./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/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_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/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_f244b2c4-161f-43e0-83ef-84890ff41449/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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:15:59,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:15:59,174 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:15:59,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:15:59,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:15:59,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:15:59,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:15:59,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:15:59,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:15:59,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:15:59,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:15:59,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:15:59,250 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:15:59,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:15:59,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:15:59,253 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:15:59,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:15:59,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:15:59,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:15:59,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:15:59,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:15:59,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:15:59,256 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:15:59,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:15:59,259 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:15:59,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:15:59,260 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:15:59,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:15:59,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:15:59,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:15:59,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:15:59,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:15:59,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:15:59,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:15:59,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:15:59,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:15:59,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:15:59,265 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:15:59,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:15:59,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:15:59,266 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:15:59,266 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_f244b2c4-161f-43e0-83ef-84890ff41449/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2023-11-06 21:15:59,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:15:59,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:15:59,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:15:59,624 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:15:59,624 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:15:59,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-11-06 21:16:02,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:16:03,280 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:16:03,283 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-11-06 21:16:03,313 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/data/cb07e9f83/31a406b922a64050923f651eb1d65b12/FLAGbedef86db [2023-11-06 21:16:03,341 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/data/cb07e9f83/31a406b922a64050923f651eb1d65b12 [2023-11-06 21:16:03,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:16:03,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:16:03,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:16:03,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:16:03,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:16:03,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:03" (1/1) ... [2023-11-06 21:16:03,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700e5057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:03, skipping insertion in model container [2023-11-06 21:16:03,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:03" (1/1) ... [2023-11-06 21:16:03,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:16:03,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:16:03,953 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:16:04,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:16:04,099 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:16:04,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04 WrapperNode [2023-11-06 21:16:04,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:16:04,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:16:04,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:16:04,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:16:04,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,194 INFO L138 Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 109 [2023-11-06 21:16:04,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:16:04,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:16:04,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:16:04,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:16:04,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:16:04,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:16:04,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:16:04,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:16:04,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:16:04,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:04,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:16:04,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:16:04,369 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-06 21:16:04,370 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-06 21:16:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:16:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:16:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:16:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:16:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:16:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:16:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:16:04,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:16:04,374 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 21:16:04,564 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:16:04,566 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:16:04,895 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:16:04,905 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:16:04,905 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 21:16:04,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:04 BoogieIcfgContainer [2023-11-06 21:16:04,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:16:04,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:16:04,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:16:04,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:16:04,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:16:03" (1/3) ... [2023-11-06 21:16:04,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6228f116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:04, skipping insertion in model container [2023-11-06 21:16:04,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (2/3) ... [2023-11-06 21:16:04,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6228f116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:04, skipping insertion in model container [2023-11-06 21:16:04,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:04" (3/3) ... [2023-11-06 21:16:04,921 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-11-06 21:16:04,931 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:16:04,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:16:04,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 21:16:04,945 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:16:05,031 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:16:05,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 131 transitions, 266 flow [2023-11-06 21:16:05,192 INFO L124 PetriNetUnfolderBase]: 12/130 cut-off events. [2023-11-06 21:16:05,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:16:05,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 130 events. 12/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 300 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-11-06 21:16:05,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 131 transitions, 266 flow [2023-11-06 21:16:05,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 263 flow [2023-11-06 21:16:05,220 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:16:05,237 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 130 transitions, 263 flow [2023-11-06 21:16:05,243 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 130 transitions, 263 flow [2023-11-06 21:16:05,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 130 transitions, 263 flow [2023-11-06 21:16:05,284 INFO L124 PetriNetUnfolderBase]: 12/130 cut-off events. [2023-11-06 21:16:05,284 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:16:05,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 130 events. 12/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 302 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-11-06 21:16:05,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 4720 [2023-11-06 21:16:09,474 INFO L134 LiptonReduction]: Checked pairs total: 8001 [2023-11-06 21:16:09,475 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-11-06 21:16:09,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:16:09,498 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;@31a15742, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:16:09,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-06 21:16:09,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:16:09,505 INFO L124 PetriNetUnfolderBase]: 5/21 cut-off events. [2023-11-06 21:16:09,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:16:09,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:09,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:16:09,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:09,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1357084004, now seen corresponding path program 1 times [2023-11-06 21:16:09,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:09,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070083275] [2023-11-06 21:16:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:09,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:09,889 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 21:16:09,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:09,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070083275] [2023-11-06 21:16:09,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070083275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:09,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:09,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:16:09,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713443368] [2023-11-06 21:16:09,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:09,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:09,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 266 [2023-11-06 21:16:09,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 21:16:09,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:09,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 266 [2023-11-06 21:16:09,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:10,138 INFO L124 PetriNetUnfolderBase]: 157/294 cut-off events. [2023-11-06 21:16:10,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:16:10,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 294 events. 