./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/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_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/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_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:10:50,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:10:50,196 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:10:50,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:10:50,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:10:50,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:10:50,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:10:50,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:10:50,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:10:50,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:10:50,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:10:50,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:10:50,261 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:10:50,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:10:50,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:10:50,266 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:10:50,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:10:50,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:10:50,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:10:50,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:10:50,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:10:50,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:10:50,277 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:10:50,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:10:50,278 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:10:50,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:10:50,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:10:50,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:10:50,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:10:50,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:10:50,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:10:50,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:10:50,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:10:50,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:10:50,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:10:50,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:10:50,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:10:50,284 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:10:50,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:10:50,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:10:50,285 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:10:50,287 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_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2023-11-06 23:10:50,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:10:50,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:10:50,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:10:50,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:10:50,692 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:10:50,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-06 23:10:53,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:10:54,192 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:10:54,193 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-06 23:10:54,219 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/data/d6f5eeab4/813bdc6f9778464baa655b57eacc5df7/FLAG8f8fb0767 [2023-11-06 23:10:54,241 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/data/d6f5eeab4/813bdc6f9778464baa655b57eacc5df7 [2023-11-06 23:10:54,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:10:54,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:10:54,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:10:54,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:10:54,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:10:54,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:54" (1/1) ... [2023-11-06 23:10:54,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71445230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:54, skipping insertion in model container [2023-11-06 23:10:54,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:54" (1/1) ... [2023-11-06 23:10:54,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:10:55,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:10:55,061 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:10:55,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:10:55,247 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:10:55,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55 WrapperNode [2023-11-06 23:10:55,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:10:55,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:10:55,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:10:55,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:10:55,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,319 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 212 [2023-11-06 23:10:55,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:10:55,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:10:55,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:10:55,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:10:55,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:10:55,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:10:55,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:10:55,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:10:55,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (1/1) ... [2023-11-06 23:10:55,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:10:55,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:55,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:10:55,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:10:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:10:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:10:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:10:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:10:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:10:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:10:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 23:10:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 23:10:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:10:55,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:10:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:10:55,476 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 23:10:55,643 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:10:55,645 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:10:56,014 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:10:56,027 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:10:56,027 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-06 23:10:56,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:56 BoogieIcfgContainer [2023-11-06 23:10:56,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:10:56,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:10:56,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:10:56,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:10:56,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:10:54" (1/3) ... [2023-11-06 23:10:56,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33449648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:10:56, skipping insertion in model container [2023-11-06 23:10:56,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:55" (2/3) ... [2023-11-06 23:10:56,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33449648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:10:56, skipping insertion in model container [2023-11-06 23:10:56,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:56" (3/3) ... [2023-11-06 23:10:56,042 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2023-11-06 23:10:56,052 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:10:56,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:10:56,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 23:10:56,067 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:10:56,242 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 23:10:56,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 236 transitions, 479 flow [2023-11-06 23:10:56,437 INFO L124 PetriNetUnfolderBase]: 48/323 cut-off events. [2023-11-06 23:10:56,438 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:10:56,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 323 events. 48/323 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1152 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-11-06 23:10:56,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 236 transitions, 479 flow [2023-11-06 23:10:56,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 233 transitions, 473 flow [2023-11-06 23:10:56,474 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:10:56,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 233 transitions, 473 flow [2023-11-06 23:10:56,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 233 transitions, 473 flow [2023-11-06 23:10:56,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 233 transitions, 473 flow [2023-11-06 23:10:56,603 INFO L124 PetriNetUnfolderBase]: 47/320 cut-off events. [2023-11-06 23:10:56,603 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:10:56,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 320 events. 