-06 22:51:26,003 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2023-11-06 22:51:26,004 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 75 transitions, 1008 flow [2023-11-06 22:51:26,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 22:51:26,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:26,004 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:26,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:51:26,220 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:51:26,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1944656565, now seen corresponding path program 1 times [2023-11-06 22:51:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:26,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907350714] [2023-11-06 22:51:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:26,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:31,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:51:31,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643819947] [2023-11-06 22:51:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:31,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:31,608 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:31,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee2c1db9-3a8d-4298-9fe9-1de67e7dc261/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process