157/294 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1104 event pairs, 86 based on Foata normal form. 11/203 useless extension candidates. Maximal degree in co-relation 575. Up to 244 conditions per place. [2023-11-06 21:16:10,143 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 32 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2023-11-06 21:16:10,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 153 flow [2023-11-06 21:16:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:16:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:16:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-11-06 21:16:10,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-11-06 21:16:10,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-11-06 21:16:10,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-11-06 21:16:10,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:10,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-11-06 21:16:10,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 21:16:10,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:10,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:10,185 INFO L175 Difference]: Start difference. First operand has 29 places, 32 transitions, 67 flow. Second operand 3 states and 385 transitions. [2023-11-06 21:16:10,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 153 flow [2023-11-06 21:16:10,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:16:10,191 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 88 flow [2023-11-06 21:16:10,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2023-11-06 21:16:10,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-11-06 21:16:10,197 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 88 flow [2023-11-06 21:16:10,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 21:16:10,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:10,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:10,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:16:10,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:10,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash -361939189, now seen corresponding path program 1 times [2023-11-06 21:16:10,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:10,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278632441] [2023-11-06 21:16:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:10,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:10,296 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 21:16:10,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:10,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278632441] [2023-11-06 21:16:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278632441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:10,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:10,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:16:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974704330] [2023-11-06 21:16:10,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:10,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 266 [2023-11-06 21:16:10,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 21:16:10,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:10,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 266 [2023-11-06 21:16:10,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:10,476 INFO L124 PetriNetUnfolderBase]: 168/325 cut-off events. [2023-11-06 21:16:10,476 INFO L125 PetriNetUnfolderBase]: For 43/50 co-relation queries the response was YES. [2023-11-06 21:16:10,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 325 events. 168/325 cut-off events. For 43/50 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1395 event pairs, 16 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 714. Up to 271 conditions per place. [2023-11-06 21:16:10,487 INFO L140 encePairwiseOnDemand]: 261/266 looper letters, 42 selfloop transitions, 2 changer transitions 1/49 dead transitions. [2023-11-06 21:16:10,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 224 flow [2023-11-06 21:16:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:16:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:16:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-11-06 21:16:10,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487468671679198 [2023-11-06 21:16:10,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-11-06 21:16:10,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-11-06 21:16:10,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:10,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-11-06 21:16:10,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 21:16:10,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:10,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:10,510 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 88 flow. Second operand 3 states and 389 transitions. [2023-11-06 21:16:10,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 224 flow [2023-11-06 21:16:10,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:16:10,517 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 98 flow [2023-11-06 21:16:10,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2023-11-06 21:16:10,522 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-11-06 21:16:10,522 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 98 flow [2023-11-06 21:16:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 21:16:10,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:10,524 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:10,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:16:10,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:10,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2133494374, now seen corresponding path program 1 times [2023-11-06 21:16:10,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:10,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988433004] [2023-11-06 21:16:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:10,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988433004] [2023-11-06 21:16:10,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988433004] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567532657] [2023-11-06 21:16:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:10,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:10,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:10,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:16:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:10,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:16:10,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:10,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567532657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:10,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:10,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 21:16:10,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103875334] [2023-11-06 21:16:10,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:10,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:16:10,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:16:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:16:11,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 266 [2023-11-06 21:16:11,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 21:16:11,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:11,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 266 [2023-11-06 21:16:11,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:11,257 INFO L124 PetriNetUnfolderBase]: 300/595 cut-off events. [2023-11-06 21:16:11,257 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-06 21:16:11,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 595 events. 300/595 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2281 event pairs, 65 based on Foata normal form. 20/514 useless extension candidates. Maximal degree in co-relation 1446. Up to 229 conditions per place. [2023-11-06 21:16:11,264 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 60 selfloop transitions, 19 changer transitions 1/82 dead transitions. [2023-11-06 21:16:11,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 82 transitions, 402 flow [2023-11-06 21:16:11,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:16:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:16:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 821 transitions. [2023-11-06 21:16:11,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44092373791621914 [2023-11-06 21:16:11,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 821 transitions. [2023-11-06 21:16:11,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 821 transitions. [2023-11-06 21:16:11,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:11,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 821 transitions. [2023-11-06 21:16:11,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 21:16:11,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 21:16:11,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 21:16:11,282 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 98 flow. Second operand 7 states and 821 transitions. [2023-11-06 21:16:11,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 82 transitions, 402 flow [2023-11-06 21:16:11,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 82 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:16:11,287 INFO L231 Difference]: Finished difference. Result has 41 places, 47 transitions, 243 flow [2023-11-06 21:16:11,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2023-11-06 21:16:11,288 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-06 21:16:11,288 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 47 transitions, 243 flow [2023-11-06 21:16:11,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 21:16:11,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:11,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:11,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:16:11,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:11,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:11,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2133494435, now seen corresponding path program 1 times [2023-11-06 21:16:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139465820] [2023-11-06 21:16:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:11,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:16:11,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:11,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139465820] [2023-11-06 21:16:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139465820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:11,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:16:11,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821823020] [2023-11-06 21:16:11,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:11,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:11,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:11,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 266 [2023-11-06 21:16:11,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:11,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:11,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 266 [2023-11-06 21:16:11,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:11,818 INFO L124 PetriNetUnfolderBase]: 351/722 cut-off events. [2023-11-06 21:16:11,819 INFO L125 PetriNetUnfolderBase]: For 671/673 co-relation queries the response was YES. [2023-11-06 21:16:11,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 722 events. 351/722 cut-off events. For 671/673 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3093 event pairs, 82 based on Foata normal form. 45/701 useless extension candidates. Maximal degree in co-relation 2214. Up to 378 conditions per place. [2023-11-06 21:16:11,827 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 54 selfloop transitions, 16 changer transitions 0/75 dead transitions. [2023-11-06 21:16:11,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 75 transitions, 514 flow [2023-11-06 21:16:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:16:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:16:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-11-06 21:16:11,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-11-06 21:16:11,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-11-06 21:16:11,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-11-06 21:16:11,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:11,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-11-06 21:16:11,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 21:16:11,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:11,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:11,836 INFO L175 Difference]: Start difference. First operand has 41 places, 47 transitions, 243 flow. Second operand 3 states and 385 transitions. [2023-11-06 21:16:11,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 75 transitions, 514 flow [2023-11-06 21:16:11,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 508 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 21:16:11,844 INFO L231 Difference]: Finished difference. Result has 45 places, 60 transitions, 418 flow [2023-11-06 21:16:11,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=45, PETRI_TRANSITIONS=60} [2023-11-06 21:16:11,846 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-11-06 21:16:11,846 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 60 transitions, 418 flow [2023-11-06 21:16:11,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:16:11,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:11,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:11,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:16:11,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:11,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:11,848 INFO L85 PathProgramCache]: Analyzing trace with hash 855043857, now seen corresponding path program 1 times [2023-11-06 21:16:11,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:11,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199103520] [2023-11-06 21:16:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:11,925 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 21:16:11,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:11,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199103520] [2023-11-06 21:16:11,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199103520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:11,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:11,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:16:11,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377779622] [2023-11-06 21:16:11,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:11,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:11,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:11,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 266 [2023-11-06 21:16:11,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 60 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 21:16:11,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:11,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 266 [2023-11-06 21:16:11,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:12,024 INFO L124 PetriNetUnfolderBase]: 70/178 cut-off events. [2023-11-06 21:16:12,025 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2023-11-06 21:16:12,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 178 events. 