47/320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1156 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-11-06 23:10:56,621 INFO L119 LiptonReduction]: Number of co-enabled transitions 16296 [2023-11-06 23:11:01,517 INFO L134 LiptonReduction]: Checked pairs total: 26159 [2023-11-06 23:11:01,524 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-11-06 23:11:01,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:11:01,563 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;@698fd06d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:11:01,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-06 23:11:01,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:11:01,567 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:11:01,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:11:01,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:01,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:11:01,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 23:11:01,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash 29833, now seen corresponding path program 1 times [2023-11-06 23:11:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:01,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156184431] [2023-11-06 23:11:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:01,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:01,954 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 23:11:01,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156184431] [2023-11-06 23:11:01,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156184431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:01,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:01,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:11:01,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905269571] [2023-11-06 23:11:01,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:01,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:11:02,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-06 23:11:02,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 80 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 23:11:02,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:02,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-06 23:11:02,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:02,343 INFO L124 PetriNetUnfolderBase]: 473/1001 cut-off events. [2023-11-06 23:11:02,343 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:11:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 1001 events. 473/1001 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5317 event pairs, 432 based on Foata normal form. 111/820 useless extension candidates. Maximal degree in co-relation 1874. Up to 936 conditions per place. [2023-11-06 23:11:02,356 INFO L140 encePairwiseOnDemand]: 427/455 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-06 23:11:02,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 223 flow [2023-11-06 23:11:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:11:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-11-06 23:11:02,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901098901098901 [2023-11-06 23:11:02,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-11-06 23:11:02,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-11-06 23:11:02,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:02,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-11-06 23:11:02,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states 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 23:11:02,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 23:11:02,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 23:11:02,410 INFO L175 Difference]: Start difference. First operand has 58 places, 80 transitions, 167 flow. Second operand 3 states and 669 transitions. [2023-11-06 23:11:02,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 223 flow [2023-11-06 23:11:02,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 223 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:11:02,420 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 133 flow [2023-11-06 23:11:02,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-06 23:11:02,429 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-11-06 23:11:02,430 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 133 flow [2023-11-06 23:11:02,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 23:11:02,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:02,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:11:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:11:02,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 23:11:02,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash 926911, now seen corresponding path program 1 times [2023-11-06 23:11:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:02,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822144987] [2023-11-06 23:11:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:02,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:02,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:02,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822144987] [2023-11-06 23:11:02,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822144987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:02,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539377125] [2023-11-06 23:11:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:02,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:02,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:02,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:11:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:02,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:11:02,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:02,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539377125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:02,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:02,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 23:11:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468949089] [2023-11-06 23:11:02,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:02,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:11:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:11:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:11:02,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-06 23:11:02,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 23:11:02,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:02,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-06 23:11:02,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:02,989 INFO L124 PetriNetUnfolderBase]: 473/1000 cut-off events. [2023-11-06 23:11:02,990 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:11:02,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 1000 events. 473/1000 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5341 event pairs, 432 based on Foata normal form. 0/709 useless extension candidates. Maximal degree in co-relation 1936. Up to 933 conditions per place. [2023-11-06 23:11:03,000 INFO L140 encePairwiseOnDemand]: 451/455 looper letters, 47 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-11-06 23:11:03,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 229 flow [2023-11-06 23:11:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:11:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:11:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 839 transitions. [2023-11-06 23:11:03,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460989010989011 [2023-11-06 23:11:03,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 839 transitions. [2023-11-06 23:11:03,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 839 transitions. [2023-11-06 23:11:03,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:03,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 839 transitions. [2023-11-06 23:11:03,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 23:11:03,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 455.0) internal successors, (2275), 5 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states 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 23:11:03,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 455.0) internal successors, (2275), 5 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states 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 23:11:03,026 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 133 flow. Second operand 4 states and 839 transitions. [2023-11-06 23:11:03,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 229 flow [2023-11-06 23:11:03,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 225 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:11:03,030 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 131 flow [2023-11-06 23:11:03,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-11-06 23:11:03,031 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-06 23:11:03,032 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 131 flow [2023-11-06 23:11:03,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 23:11:03,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:03,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:11:03,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:03,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:03,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 23:11:03,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1846244778, now seen corresponding path program 1 times [2023-11-06 23:11:03,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:03,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147015672] [2023-11-06 23:11:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:03,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147015672] [2023-11-06 23:11:03,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147015672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:03,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793204294] [2023-11-06 