70/178 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 542 event pairs, 4 based on Foata normal form. 26/182 useless extension candidates. Maximal degree in co-relation 577. Up to 124 conditions per place. [2023-11-06 21:16:12,028 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 31 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2023-11-06 21:16:12,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 297 flow [2023-11-06 21:16:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:16:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:16:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-11-06 21:16:12,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46115288220551376 [2023-11-06 21:16:12,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-11-06 21:16:12,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-11-06 21:16:12,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:12,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-11-06 21:16:12,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 21:16:12,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:12,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:12,037 INFO L175 Difference]: Start difference. First operand has 45 places, 60 transitions, 418 flow. Second operand 3 states and 368 transitions. [2023-11-06 21:16:12,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 297 flow [2023-11-06 21:16:12,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 263 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-06 21:16:12,042 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 175 flow [2023-11-06 21:16:12,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-11-06 21:16:12,043 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-11-06 21:16:12,044 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 175 flow [2023-11-06 21:16:12,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 21:16:12,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:12,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:12,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:16:12,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:12,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1713813767, now seen corresponding path program 1 times [2023-11-06 21:16:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:12,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958961086] [2023-11-06 21:16:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:12,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:12,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958961086] [2023-11-06 21:16:12,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958961086] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:12,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803348783] [2023-11-06 21:16:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:12,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:12,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:12,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:12,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:16:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:12,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:16:12,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:12,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:12,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803348783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:12,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:12,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 10 [2023-11-06 21:16:12,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345412935] [2023-11-06 21:16:12,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:16:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:12,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:16:12,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:16:12,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 266 [2023-11-06 21:16:12,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 175 flow. Second operand has 10 states, 10 states have (on average 102.2) internal successors, (1022), 10 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 21:16:12,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:12,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 266 [2023-11-06 21:16:12,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:12,836 INFO L124 PetriNetUnfolderBase]: 157/340 cut-off events. [2023-11-06 21:16:12,837 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-11-06 21:16:12,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 340 events. 157/340 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1179 event pairs, 20 based on Foata normal form. 2/287 useless extension candidates. Maximal degree in co-relation 1054. Up to 135 conditions per place. [2023-11-06 21:16:12,841 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 80 selfloop transitions, 28 changer transitions 11/121 dead transitions. [2023-11-06 21:16:12,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 121 transitions, 775 flow [2023-11-06 21:16:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:16:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 21:16:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1705 transitions. [2023-11-06 21:16:12,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006109022556391 [2023-11-06 21:16:12,850 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1705 transitions. [2023-11-06 21:16:12,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1705 transitions. [2023-11-06 21:16:12,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:12,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1705 transitions. [2023-11-06 21:16:12,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 106.5625) internal successors, (1705), 16 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states 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 21:16:12,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 266.0) internal successors, (4522), 17 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states 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 21:16:12,910 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 266.0) internal successors, (4522), 17 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states 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 21:16:12,911 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 175 flow. Second operand 16 states and 1705 transitions. [2023-11-06 21:16:12,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 121 transitions, 775 flow [2023-11-06 21:16:12,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 121 transitions, 756 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:16:12,917 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 427 flow [2023-11-06 21:16:12,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=427, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-11-06 21:16:12,920 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2023-11-06 21:16:12,921 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 427 flow [2023-11-06 21:16:12,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 102.2) internal successors, (1022), 10 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 21:16:12,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:12,922 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:16:12,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:13,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 21:16:13,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:13,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2005316353, now seen corresponding path program 1 times [2023-11-06 21:16:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:13,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857364374] [2023-11-06 21:16:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:13,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857364374] [2023-11-06 21:16:13,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857364374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:13,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:13,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:16:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575725555] [2023-11-06 21:16:13,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:16:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:16:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:16:13,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 266 [2023-11-06 21:16:13,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 21:16:13,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:13,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 266 [2023-11-06 21:16:13,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:13,345 INFO L124 PetriNetUnfolderBase]: 95/252 cut-off events. [2023-11-06 21:16:13,346 INFO L125 PetriNetUnfolderBase]: For 894/894 co-relation queries the response was YES. [2023-11-06 21:16:13,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 252 events. 95/252 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 852 event pairs, 22 based on Foata normal form. 27/278 useless extension candidates. Maximal degree in co-relation 983. Up to 164 conditions per place. [2023-11-06 21:16:13,350 INFO L140 encePairwiseOnDemand]: 263/266 looper letters, 50 selfloop transitions, 4 changer transitions 3/63 dead transitions. [2023-11-06 21:16:13,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 568 flow [2023-11-06 21:16:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:16:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:16:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-11-06 21:16:13,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46867167919799496 [2023-11-06 21:16:13,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-11-06 21:16:13,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-11-06 21:16:13,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:13,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-11-06 21:16:13,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 21:16:13,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:13,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 21:16:13,362 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 427 flow. Second operand 3 states and 374 transitions. [2023-11-06 21:16:13,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 568 flow [2023-11-06 21:16:13,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 545 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-06 21:16:13,372 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 379 flow [2023-11-06 21:16:13,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-11-06 21:16:13,373 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-11-06 21:16:13,373 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 379 flow [2023-11-06 21:16:13,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 21:16:13,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:13,374 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:13,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:16:13,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:13,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:13,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1479851035, now seen corresponding path program 1 times [2023-11-06 21:16:13,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:13,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168412472] [2023-11-06 21:16:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:13,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168412472] [2023-11-06 21:16:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168412472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:13,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:13,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:16:13,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333174699] [2023-11-06 21:16:13,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:13,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:16:13,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:13,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:16:13,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:16:13,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 266 [2023-11-06 21:16:13,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 21:16:13,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:13,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 266 [2023-11-06 21:16:13,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:13,725 INFO L124 PetriNetUnfolderBase]: 137/327 cut-off events. [2023-11-06 21:16:13,725 INFO L125 PetriNetUnfolderBase]: For 1133/1133 co-relation queries the response was YES. [2023-11-06 21:16:13,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 327 events. 137/327 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1177 event pairs, 20 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1342. Up to 116 conditions per place. [2023-11-06 21:16:13,730 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 65 selfloop transitions, 22 changer transitions 0/89 dead transitions. [2023-11-06 21:16:13,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 828 flow [2023-11-06 21:16:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:16:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:16:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 573 transitions. [2023-11-06 21:16:13,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43082706766917295 [2023-11-06 21:16:13,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 573 transitions. [2023-11-06 21:16:13,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 573 transitions. [2023-11-06 21:16:13,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:13,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 573 transitions. [2023-11-06 21:16:13,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states 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 21:16:13,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 21:16:13,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 21:16:13,742 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 379 flow. Second operand 5 states and 573 transitions. [2023-11-06 21:16:13,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 828 flow [2023-11-06 21:16:13,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 790 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-06 21:16:13,751 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 513 flow [2023-11-06 21:16:13,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=513, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-11-06 21:16:13,752 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2023-11-06 21:16:13,753 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 513 flow [2023-11-06 21:16:13,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 21:16:13,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:13,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:13,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:16:13,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:13,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1360257182, now seen corresponding path program 1 times [2023-11-06 21:16:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:13,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245561380] [2023-11-06 21:16:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:13,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:13,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245561380] [2023-11-06 21:16:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245561380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:13,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:16:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512781237] [2023-11-06 21:16:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:13,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:16:13,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:13,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:16:13,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:16:13,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 266 [2023-11-06 21:16:13,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 21:16:13,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:13,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 266 [2023-11-06 21:16:13,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:14,220 INFO L124 PetriNetUnfolderBase]: 162/389 cut-off events. [2023-11-06 21:16:14,220 INFO L125 PetriNetUnfolderBase]: For 1580/1580 co-relation queries the response was YES. [2023-11-06 21:16:14,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 389 events. 162/389 cut-off events. For 1580/1580 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1312 event pairs, 64 based on Foata normal form. 15/404 useless extension candidates. Maximal degree in co-relation 1639. Up to 193 conditions per place. [2023-11-06 21:16:14,226 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 67 selfloop transitions, 19 changer transitions 9/97 dead transitions. [2023-11-06 21:16:14,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 968 flow [2023-11-06 21:16:14,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:16:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:16:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 855 transitions. [2023-11-06 21:16:14,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2023-11-06 21:16:14,232 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 855 transitions. [2023-11-06 21:16:14,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 855 transitions. [2023-11-06 21:16:14,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:14,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 855 transitions. [2023-11-06 21:16:14,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.875) internal successors, (855), 8 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 21:16:14,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 21:16:14,246 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 21:16:14,246 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 513 flow. Second operand 8 states and 855 transitions. [2023-11-06 21:16:14,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 968 flow [2023-11-06 21:16:14,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 956 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:16:14,265 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 641 flow [2023-11-06 21:16:14,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-11-06 21:16:14,267 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-11-06 21:16:14,267 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 641 flow [2023-11-06 21:16:14,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 21:16:14,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:14,269 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-11-06 21:16:14,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:16:14,269 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:14,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1337644672, now seen corresponding path program 1 times [2023-11-06 21:16:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:14,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517497271] [2023-11-06 21:16:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:14,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:14,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517497271] [2023-11-06 21:16:14,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517497271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:14,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172751593] [2023-11-06 21:16:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:14,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:14,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:14,388 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:14,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:16:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:14,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:16:14,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:14,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:14,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172751593] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:14,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:14,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-06 21:16:14,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233402318] [2023-11-06 21:16:14,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:14,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:16:14,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:14,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:16:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:16:14,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 266 [2023-11-06 21:16:14,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 641 flow. Second operand has 9 states, 9 states have (on average 119.44444444444444) internal successors, (1075), 9 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 21:16:14,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:14,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 266 [2023-11-06 21:16:14,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:15,054 INFO L124 PetriNetUnfolderBase]: 365/893 cut-off events. [2023-11-06 21:16:15,054 INFO L125 PetriNetUnfolderBase]: For 4324/4324 co-relation queries the response was YES. [2023-11-06 21:16:15,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 893 events. 365/893 cut-off events. For 4324/4324 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3405 event pairs, 18 based on Foata normal form. 94/987 useless extension candidates. Maximal degree in co-relation 3972. Up to 323 conditions per place. [2023-11-06 21:16:15,070 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 163 selfloop transitions, 13 changer transitions 13/199 dead transitions. [2023-11-06 21:16:15,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 199 transitions, 2344 flow [2023-11-06 21:16:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:16:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:16:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-11-06 21:16:15,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2023-11-06 21:16:15,076 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-11-06 21:16:15,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-11-06 21:16:15,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:15,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-11-06 21:16:15,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 21:16:15,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 21:16:15,088 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 21:16:15,088 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 641 flow. Second operand 8 states and 1032 transitions. [2023-11-06 21:16:15,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 199 transitions, 2344 flow [2023-11-06 21:16:15,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 199 transitions, 2260 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-06 21:16:15,117 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 724 flow [2023-11-06 21:16:15,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-11-06 21:16:15,119 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-11-06 21:16:15,119 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 724 flow [2023-11-06 21:16:15,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.44444444444444) internal successors, (1075), 9 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 21:16:15,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:15,120 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:15,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:15,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 21:16:15,334 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:15,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:15,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1807403449, now seen corresponding path program 2 times [2023-11-06 21:16:15,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:15,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356926489] [2023-11-06 