23:11:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:03,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:03,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:03,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:11:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:11:03,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:03,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:11:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793204294] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:11:03,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:11:03,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:11:03,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877691596] [2023-11-06 23:11:03,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:11:03,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:11:03,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:11:03,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:11:03,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 455 [2023-11-06 23:11:03,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states 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 23:11:03,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:03,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 455 [2023-11-06 23:11:03,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:03,722 INFO L124 PetriNetUnfolderBase]: 473/1003 cut-off events. [2023-11-06 23:11:03,722 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:11:03,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 1003 events. 473/1003 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5341 event pairs, 432 based on Foata normal form. 3/716 useless extension candidates. Maximal degree in co-relation 1930. Up to 935 conditions per place. [2023-11-06 23:11:03,730 INFO L140 encePairwiseOnDemand]: 452/455 looper letters, 48 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-06 23:11:03,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 249 flow [2023-11-06 23:11:03,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:11:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:11:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1232 transitions. [2023-11-06 23:11:03,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2023-11-06 23:11:03,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1232 transitions. [2023-11-06 23:11:03,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1232 transitions. [2023-11-06 23:11:03,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:03,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1232 transitions. [2023-11-06 23:11:03,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 23:11:03,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 455.0) internal successors, (3185), 7 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states 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 23:11:03,750 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 455.0) internal successors, (3185), 7 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states 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 23:11:03,750 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 131 flow. Second operand 6 states and 1232 transitions. [2023-11-06 23:11:03,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 249 flow [2023-11-06 23:11:03,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:11:03,754 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 163 flow [2023-11-06 23:11:03,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-11-06 23:11:03,755 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-06 23:11:03,755 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 163 flow [2023-11-06 23:11:03,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states 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 23:11:03,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:03,757 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-06 23:11:03,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:03,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:03,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 23:11:03,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:03,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2004503584, now seen corresponding path program 2 times [2023-11-06 23:11:03,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:03,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102680505] [2023-11-06 23:11:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:11:04,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102680505] [2023-11-06 23:11:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102680505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:04,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:11:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818458779] [2023-11-06 23:11:04,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:04,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:11:04,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 455 [2023-11-06 23:11:04,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 23:11:04,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:04,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 455 [2023-11-06 23:11:04,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:04,337 INFO L124 PetriNetUnfolderBase]: 417/904 cut-off events. [2023-11-06 23:11:04,337 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 23:11:04,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 904 events. 417/904 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5411 event pairs, 0 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1743. Up to 824 conditions per place. [2023-11-06 23:11:04,346 INFO L140 encePairwiseOnDemand]: 450/455 looper letters, 68 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-06 23:11:04,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 337 flow [2023-11-06 23:11:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:11:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-11-06 23:11:04,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2023-11-06 23:11:04,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-11-06 23:11:04,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-11-06 23:11:04,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:04,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-11-06 23:11:04,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:11:04,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 23:11:04,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 455.0) internal successors, (1820), 4 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 23:11:04,362 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 163 flow. Second operand 3 states and 660 transitions. [2023-11-06 23:11:04,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 337 flow [2023-11-06 23:11:04,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 323 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 23:11:04,368 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 153 flow [2023-11-06 23:11:04,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-11-06 23:11:04,369 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-06 23:11:04,369 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 153 flow [2023-11-06 23:11:04,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 23:11:04,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:04,370 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 23:11:04,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:11:04,371 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 23:11:04,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:04,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2112314046, now seen corresponding path program 1 times [2023-11-06 23:11:04,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:04,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244657489] [2023-11-06 23:11:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:04,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:11:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244657489] [2023-11-06 23:11:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244657489] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723180416] [2023-11-06 23:11:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:04,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:04,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:11:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:04,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:11:04,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:11:04,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:11:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:11:04,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723180416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:11:04,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:11:04,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:11:04,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695920293] [2023-11-06 23:11:04,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:11:04,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:11:04,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:11:04,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:11:04,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 455 [2023-11-06 23:11:04,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 197.30769230769232) internal successors, (2565), 13 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 23:11:04,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:04,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 455 [2023-11-06 23:11:04,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:05,099 INFO L124 PetriNetUnfolderBase]: 438/907 cut-off events. [2023-11-06 23:11:05,099 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-06 23:11:05,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 907 events. 