21:16:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:15,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:15,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:15,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356926489] [2023-11-06 21:16:15,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356926489] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:15,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622358538] [2023-11-06 21:16:15,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:16:15,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:15,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:15,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:15,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:16:15,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:16:15,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:15,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:16:15,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:16:15,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622358538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:15,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:15,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-06 21:16:15,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688228396] [2023-11-06 21:16:15,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:15,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:16:15,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:15,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:16:15,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:15,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 266 [2023-11-06 21:16:15,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 21:16:15,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:15,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 266 [2023-11-06 21:16:15,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:15,955 INFO L124 PetriNetUnfolderBase]: 401/936 cut-off events. [2023-11-06 21:16:15,955 INFO L125 PetriNetUnfolderBase]: For 5672/5673 co-relation queries the response was YES. [2023-11-06 21:16:15,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 936 events. 401/936 cut-off events. For 5672/5673 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3487 event pairs, 103 based on Foata normal form. 9/941 useless extension candidates. Maximal degree in co-relation 4734. Up to 628 conditions per place. [2023-11-06 21:16:15,970 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 52 selfloop transitions, 27 changer transitions 0/85 dead transitions. [2023-11-06 21:16:15,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 1001 flow [2023-11-06 21:16:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:16:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:16:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2023-11-06 21:16:15,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42255639097744363 [2023-11-06 21:16:15,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2023-11-06 21:16:15,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2023-11-06 21:16:15,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:15,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2023-11-06 21:16:15,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states 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 21:16:15,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 21:16:15,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 21:16:15,981 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 724 flow. Second operand 5 states and 562 transitions. [2023-11-06 21:16:15,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 1001 flow [2023-11-06 21:16:16,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 935 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-11-06 21:16:16,005 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 714 flow [2023-11-06 21:16:16,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-11-06 21:16:16,006 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-11-06 21:16:16,006 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 714 flow [2023-11-06 21:16:16,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 21:16:16,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:16,007 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:16,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:16,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:16,214 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:16,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1743610363, now seen corresponding path program 1 times [2023-11-06 21:16:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:16,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77049865] [2023-11-06 21:16:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:16,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:16,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77049865] [2023-11-06 21:16:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77049865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:16,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828996310] [2023-11-06 21:16:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:16,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:16,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:16,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:16,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:16:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:16,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:16:16,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:16,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:16,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828996310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:16,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:16,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-06 21:16:16,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969328596] [2023-11-06 21:16:16,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:16,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:16:16,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:16,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:16:16,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:16:16,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 266 [2023-11-06 21:16:16,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 714 flow. Second operand has 17 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states 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 21:16:16,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:16,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 266 [2023-11-06 21:16:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:17,419 INFO L124 PetriNetUnfolderBase]: 474/1077 cut-off events. [2023-11-06 21:16:17,420 INFO L125 PetriNetUnfolderBase]: For 5884/5884 co-relation queries the response was YES. [2023-11-06 21:16:17,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 1077 events. 474/1077 cut-off events. For 5884/5884 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4186 event pairs, 134 based on Foata normal form. 28/1104 useless extension candidates. Maximal degree in co-relation 5190. Up to 418 conditions per place. [2023-11-06 21:16:17,435 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 71 selfloop transitions, 37 changer transitions 23/133 dead transitions. [2023-11-06 21:16:17,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 133 transitions, 1436 flow [2023-11-06 21:16:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:16:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 21:16:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1628 transitions. [2023-11-06 21:16:17,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080200501253133 [2023-11-06 21:16:17,443 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1628 transitions. [2023-11-06 21:16:17,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1628 transitions. [2023-11-06 21:16:17,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:17,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1628 transitions. [2023-11-06 21:16:17,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 108.53333333333333) internal successors, (1628), 15 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states 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 21:16:17,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 21:16:17,459 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 21:16:17,459 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 714 flow. Second operand 15 states and 1628 transitions. [2023-11-06 21:16:17,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 133 transitions, 1436 flow [2023-11-06 21:16:17,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 133 transitions, 1400 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-06 21:16:17,488 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 816 flow [2023-11-06 21:16:17,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=816, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2023-11-06 21:16:17,489 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-11-06 21:16:17,489 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 816 flow [2023-11-06 21:16:17,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states 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 21:16:17,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:17,490 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 4, 4, 4, 3, 1, 1, 1, 1] [2023-11-06 21:16:17,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:17,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:17,697 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:17,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:17,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1762009039, now seen corresponding path program 2 times [2023-11-06 21:16:17,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:17,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179130949] [2023-11-06 21:16:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:17,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:17,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179130949] [2023-11-06 21:16:17,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179130949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:17,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443154683] [2023-11-06 21:16:17,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:16:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:17,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:17,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:16:18,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:16:18,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:18,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:16:18,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 21:16:18,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 21:16:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443154683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:18,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 27 [2023-11-06 21:16:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065940390] [2023-11-06 21:16:18,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:18,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 21:16:18,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 21:16:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2023-11-06 21:16:18,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 266 [2023-11-06 21:16:18,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 816 flow. Second operand has 27 states, 27 states have (on average 102.14814814814815) internal successors, (2758), 27 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states 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 21:16:18,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:18,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 266 [2023-11-06 21:16:18,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:20,047 INFO L124 PetriNetUnfolderBase]: 386/1093 cut-off events. [2023-11-06 21:16:20,048 INFO L125 PetriNetUnfolderBase]: For 7771/7771 co-relation queries the response was YES. [2023-11-06 21:16:20,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5401 conditions, 1093 events. 