438/907 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4739 event pairs, 396 based on Foata normal form. 6/698 useless extension candidates. Maximal degree in co-relation 1798. Up to 841 conditions per place. [2023-11-06 23:11:05,108 INFO L140 encePairwiseOnDemand]: 452/455 looper letters, 46 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2023-11-06 23:11:05,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 303 flow [2023-11-06 23:11:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:11:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:11:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2415 transitions. [2023-11-06 23:11:05,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-11-06 23:11:05,120 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2415 transitions. [2023-11-06 23:11:05,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2415 transitions. [2023-11-06 23:11:05,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:05,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2415 transitions. [2023-11-06 23:11:05,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 201.25) internal successors, (2415), 12 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states 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 23:11:05,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 455.0) internal successors, (5915), 13 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states 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 23:11:05,147 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 455.0) internal successors, (5915), 13 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states 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 23:11:05,147 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 153 flow. Second operand 12 states and 2415 transitions. [2023-11-06 23:11:05,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 303 flow [2023-11-06 23:11:05,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:11:05,153 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 233 flow [2023-11-06 23:11:05,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-11-06 23:11:05,154 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-06 23:11:05,154 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 233 flow [2023-11-06 23:11:05,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.30769230769232) internal successors, (2565), 13 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 23:11:05,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:05,156 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 23:11:05,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:05,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:05,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 23:11:05,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1805609218, now seen corresponding path program 2 times [2023-11-06 23:11:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:05,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790929345] [2023-11-06 23:11:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:11:05,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:11:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:11:05,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:11:05,494 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:11:05,495 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-06 23:11:05,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-06 23:11:05,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-06 23:11:05,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-06 23:11:05,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-06 23:11:05,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-06 23:11:05,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-06 23:11:05,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-06 23:11:05,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-06 23:11:05,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-06 23:11:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-06 23:11:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-06 23:11:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-06 23:11:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-06 23:11:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-06 23:11:05,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-06 23:11:05,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-06 23:11:05,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-06 23:11:05,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-06 23:11:05,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:11:05,538 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-06 23:11:05,542 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:11:05,542 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 23:11:05,612 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:11:05,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 322 transitions, 660 flow [2023-11-06 23:11:05,723 INFO L124 PetriNetUnfolderBase]: 80/534 cut-off events. [2023-11-06 23:11:05,724 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-06 23:11:05,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 534 events. 80/534 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2341 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2023-11-06 23:11:05,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 322 transitions, 660 flow [2023-11-06 23:11:05,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 322 transitions, 660 flow [2023-11-06 23:11:05,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:11:05,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 322 transitions, 660 flow [2023-11-06 23:11:05,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 322 transitions, 660 flow [2023-11-06 23:11:05,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 322 transitions, 660 flow [2023-11-06 23:11:05,844 INFO L124 PetriNetUnfolderBase]: 80/534 cut-off events. [2023-11-06 23:11:05,844 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-06 23:11:05,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 534 events. 80/534 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2341 event pairs, 0 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2023-11-06 23:11:05,895 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2023-11-06 23:11:11,801 INFO L134 LiptonReduction]: Checked pairs total: 81143 [2023-11-06 23:11:11,801 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-11-06 23:11:11,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:11:11,804 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;@698fd06d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:11:11,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-06 23:11:11,806 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:11:11,806 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:11:11,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:11:11,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:11,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:11:11,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:11,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash 52310, now seen corresponding path program 1 times [2023-11-06 23:11:11,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:11,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783979241] [2023-11-06 23:11:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:11,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:11,837 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 23:11:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783979241] [2023-11-06 23:11:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783979241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:11,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:11,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:11:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064577898] [2023-11-06 23:11:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:11:11,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-06 23:11:11,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 23:11:11,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:11,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-06 23:11:11,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:15,487 INFO L124 PetriNetUnfolderBase]: 17246/27246 cut-off events. [2023-11-06 23:11:15,488 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-06 23:11:15,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52632 conditions, 27246 events. 