386/1093 cut-off events. For 7771/7771 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4730 event pairs, 33 based on Foata normal form. 43/1136 useless extension candidates. Maximal degree in co-relation 5358. Up to 311 conditions per place. [2023-11-06 21:16:20,064 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 242 selfloop transitions, 97 changer transitions 45/386 dead transitions. [2023-11-06 21:16:20,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 386 transitions, 4392 flow [2023-11-06 21:16:20,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-06 21:16:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-06 21:16:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4716 transitions. [2023-11-06 21:16:20,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39398496240601505 [2023-11-06 21:16:20,082 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4716 transitions. [2023-11-06 21:16:20,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4716 transitions. [2023-11-06 21:16:20,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:20,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4716 transitions. [2023-11-06 21:16:20,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.8) internal successors, (4716), 45 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states 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 21:16:20,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 266.0) internal successors, (12236), 46 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states 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 21:16:20,133 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 266.0) internal successors, (12236), 46 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states 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 21:16:20,142 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 816 flow. Second operand 45 states and 4716 transitions. [2023-11-06 21:16:20,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 386 transitions, 4392 flow [2023-11-06 21:16:20,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 386 transitions, 4339 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-06 21:16:20,177 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 2052 flow [2023-11-06 21:16:20,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2052, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2023-11-06 21:16:20,178 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2023-11-06 21:16:20,178 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 2052 flow [2023-11-06 21:16:20,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 102.14814814814815) internal successors, (2758), 27 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states 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 21:16:20,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:20,180 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:20,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:20,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:20,386 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:20,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash -648255991, now seen corresponding path program 1 times [2023-11-06 21:16:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:20,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419430207] [2023-11-06 21:16:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:20,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:20,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:20,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419430207] [2023-11-06 21:16:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419430207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401692] [2023-11-06 21:16:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:20,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:20,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:20,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:20,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:16:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:20,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:16:20,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 21:16:20,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 21:16:21,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:21,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:21,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 22 [2023-11-06 21:16:21,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861140888] [2023-11-06 21:16:21,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:21,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 21:16:21,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:21,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 21:16:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-11-06 21:16:21,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 266 [2023-11-06 21:16:21,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 2052 flow. Second operand has 22 states, 22 states have (on average 96.81818181818181) internal successors, (2130), 22 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 21:16:21,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:21,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 266 [2023-11-06 21:16:21,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:23,828 INFO L124 PetriNetUnfolderBase]: 517/1507 cut-off events. [2023-11-06 21:16:23,829 INFO L125 PetriNetUnfolderBase]: For 17339/17339 co-relation queries the response was YES. [2023-11-06 21:16:23,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8195 conditions, 1507 events. 517/1507 cut-off events. For 17339/17339 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6458 event pairs, 18 based on Foata normal form. 80/1587 useless extension candidates. Maximal degree in co-relation 8144. Up to 505 conditions per place. [2023-11-06 21:16:23,854 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 251 selfloop transitions, 283 changer transitions 15/551 dead transitions. [2023-11-06 21:16:23,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 551 transitions, 6777 flow [2023-11-06 21:16:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-11-06 21:16:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-11-06 21:16:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 8506 transitions. [2023-11-06 21:16:23,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36755682309221327 [2023-11-06 21:16:23,882 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 8506 transitions. [2023-11-06 21:16:23,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 8506 transitions. [2023-11-06 21:16:23,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:23,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 8506 transitions. [2023-11-06 21:16:23,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 97.77011494252874) internal successors, (8506), 87 states have internal predecessors, (8506), 0 states have call successors, (0), 0 states 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 21:16:23,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 266.0) internal successors, (23408), 88 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states 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 21:16:23,956 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 266.0) internal successors, (23408), 88 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states 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 21:16:23,957 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 2052 flow. Second operand 87 states and 8506 transitions. [2023-11-06 21:16:23,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 551 transitions, 6777 flow [2023-11-06 21:16:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 551 transitions, 6534 flow, removed 58 selfloop flow, removed 17 redundant places. [2023-11-06 21:16:24,032 INFO L231 Difference]: Finished difference. Result has 222 places, 320 transitions, 4720 flow [2023-11-06 21:16:24,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=4720, PETRI_PLACES=222, PETRI_TRANSITIONS=320} [2023-11-06 21:16:24,034 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2023-11-06 21:16:24,035 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 320 transitions, 4720 flow [2023-11-06 21:16:24,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 96.81818181818181) internal successors, (2130), 22 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 21:16:24,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:24,038 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:24,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:24,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 21:16:24,245 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:24,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash 680336388, now seen corresponding path program 2 times [2023-11-06 21:16:24,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:24,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29085746] [2023-11-06 21:16:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:24,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29085746] [2023-11-06 21:16:24,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29085746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505822778] [2023-11-06 21:16:24,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:16:24,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:24,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:24,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:24,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:16:24,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:16:24,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:24,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:16:24,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-06 21:16:24,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-06 21:16:25,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505822778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:25,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:25,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2023-11-06 21:16:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85703675] [2023-11-06 21:16:25,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:25,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 21:16:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 21:16:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2023-11-06 21:16:25,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 266 [2023-11-06 21:16:25,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 320 transitions, 4720 flow. Second operand has 27 states, 27 states have (on average 96.77777777777777) internal successors, (2613), 27 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states 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 21:16:25,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:25,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 266 [2023-11-06 21:16:25,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:31,383 INFO L124 PetriNetUnfolderBase]: 905/2609 cut-off events. [2023-11-06 21:16:31,383 INFO L125 PetriNetUnfolderBase]: For 70836/70836 co-relation queries the response was YES. [2023-11-06 21:16:31,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17697 conditions, 2609 events. 905/2609 cut-off events. For 70836/70836 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13146 event pairs, 51 based on Foata normal form. 109/2718 useless extension candidates. Maximal degree in co-relation 17623. Up to 879 conditions per place. [2023-11-06 21:16:31,546 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 559 selfloop transitions, 500 changer transitions 28/1089 dead transitions. [2023-11-06 21:16:31,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 1089 transitions, 14989 flow [2023-11-06 21:16:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2023-11-06 21:16:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2023-11-06 21:16:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 17054 transitions. [2023-11-06 21:16:31,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684642641085472 [2023-11-06 21:16:31,604 INFO L72 ComplementDD]: Start complementDD. Operand 174 states and 17054 transitions. [2023-11-06 21:16:31,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 17054 transitions. [2023-11-06 21:16:31,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:31,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 174 states and 17054 transitions. [2023-11-06 21:16:31,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 175 states, 174 states have (on average 98.01149425287356) internal successors, (17054), 174 states have internal predecessors, (17054), 0 states have call successors, (0), 0 states 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 21:16:31,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 175 states, 175 states have (on average 266.0) internal successors, (46550), 175 states have internal predecessors, (46550), 0 states have call successors, (0), 0 states 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 21:16:31,747 INFO L81 ComplementDD]: Finished complementDD. Result has 175 states, 175 states have (on average 266.0) internal successors, (46550), 175 states have internal predecessors, (46550), 0 states have call successors, (0), 0 states 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 21:16:31,748 INFO L175 Difference]: Start difference. First operand has 222 places, 320 transitions, 4720 flow. Second operand 174 states and 17054 transitions. [2023-11-06 21:16:31,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 