17246/27246 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 204301 event pairs, 16184 based on Foata normal form. 4497/23565 useless extension candidates. Maximal degree in co-relation 24620. Up to 25288 conditions per place. [2023-11-06 23:11:15,800 INFO L140 encePairwiseOnDemand]: 580/617 looper letters, 69 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-06 23:11:15,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 326 flow [2023-11-06 23:11:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:11:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-11-06 23:11:15,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49054565099945974 [2023-11-06 23:11:15,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-11-06 23:11:15,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-11-06 23:11:15,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:15,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-11-06 23:11:15,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states 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 23:11:15,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 23:11:15,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 23:11:15,814 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 248 flow. Second operand 3 states and 908 transitions. [2023-11-06 23:11:15,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 326 flow [2023-11-06 23:11:15,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:11:15,820 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 196 flow [2023-11-06 23:11:15,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-11-06 23:11:15,822 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-11-06 23:11:15,823 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 196 flow [2023-11-06 23:11:15,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 23:11:15,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:15,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:11:15,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:11:15,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:15,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1624816, now seen corresponding path program 1 times [2023-11-06 23:11:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676807826] [2023-11-06 23:11:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:15,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676807826] [2023-11-06 23:11:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676807826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:15,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:15,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:11:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410987512] [2023-11-06 23:11:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:15,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:11:15,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-06 23:11:15,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 23:11:15,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:15,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-06 23:11:15,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:18,813 INFO L124 PetriNetUnfolderBase]: 17246/27245 cut-off events. [2023-11-06 23:11:18,813 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-06 23:11:18,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52637 conditions, 27245 events. 17246/27245 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 204445 event pairs, 16184 based on Foata normal form. 0/19068 useless extension candidates. Maximal degree in co-relation 52624. Up to 25285 conditions per place. [2023-11-06 23:11:19,081 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 68 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-06 23:11:19,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 332 flow [2023-11-06 23:11:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:11:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2023-11-06 23:11:19,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4705564559697461 [2023-11-06 23:11:19,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2023-11-06 23:11:19,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2023-11-06 23:11:19,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:19,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2023-11-06 23:11:19,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states 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 23:11:19,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 23:11:19,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 23:11:19,103 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 196 flow. Second operand 3 states and 871 transitions. [2023-11-06 23:11:19,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 332 flow [2023-11-06 23:11:19,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:11:19,110 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 192 flow [2023-11-06 23:11:19,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2023-11-06 23:11:19,112 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-11-06 23:11:19,113 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 192 flow [2023-11-06 23:11:19,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 23:11:19,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:19,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:19,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:11:19,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:19,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:19,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1725381562, now seen corresponding path program 1 times [2023-11-06 23:11:19,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:19,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205488758] [2023-11-06 23:11:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:19,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:19,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205488758] [2023-11-06 23:11:19,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205488758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:19,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26639583] [2023-11-06 23:11:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:19,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:19,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:19,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:19,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:11:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:19,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:11:19,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:19,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:11:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:19,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26639583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:11:19,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:11:19,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:11:19,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157558968] [2023-11-06 23:11:19,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:11:19,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:11:19,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:11:19,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:11:19,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 23:11:19,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 267.57142857142856) internal successors, (1873), 7 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states 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 23:11:19,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:19,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 23:11:19,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:22,060 INFO L124 PetriNetUnfolderBase]: 17246/27248 cut-off events. [2023-11-06 23:11:22,061 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-06 23:11:22,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52646 conditions, 27248 events. 17246/27248 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 204389 event pairs, 16184 based on Foata normal form. 3/19075 useless extension candidates. Maximal degree in co-relation 52618. Up to 25287 conditions per place. [2023-11-06 23:11:22,268 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-11-06 23:11:22,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 350 flow [2023-11-06 23:11:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:11:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:11:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1672 transitions. [2023-11-06 23:11:22,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516477579686656 [2023-11-06 23:11:22,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1672 transitions. [2023-11-06 23:11:22,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1672 transitions. [2023-11-06 23:11:22,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:22,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1672 transitions. [2023-11-06 23:11:22,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 278.6666666666667) internal successors, (1672), 6 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states 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 23:11:22,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states 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 23:11:22,301 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states 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 23:11:22,302 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 192 flow. Second operand 6 states and 1672 transitions. [2023-11-06 23:11:22,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 350 flow [2023-11-06 23:11:22,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:11:22,307 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 224 flow [2023-11-06 23:11:22,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2023-11-06 23:11:22,311 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2023-11-06 23:11:22,311 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 224 flow [2023-11-06 23:11:22,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.57142857142856) internal successors, (1873), 7 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states 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 23:11:22,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:22,313 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:22,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:22,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:22,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:22,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:22,520 