1089 transitions, 14989 flow [2023-11-06 21:16:31,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1089 transitions, 13583 flow, removed 501 selfloop flow, removed 7 redundant places. [2023-11-06 21:16:32,006 INFO L231 Difference]: Finished difference. Result has 440 places, 589 transitions, 9321 flow [2023-11-06 21:16:32,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=174, PETRI_FLOW=9321, PETRI_PLACES=440, PETRI_TRANSITIONS=589} [2023-11-06 21:16:32,007 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 411 predicate places. [2023-11-06 21:16:32,008 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 589 transitions, 9321 flow [2023-11-06 21:16:32,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 96.77777777777777) internal successors, (2613), 27 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states 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 21:16:32,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:32,009 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2023-11-06 21:16:32,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:32,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 21:16:32,216 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:32,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:32,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1714565815, now seen corresponding path program 3 times [2023-11-06 21:16:32,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:32,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588034166] [2023-11-06 21:16:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:32,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:32,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:32,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588034166] [2023-11-06 21:16:32,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588034166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:32,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109569545] [2023-11-06 21:16:32,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:16:32,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:32,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:32,607 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:32,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:16:32,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-06 21:16:32,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:32,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:16:32,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 18 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:33,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 18 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:33,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109569545] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:33,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:33,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 20] total 50 [2023-11-06 21:16:33,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13179641] [2023-11-06 21:16:33,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:33,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-06 21:16:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-06 21:16:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1965, Unknown=0, NotChecked=0, Total=2450 [2023-11-06 21:16:34,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 266 [2023-11-06 21:16:34,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 589 transitions, 9321 flow. Second operand has 50 states, 50 states have (on average 102.04) internal successors, (5102), 50 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states 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 21:16:34,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:34,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 266 [2023-11-06 21:16:34,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:38,185 INFO L124 PetriNetUnfolderBase]: 1122/3252 cut-off events. [2023-11-06 21:16:38,185 INFO L125 PetriNetUnfolderBase]: For 238058/238058 co-relation queries the response was YES. [2023-11-06 21:16:38,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28972 conditions, 3252 events. 1122/3252 cut-off events. For 238058/238058 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 17146 event pairs, 151 based on Foata normal form. 102/3354 useless extension candidates. Maximal degree in co-relation 28846. Up to 795 conditions per place. [2023-11-06 21:16:38,273 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 569 selfloop transitions, 382 changer transitions 26/979 dead transitions. [2023-11-06 21:16:38,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 979 transitions, 16406 flow [2023-11-06 21:16:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-06 21:16:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-11-06 21:16:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 7457 transitions. [2023-11-06 21:16:38,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.394842740654453 [2023-11-06 21:16:38,297 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 7457 transitions. [2023-11-06 21:16:38,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 7457 transitions. [2023-11-06 21:16:38,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:38,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 7457 transitions. [2023-11-06 21:16:38,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 105.02816901408451) internal successors, (7457), 71 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states 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 21:16:38,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 266.0) internal successors, (19152), 72 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states 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 21:16:38,360 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 266.0) internal successors, (19152), 72 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states 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 21:16:38,360 INFO L175 Difference]: Start difference. First operand has 440 places, 589 transitions, 9321 flow. Second operand 71 states and 7457 transitions. [2023-11-06 21:16:38,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 979 transitions, 16406 flow [2023-11-06 21:16:38,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 979 transitions, 15173 flow, removed 400 selfloop flow, removed 24 redundant places. [2023-11-06 21:16:39,014 INFO L231 Difference]: Finished difference. Result has 501 places, 653 transitions, 10393 flow [2023-11-06 21:16:39,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=10393, PETRI_PLACES=501, PETRI_TRANSITIONS=653} [2023-11-06 21:16:39,015 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 472 predicate places. [2023-11-06 21:16:39,015 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 653 transitions, 10393 flow [2023-11-06 21:16:39,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 102.04) internal successors, (5102), 50 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states 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 21:16:39,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:39,016 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:39,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:39,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 21:16:39,217 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:39,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1988723908, now seen corresponding path program 3 times [2023-11-06 21:16:39,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430690424] [2023-11-06 21:16:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:39,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:39,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430690424] [2023-11-06 21:16:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430690424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762936578] [2023-11-06 21:16:39,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:16:39,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:39,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:39,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:39,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:16:39,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-06 21:16:39,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:39,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 21:16:39,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:40,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:40,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762936578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:40,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:40,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-06 21:16:40,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771268932] [2023-11-06 21:16:40,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:40,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 21:16:40,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:40,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 21:16:40,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-06 21:16:40,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 266 [2023-11-06 21:16:40,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 653 transitions, 10393 flow. Second operand has 25 states, 25 states have (on average 119.48) internal successors, (2987), 25 states have internal predecessors, (2987), 0 states have call successors, (0), 0 states 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 21:16:40,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:40,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 266 [2023-11-06 21:16:40,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:16:45,382 INFO L124 PetriNetUnfolderBase]: 2232/6775 cut-off events. [2023-11-06 21:16:45,382 INFO L125 PetriNetUnfolderBase]: For 1104032/1104068 co-relation queries the response was YES. [2023-11-06 21:16:45,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69082 conditions, 6775 events. 2232/6775 cut-off events. For 1104032/1104068 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 37780 event pairs, 60 based on Foata normal form. 899/7674 useless extension candidates. Maximal degree in co-relation 68942. Up to 1812 conditions per place. [2023-11-06 21:16:45,549 INFO L140 encePairwiseOnDemand]: 263/266 looper letters, 1286 selfloop transitions, 182 changer transitions 37/1525 dead transitions. [2023-11-06 21:16:45,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1525 transitions, 28805 flow [2023-11-06 21:16:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 21:16:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 21:16:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3061 transitions. [2023-11-06 21:16:45,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47947994987468673 [2023-11-06 21:16:45,558 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3061 transitions. [2023-11-06 21:16:45,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3061 transitions. [2023-11-06 21:16:45,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:16:45,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3061 transitions. [2023-11-06 21:16:45,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 127.54166666666667) internal successors, (3061), 24 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states 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 21:16:45,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 266.0) internal successors, (6650), 25 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states 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 21:16:45,579 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 266.0) internal successors, (6650), 25 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states 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 21:16:45,579 INFO L175 Difference]: Start difference. First operand has 501 places, 653 transitions, 10393 flow. Second operand 24 states and 3061 transitions. [2023-11-06 21:16:45,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1525 transitions, 28805 flow [2023-11-06 21:16:46,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1525 transitions, 28184 flow, removed 99 selfloop flow, removed 38 redundant places. [2023-11-06 21:16:46,911 INFO L231 Difference]: Finished difference. Result has 496 places, 665 transitions, 10931 flow [2023-11-06 21:16:46,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=9796, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=10931, PETRI_PLACES=496, PETRI_TRANSITIONS=665} [2023-11-06 21:16:46,913 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 467 predicate places. [2023-11-06 21:16:46,913 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 665 transitions, 10931 flow [2023-11-06 21:16:46,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 119.48) internal successors, (2987), 25 states have internal predecessors, (2987), 0 states have call successors, (0), 0 states 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 21:16:46,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:16:46,914 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 23, 22, 17, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:16:46,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:47,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 21:16:47,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:16:47,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash -159637100, now seen corresponding path program 4 times [2023-11-06 21:16:47,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:47,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607571493] [2023-11-06 21:16:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:47,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 0 proven. 