INFO L85 PathProgramCache]: Analyzing trace with hash -688082784, now seen corresponding path program 2 times [2023-11-06 23:11:22,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:22,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837034062] [2023-11-06 23:11:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:22,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:11:22,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837034062] [2023-11-06 23:11:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837034062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:22,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:22,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:11:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521603407] [2023-11-06 23:11:22,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:22,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:22,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:22,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:11:22,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-06 23:11:22,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 23:11:22,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:22,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-06 23:11:22,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:25,210 INFO L124 PetriNetUnfolderBase]: 17367/27083 cut-off events. [2023-11-06 23:11:25,210 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-06 23:11:25,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52405 conditions, 27083 events. 17367/27083 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 200242 event pairs, 13175 based on Foata normal form. 0/18987 useless extension candidates. Maximal degree in co-relation 52370. Up to 25182 conditions per place. [2023-11-06 23:11:25,380 INFO L140 encePairwiseOnDemand]: 612/617 looper letters, 90 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-11-06 23:11:25,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 105 transitions, 446 flow [2023-11-06 23:11:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:11:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-11-06 23:11:25,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48190167477039436 [2023-11-06 23:11:25,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-11-06 23:11:25,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-11-06 23:11:25,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:25,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-11-06 23:11:25,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 23:11:25,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 23:11:25,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 23:11:25,398 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 224 flow. Second operand 3 states and 892 transitions. [2023-11-06 23:11:25,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 105 transitions, 446 flow [2023-11-06 23:11:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 432 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 23:11:25,402 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 226 flow [2023-11-06 23:11:25,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-11-06 23:11:25,404 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2023-11-06 23:11:25,404 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 226 flow [2023-11-06 23:11:25,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 23:11:25,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:25,405 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:11:25,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:25,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1765353789, now seen corresponding path program 1 times [2023-11-06 23:11:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144094945] [2023-11-06 23:11:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:25,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144094945] [2023-11-06 23:11:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144094945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035823563] [2023-11-06 23:11:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:25,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:25,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:25,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:25,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:11:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:11:25,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:25,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:11:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035823563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:11:25,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:11:25,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:11:25,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431286556] [2023-11-06 23:11:25,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:11:25,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:11:25,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:11:25,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:11:25,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 23:11:25,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 226 flow. Second operand has 13 states, 13 states have (on average 267.46153846153845) internal successors, (3477), 13 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states 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 23:11:25,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:25,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 23:11:25,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:28,665 INFO L124 PetriNetUnfolderBase]: 17299/26952 cut-off events. [2023-11-06 23:11:28,665 INFO L125 PetriNetUnfolderBase]: For 869/869 co-relation queries the response was YES. [2023-11-06 23:11:28,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53638 conditions, 26952 events. 17299/26952 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 199523 event pairs, 16150 based on Foata normal form. 6/19152 useless extension candidates. Maximal degree in co-relation 53584. Up to 25198 conditions per place. [2023-11-06 23:11:28,807 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 69 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-11-06 23:11:28,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 422 flow [2023-11-06 23:11:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:11:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:11:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3277 transitions. [2023-11-06 23:11:28,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44259859535386276 [2023-11-06 23:11:28,822 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3277 transitions. [2023-11-06 23:11:28,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3277 transitions. [2023-11-06 23:11:28,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:28,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3277 transitions. [2023-11-06 23:11:28,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 273.0833333333333) internal successors, (3277), 12 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states 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 23:11:28,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states 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 23:11:28,857 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states 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 23:11:28,857 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 226 flow. Second operand 12 states and 3277 transitions. [2023-11-06 23:11:28,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 422 flow [2023-11-06 23:11:28,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:11:28,862 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 308 flow [2023-11-06 23:11:28,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2023-11-06 23:11:28,864 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 26 predicate places. [2023-11-06 23:11:28,864 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 308 flow [2023-11-06 23:11:28,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 267.46153846153845) internal successors, (3477), 13 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states 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 23:11:28,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:28,866 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:28,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:29,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:29,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:29,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:29,073 INFO L85 PathProgramCache]: Analyzing trace with hash -301365379, now seen corresponding path program 2 times [2023-11-06 23:11:29,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:29,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106836523] [2023-11-06 23:11:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:29,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:11:29,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:29,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106836523] [2023-11-06 23:11:29,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106836523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:29,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:29,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:11:29,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532246173] [2023-11-06 23:11:29,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:29,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:11:29,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:29,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:11:29,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:11:29,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 617 [2023-11-06 23:11:29,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states 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 23:11:29,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:29,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 617 [2023-11-06 23:11:29,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:33,940 INFO L124 PetriNetUnfolderBase]: 22033/35683 cut-off events. [2023-11-06 23:11:33,940 INFO L125 PetriNetUnfolderBase]: For 1179/1179 co-relation queries the response was YES. [2023-11-06 23:11:34,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71261 conditions, 35683 events. 