1042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:16:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607571493] [2023-11-06 21:16:48,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607571493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368128780] [2023-11-06 21:16:48,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:16:48,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:48,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:48,341 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:48,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:16:48,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:16:48,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:16:48,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:16:48,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 428 proven. 96 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-11-06 21:16:48,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 428 proven. 96 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-11-06 21:16:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368128780] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:16:49,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:16:49,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13, 13] total 49 [2023-11-06 21:16:49,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842729911] [2023-11-06 21:16:49,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:16:49,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-06 21:16:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-06 21:16:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=1892, Unknown=0, NotChecked=0, Total=2352 [2023-11-06 21:16:49,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 266 [2023-11-06 21:16:49,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 665 transitions, 10931 flow. Second operand has 49 states, 49 states have (on average 96.44897959183673) internal successors, (4726), 49 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states 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 21:16:49,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:16:49,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 266 [2023-11-06 21:16:49,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:17:23,634 INFO L124 PetriNetUnfolderBase]: 4516/12801 cut-off events. [2023-11-06 21:17:23,634 INFO L125 PetriNetUnfolderBase]: For 1605379/1605379 co-relation queries the response was YES. [2023-11-06 21:17:23,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144895 conditions, 12801 events. 4516/12801 cut-off events. For 1605379/1605379 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 79375 event pairs, 96 based on Foata normal form. 261/13062 useless extension candidates. Maximal degree in co-relation 144744. Up to 3685 conditions per place. [2023-11-06 21:17:23,958 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 1942 selfloop transitions, 2171 changer transitions 368/4483 dead transitions. [2023-11-06 21:17:23,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1079 places, 4483 transitions, 85569 flow [2023-11-06 21:17:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 584 states. [2023-11-06 21:17:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2023-11-06 21:17:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 57338 transitions. [2023-11-06 21:17:24,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36910340920795137 [2023-11-06 21:17:24,043 INFO L72 ComplementDD]: Start complementDD. Operand 584 states and 57338 transitions. [2023-11-06 21:17:24,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 584 states and 57338 transitions. [2023-11-06 21:17:24,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:17:24,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 584 states and 57338 transitions. [2023-11-06 21:17:24,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 585 states, 584 states have (on average 98.18150684931507) internal successors, (57338), 584 states have internal predecessors, (57338), 0 states have call successors, (0), 0 states 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 21:17:24,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 585 states, 585 states have (on average 266.0) internal successors, (155610), 585 states have internal predecessors, (155610), 0 states have call successors, (0), 0 states 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 21:17:24,581 INFO L81 ComplementDD]: Finished complementDD. Result has 585 states, 585 states have (on average 266.0) internal successors, (155610), 585 states have internal predecessors, (155610), 0 states have call successors, (0), 0 states 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 21:17:24,581 INFO L175 Difference]: Start difference. First operand has 496 places, 665 transitions, 10931 flow. Second operand 584 states and 57338 transitions. [2023-11-06 21:17:24,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1079 places, 4483 transitions, 85569 flow [2023-11-06 21:17:27,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1068 places, 4483 transitions, 77897 flow, removed 3553 selfloop flow, removed 11 redundant places. [2023-11-06 21:17:27,290 INFO L231 Difference]: Finished difference. Result has 1243 places, 2334 transitions, 50344 flow [2023-11-06 21:17:27,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=10108, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=584, PETRI_FLOW=50344, PETRI_PLACES=1243, PETRI_TRANSITIONS=2334} [2023-11-06 21:17:27,292 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1214 predicate places. [2023-11-06 21:17:27,292 INFO L495 AbstractCegarLoop]: Abstraction has has 1243 places, 2334 transitions, 50344 flow [2023-11-06 21:17:27,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 96.44897959183673) internal successors, (4726), 49 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states 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 21:17:27,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:17:27,293 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 24, 23, 16, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:17:27,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:17:27,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 21:17:27,493 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-06 21:17:27,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:17:27,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2107147345, now seen corresponding path program 5 times [2023-11-06 21:17:27,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:17:27,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634824232] [2023-11-06 21:17:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:17:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:17:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:17:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:17:28,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:28,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634824232] [2023-11-06 21:17:28,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634824232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:28,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006286082] [2023-11-06 21:17:28,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:17:28,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:17:28,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:17:28,575 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:17:28,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f244b2c4-161f-43e0-83ef-84890ff41449/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 21:17:28,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-11-06 21:17:28,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:17:28,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:17:28,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:17:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 574 proven. 268 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-06 21:17:29,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 574 proven. 268 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-06 21:17:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006286082] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:17:29,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:17:29,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 17, 17] total 58 [2023-11-06 21:17:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271789364] [2023-11-06 21:17:29,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:29,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-06 21:17:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-06 21:17:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2023-11-06 21:17:30,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 266 [2023-11-06 21:17:30,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1243 places, 2334 transitions, 50344 flow. Second operand has 58 states, 58 states have (on average 96.41379310344827) internal successors, (5592), 58 states have internal predecessors, (5592), 0 states have call successors, (0), 0 states 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 21:17:30,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:17:30,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 266 [2023-11-06 21:17:30,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:18:45,957 INFO L124 PetriNetUnfolderBase]: 6714/20646 cut-off events. [2023-11-06 21:18:45,957 INFO L125 PetriNetUnfolderBase]: For 5923431/5923431 co-relation queries the response was YES. [2023-11-06 21:18:47,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271655 conditions, 20646 events. 6714/20646 cut-off events. For 5923431/5923431 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 151649 event pairs, 165 based on Foata normal form. 400/21046 useless extension candidates. Maximal degree in co-relation 271328. Up to 6671 conditions per place. [2023-11-06 21:18:47,288 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 2594 selfloop transitions, 3977 changer transitions 51/6624 dead transitions. [2023-11-06 21:18:47,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1984 places, 6624 transitions, 176727 flow [2023-11-06 21:18:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 755 states. [2023-11-06 21:18:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2023-11-06 21:18:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 73928 transitions. [2023-11-06 21:18:47,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3681123338146691 [2023-11-06 21:18:47,406 INFO L72 ComplementDD]: Start complementDD. Operand 755 states and 73928 transitions. [2023-11-06 21:18:47,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 755 states and 73928 transitions. [2023-11-06 21:18:47,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:18:47,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 755 states and 73928 transitions. [2023-11-06 21:18:47,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 756 states, 755 states have (on average 97.91788079470199) internal successors, (73928), 755 states have internal predecessors, (73928), 0 states have call successors, (0), 0 states 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 21:18:48,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 756 states, 756 states have (on average 266.0) internal successors, (201096), 756 states have internal predecessors, (201096), 0 states have call successors, (0), 0 states 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 21:18:48,031 INFO L81 ComplementDD]: Finished complementDD. Result has 756 states, 756 states have (on average 266.0) internal successors, (201096), 756 states have internal predecessors, (201096), 0 states have call successors, (0), 0 states 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 21:18:48,031 INFO L175 Difference]: Start difference. First operand has 1243 places, 2334 transitions, 50344 flow. Second operand 755 states and 73928 transitions. [2023-11-06 21:18:48,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1984 places, 6624 transitions, 176727 flow