22033/35683 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 292499 event pairs, 5970 based on Foata normal form. 0/26283 useless extension candidates. Maximal degree in co-relation 71183. Up to 21860 conditions per place. [2023-11-06 23:11:34,180 INFO L140 encePairwiseOnDemand]: 602/617 looper letters, 228 selfloop transitions, 25 changer transitions 0/266 dead transitions. [2023-11-06 23:11:34,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 266 transitions, 1216 flow [2023-11-06 23:11:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:11:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:11:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2054 transitions. [2023-11-06 23:11:34,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47557304931697153 [2023-11-06 23:11:34,193 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2054 transitions. [2023-11-06 23:11:34,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2054 transitions. [2023-11-06 23:11:34,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:34,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2054 transitions. [2023-11-06 23:11:34,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 293.42857142857144) internal successors, (2054), 7 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states 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 23:11:34,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states 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 23:11:34,213 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states 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 23:11:34,213 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 308 flow. Second operand 7 states and 2054 transitions. [2023-11-06 23:11:34,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 266 transitions, 1216 flow [2023-11-06 23:11:34,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 266 transitions, 1168 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-06 23:11:34,223 INFO L231 Difference]: Finished difference. Result has 114 places, 117 transitions, 424 flow [2023-11-06 23:11:34,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=114, PETRI_TRANSITIONS=117} [2023-11-06 23:11:34,225 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 31 predicate places. [2023-11-06 23:11:34,225 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 117 transitions, 424 flow [2023-11-06 23:11:34,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states 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 23:11:34,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:34,226 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:34,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:11:34,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:34,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash -855357098, now seen corresponding path program 1 times [2023-11-06 23:11:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:34,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108857248] [2023-11-06 23:11:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:34,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-06 23:11:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108857248] [2023-11-06 23:11:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108857248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:34,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:34,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:11:34,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893416595] [2023-11-06 23:11:34,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:34,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:34,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:34,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:34,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:11:34,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 617 [2023-11-06 23:11:34,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 117 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 23:11:34,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:34,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 617 [2023-11-06 23:11:34,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:38,416 INFO L124 PetriNetUnfolderBase]: 21267/34073 cut-off events. [2023-11-06 23:11:38,416 INFO L125 PetriNetUnfolderBase]: For 8167/8168 co-relation queries the response was YES. [2023-11-06 23:11:38,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78511 conditions, 34073 events. 21267/34073 cut-off events. For 8167/8168 co-relation queries the response was YES. Maximal size of possible extension queue 1380. Compared 274119 event pairs, 7420 based on Foata normal form. 0/26783 useless extension candidates. Maximal degree in co-relation 78452. Up to 28829 conditions per place. [2023-11-06 23:11:38,672 INFO L140 encePairwiseOnDemand]: 613/617 looper letters, 140 selfloop transitions, 6 changer transitions 0/159 dead transitions. [2023-11-06 23:11:38,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 846 flow [2023-11-06 23:11:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:11:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2023-11-06 23:11:38,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48730415991356024 [2023-11-06 23:11:38,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2023-11-06 23:11:38,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2023-11-06 23:11:38,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:38,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2023-11-06 23:11:38,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states 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 23:11:38,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 23:11:38,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states 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 23:11:38,688 INFO L175 Difference]: Start difference. First operand has 114 places, 117 transitions, 424 flow. Second operand 3 states and 902 transitions. [2023-11-06 23:11:38,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 846 flow [2023-11-06 23:11:38,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 159 transitions, 846 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:11:38,735 INFO L231 Difference]: Finished difference. Result has 116 places, 117 transitions, 446 flow [2023-11-06 23:11:38,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=116, PETRI_TRANSITIONS=117} [2023-11-06 23:11:38,736 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2023-11-06 23:11:38,736 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 117 transitions, 446 flow [2023-11-06 23:11:38,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 23:11:38,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:38,737 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:38,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:11:38,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:38,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash -855357164, now seen corresponding path program 1 times [2023-11-06 23:11:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:38,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277085234] [2023-11-06 23:11:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:11:38,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277085234] [2023-11-06 23:11:38,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277085234] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784463530] [2023-11-06 23:11:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:38,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:38,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:38,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:38,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:11:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:38,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:11:38,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:11:39,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:39,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784463530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:39,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:39,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:11:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825340119] [2023-11-06 23:11:39,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:39,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:11:39,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:39,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:11:39,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:11:39,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 617 [2023-11-06 23:11:39,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 117 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states 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 23:11:39,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:39,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 617 [2023-11-06 23:11:39,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:11:42,914 INFO L124 PetriNetUnfolderBase]: 20320/32530 cut-off events. [2023-11-06 23:11:42,915 INFO L125 PetriNetUnfolderBase]: For 12257/12257 co-relation queries the response was YES. [2023-11-06 23:11:43,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76456 conditions, 32530 events. 20320/32530 cut-off events. For 12257/12257 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 267608 event pairs, 2303 based on Foata normal form. 445/26288 useless extension candidates. Maximal degree in co-relation 76396. Up to 27564 conditions per place. [2023-11-06 23:11:43,155 INFO L140 encePairwiseOnDemand]: 613/617 looper letters, 157 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2023-11-06 23:11:43,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 173 transitions, 929 flow [2023-11-06 23:11:43,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:11:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:11:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2023-11-06 23:11:43,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095623987034036 [2023-11-06 23:11:43,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2023-11-06 23:11:43,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2023-11-06 23:11:43,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:11:43,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2023-11-06 23:11:43,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 23:11:43,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 617.0) internal successors, (3085), 5 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states 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 23:11:43,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 617.0) internal successors, (3085), 5 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states 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 23:11:43,172 INFO L175 Difference]: Start difference. First operand has 116 places, 117 transitions, 446 flow. Second operand 4 states and 1187 transitions. [2023-11-06 23:11:43,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 173 transitions, 929 flow [2023-11-06 23:11:43,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 173 transitions, 923 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:11:43,196 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 442 flow [2023-11-06 23:11:43,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=442, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2023-11-06 23:11:43,197 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 34 predicate places. [2023-11-06 23:11:43,197 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 442 flow [2023-11-06 23:11:43,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states 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 23:11:43,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:43,198 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 23:11:43,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:43,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddefdd8c-0c0e-4af5-bcd1-eb44115bfb06/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:11:43,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 23:11:43,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1659315828, now seen corresponding path program 1 times [2023-11-06 23:11:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:43,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461501584] [2023-11-06 23:11:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:11:43,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:11:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:11:43,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:11:43,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:11:43,485 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-06 23:11:43,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-06 23:11:43,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-06 23:11:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-06 23:11:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-06 23:11:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-06 23:11:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-06 23:11:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-06 23:11:43,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-06 23:11:43,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-06 23:11:43,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-06 23:11:43,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-06 23:11:43,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-06 23:11:43,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-06 23:11:43,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-11-06 23:11:43,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-11-06 23:11:43,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-11-06 23:11:43,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-06 23:11:43,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-06 23:11:43,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-06 23:11:43,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-06 23:11:43,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-06 23:11:43,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-06 23:11:43,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:11:43,489 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-11-06 23:11:43,491 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:11:43,491 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 23:11:43,546 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:11:43,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 408 transitions, 843 flow [2023-11-06 23:11:43,898 INFO L124 PetriNetUnfolderBase]: 117/788 cut-off events. [2023-11-06 23:11:43,898 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-06 23:11:43,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 788 events. 117/788 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3730 event pairs, 1 based on Foata normal form. 0/617 useless extension candidates. Maximal degree in co-relation 542. Up to 16 conditions per place. [2023-11-06 23:11:43,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 408 transitions, 843 flow [2023-11-06 23:11:43,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 408 transitions, 843 flow [2023-11-06 23:11:43,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:11:43,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 408 transitions, 843 flow [2023-11-06 23:11:43,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 408 transitions, 843 flow [2023-11-06 23:11:43,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 408 transitions, 843 flow [2023-11-06 23:11:44,095 INFO L124 PetriNetUnfolderBase]: 117/788 cut-off events. [2023-11-06 23:11:44,095 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-06 23:11:44,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 788 events. 117/788 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3730 event pairs, 1 based on Foata normal form. 0/617 useless extension candidates. Maximal degree in co-relation 542. Up to 16 conditions per place. [2023-11-06 23:11:44,168 INFO L119 LiptonReduction]: Number of co-enabled transitions 96768 [2023-11-06 23:11:50,761 INFO L134 LiptonReduction]: Checked pairs total: 163896 [2023-11-06 23:11:50,762 INFO L136 LiptonReduction]: Total number of compositions: 379 [2023-11-06 23:11:50,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:11:50,764 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;@698fd06d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:11:50,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-06 23:11:50,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:11:50,766 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:11:50,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:11:50,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:11:50,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:11:50,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-06 23:11:50,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:50,767 INFO L85 PathProgramCache]: Analyzing trace with hash 80093, now seen corresponding path program 1 times [2023-11-06 23:11:50,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:50,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502987797] [2023-11-06 23:11:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:50,797 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 23:11:50,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:50,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502987797] [2023-11-06 23:11:50,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502987797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:50,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:50,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:11:50,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178814630] [2023-11-06 23:11:50,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:50,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:50,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:11:50,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 787 [2023-11-06 23:11:50,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 151 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 23:11:50,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:11:50,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 787 [2023-11-06 23:11:50,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand