./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:58,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:58,386 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:07:58,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:58,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:58,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:58,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:58,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:58,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:58,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:58,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:58,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:58,454 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:58,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:58,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:07:58,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:58,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:58,459 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:58,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:58,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:07:58,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:58,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:07:58,462 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:07:58,462 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:07:58,463 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:58,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:07:58,464 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:58,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:58,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:58,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:58,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:58,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:58,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:58,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:07:58,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:58,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:58,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:58,471 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:07:58,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:58,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:58,472 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:58,472 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_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2023-11-12 02:07:58,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:58,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:58,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:58,908 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:58,909 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:58,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/queue_ok_longest.i [2023-11-12 02:08:02,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:02,413 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:02,422 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/sv-benchmarks/c/pthread/queue_ok_longest.i [2023-11-12 02:08:02,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/data/12a7a0012/d30e67bb0ad843d18f77914b98a4e6a8/FLAG075b62a00 [2023-11-12 02:08:02,459 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/data/12a7a0012/d30e67bb0ad843d18f77914b98a4e6a8 [2023-11-12 02:08:02,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:02,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:02,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:02,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:02,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:02,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:02" (1/1) ... [2023-11-12 02:08:02,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea434a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:02, skipping insertion in model container [2023-11-12 02:08:02,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:02" (1/1) ... [2023-11-12 02:08:02,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:03,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:03,181 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:03,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:03,386 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:03,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03 WrapperNode [2023-11-12 02:08:03,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:03,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:03,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:03,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:03,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,456 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 220 [2023-11-12 02:08:03,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:03,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:03,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:03,458 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:03,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,489 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:03,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:03,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:03,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:03,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (1/1) ... [2023-11-12 02:08:03,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:03,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:03,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:03,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:08:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:08:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:08:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:03,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:03,628 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:08:03,838 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:03,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:04,237 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:04,247 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:04,247 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:08:04,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:04 BoogieIcfgContainer [2023-11-12 02:08:04,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:04,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:04,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:04,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:04,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:08:02" (1/3) ... [2023-11-12 02:08:04,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3920798b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:04, skipping insertion in model container [2023-11-12 02:08:04,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:03" (2/3) ... [2023-11-12 02:08:04,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3920798b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:04, skipping insertion in model container [2023-11-12 02:08:04,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:04" (3/3) ... [2023-11-12 02:08:04,262 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2023-11-12 02:08:04,271 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:08:04,283 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:04,283 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 02:08:04,283 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:08:04,472 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:08:04,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 530 flow [2023-11-12 02:08:04,690 INFO L124 PetriNetUnfolderBase]: 15/256 cut-off events. [2023-11-12 02:08:04,690 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:08:04,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 477 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2023-11-12 02:08:04,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 530 flow [2023-11-12 02:08:04,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 246 transitions, 501 flow [2023-11-12 02:08:04,736 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:08:04,752 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-12 02:08:04,755 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-12 02:08:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 246 transitions, 501 flow [2023-11-12 02:08:04,871 INFO L124 PetriNetUnfolderBase]: 15/246 cut-off events. [2023-11-12 02:08:04,872 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:04,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 246 events. 15/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 393 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2023-11-12 02:08:04,891 INFO L119 LiptonReduction]: Number of co-enabled transitions 15300 [2023-11-12 02:08:13,459 INFO L134 LiptonReduction]: Checked pairs total: 32311 [2023-11-12 02:08:13,461 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-11-12 02:08:13,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:13,502 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e9a1f61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:13,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-12 02:08:13,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:08:13,521 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-12 02:08:13,522 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:13,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:13,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:13,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:13,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash 665727335, now seen corresponding path program 1 times [2023-11-12 02:08:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:13,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031751039] [2023-11-12 02:08:13,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:13,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:14,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:14,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031751039] [2023-11-12 02:08:14,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031751039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:14,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:14,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616165580] [2023-11-12 02:08:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:14,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:14,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:14,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:14,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 499 [2023-11-12 02:08:15,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 230.4) internal successors, (1152), 5 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:15,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:15,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 499 [2023-11-12 02:08:15,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:15,471 INFO L124 PetriNetUnfolderBase]: 1510/2487 cut-off events. [2023-11-12 02:08:15,472 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-12 02:08:15,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4982 conditions, 2487 events. 1510/2487 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12471 event pairs, 1101 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 4762. Up to 2421 conditions per place. [2023-11-12 02:08:15,495 INFO L140 encePairwiseOnDemand]: 491/499 looper letters, 54 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-11-12 02:08:15,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 275 flow [2023-11-12 02:08:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:08:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1439 transitions. [2023-11-12 02:08:15,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48062792251169006 [2023-11-12 02:08:15,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1439 transitions. [2023-11-12 02:08:15,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1439 transitions. [2023-11-12 02:08:15,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:15,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1439 transitions. [2023-11-12 02:08:15,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.83333333333334) internal successors, (1439), 6 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:15,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:15,572 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:15,574 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 125 flow. Second operand 6 states and 1439 transitions. [2023-11-12 02:08:15,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 275 flow [2023-11-12 02:08:15,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:15,587 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 180 flow [2023-11-12 02:08:15,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-11-12 02:08:15,594 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-11-12 02:08:15,594 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 180 flow [2023-11-12 02:08:15,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.4) internal successors, (1152), 5 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:15,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:15,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:15,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:08:15,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:15,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash -837658795, now seen corresponding path program 1 times [2023-11-12 02:08:15,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:15,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735398267] [2023-11-12 02:08:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:15,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:16,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:16,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735398267] [2023-11-12 02:08:16,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735398267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:16,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325979414] [2023-11-12 02:08:16,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:16,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:16,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:16,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:16,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:16,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 499 [2023-11-12 02:08:16,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 224.33333333333334) internal successors, (1346), 6 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:16,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:16,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 499 [2023-11-12 02:08:16,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:17,563 INFO L124 PetriNetUnfolderBase]: 2247/3738 cut-off events. [2023-11-12 02:08:17,563 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2023-11-12 02:08:17,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8012 conditions, 3738 events. 2247/3738 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 20655 event pairs, 409 based on Foata normal form. 0/2856 useless extension candidates. Maximal degree in co-relation 6886. Up to 2505 conditions per place. [2023-11-12 02:08:17,597 INFO L140 encePairwiseOnDemand]: 489/499 looper letters, 131 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2023-11-12 02:08:17,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 159 transitions, 699 flow [2023-11-12 02:08:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:08:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:08:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1487 transitions. [2023-11-12 02:08:17,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49665998663994654 [2023-11-12 02:08:17,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1487 transitions. [2023-11-12 02:08:17,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1487 transitions. [2023-11-12 02:08:17,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:17,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1487 transitions. [2023-11-12 02:08:17,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.83333333333334) internal successors, (1487), 6 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:17,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:17,627 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:17,628 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 180 flow. Second operand 6 states and 1487 transitions. [2023-11-12 02:08:17,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 159 transitions, 699 flow [2023-11-12 02:08:17,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 159 transitions, 699 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:08:17,645 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 315 flow [2023-11-12 02:08:17,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2023-11-12 02:08:17,647 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-11-12 02:08:17,647 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 315 flow [2023-11-12 02:08:17,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.33333333333334) internal successors, (1346), 6 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:17,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:17,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:17,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:08:17,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:17,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:17,651 INFO L85 PathProgramCache]: Analyzing trace with hash -836966844, now seen corresponding path program 1 times [2023-11-12 02:08:17,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:17,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013301463] [2023-11-12 02:08:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:17,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:18,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013301463] [2023-11-12 02:08:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013301463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:18,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:18,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141424483] [2023-11-12 02:08:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:18,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:18,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:18,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-12 02:08:18,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:18,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:18,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-12 02:08:18,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:19,433 INFO L124 PetriNetUnfolderBase]: 2396/4016 cut-off events. [2023-11-12 02:08:19,433 INFO L125 PetriNetUnfolderBase]: For 1705/1705 co-relation queries the response was YES. [2023-11-12 02:08:19,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9727 conditions, 4016 events. 2396/4016 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22589 event pairs, 491 based on Foata normal form. 58/3310 useless extension candidates. Maximal degree in co-relation 8473. Up to 2950 conditions per place. [2023-11-12 02:08:19,472 INFO L140 encePairwiseOnDemand]: 491/499 looper letters, 116 selfloop transitions, 19 changer transitions 0/142 dead transitions. [2023-11-12 02:08:19,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 738 flow [2023-11-12 02:08:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:08:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1248 transitions. [2023-11-12 02:08:19,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002004008016032 [2023-11-12 02:08:19,479 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1248 transitions. [2023-11-12 02:08:19,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1248 transitions. [2023-11-12 02:08:19,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:19,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1248 transitions. [2023-11-12 02:08:19,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.6) internal successors, (1248), 5 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:19,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 499.0) internal successors, (2994), 6 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:19,497 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 499.0) internal successors, (2994), 6 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:19,497 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 315 flow. Second operand 5 states and 1248 transitions. [2023-11-12 02:08:19,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 738 flow [2023-11-12 02:08:19,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 142 transitions, 724 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-12 02:08:19,533 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 409 flow [2023-11-12 02:08:19,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2023-11-12 02:08:19,534 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2023-11-12 02:08:19,535 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 409 flow [2023-11-12 02:08:19,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:19,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:19,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:19,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:08:19,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:19,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash 548683948, now seen corresponding path program 1 times [2023-11-12 02:08:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:19,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805981693] [2023-11-12 02:08:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:19,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:19,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805981693] [2023-11-12 02:08:19,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805981693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:19,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:19,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:19,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011181194] [2023-11-12 02:08:19,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:19,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:19,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:19,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:19,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:19,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 499 [2023-11-12 02:08:19,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:19,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:19,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 499 [2023-11-12 02:08:19,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:20,746 INFO L124 PetriNetUnfolderBase]: 3939/6447 cut-off events. [2023-11-12 02:08:20,746 INFO L125 PetriNetUnfolderBase]: For 6928/7044 co-relation queries the response was YES. [2023-11-12 02:08:20,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16548 conditions, 6447 events. 3939/6447 cut-off events. For 6928/7044 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 39626 event pairs, 1717 based on Foata normal form. 92/5216 useless extension candidates. Maximal degree in co-relation 14795. Up to 3839 conditions per place. [2023-11-12 02:08:20,816 INFO L140 encePairwiseOnDemand]: 492/499 looper letters, 162 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2023-11-12 02:08:20,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 177 transitions, 1139 flow [2023-11-12 02:08:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:08:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1065 transitions. [2023-11-12 02:08:20,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335671342685371 [2023-11-12 02:08:20,822 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1065 transitions. [2023-11-12 02:08:20,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1065 transitions. [2023-11-12 02:08:20,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:20,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1065 transitions. [2023-11-12 02:08:20,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 499.0) internal successors, (2495), 5 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 499.0) internal successors, (2495), 5 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,834 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 409 flow. Second operand 4 states and 1065 transitions. [2023-11-12 02:08:20,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 177 transitions, 1139 flow [2023-11-12 02:08:20,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 177 transitions, 1115 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-12 02:08:20,856 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 433 flow [2023-11-12 02:08:20,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=433, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2023-11-12 02:08:20,858 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-11-12 02:08:20,858 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 433 flow [2023-11-12 02:08:20,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:20,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:20,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:20,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:08:20,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:20,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1474196742, now seen corresponding path program 1 times [2023-11-12 02:08:20,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:20,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348211946] [2023-11-12 02:08:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:21,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:21,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348211946] [2023-11-12 02:08:21,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348211946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:21,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:21,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620056033] [2023-11-12 02:08:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:21,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:21,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 499 [2023-11-12 02:08:21,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 433 flow. Second operand has 6 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:21,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:21,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 499 [2023-11-12 02:08:21,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:23,000 INFO L124 PetriNetUnfolderBase]: 4113/6952 cut-off events. [2023-11-12 02:08:23,000 INFO L125 PetriNetUnfolderBase]: For 4209/4221 co-relation queries the response was YES. [2023-11-12 02:08:23,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17866 conditions, 6952 events. 4113/6952 cut-off events. For 4209/4221 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 43770 event pairs, 2441 based on Foata normal form. 0/5838 useless extension candidates. Maximal degree in co-relation 12853. Up to 6278 conditions per place. [2023-11-12 02:08:23,049 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 107 selfloop transitions, 16 changer transitions 0/130 dead transitions. [2023-11-12 02:08:23,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 797 flow [2023-11-12 02:08:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:08:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1693 transitions. [2023-11-12 02:08:23,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48468365302032634 [2023-11-12 02:08:23,056 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1693 transitions. [2023-11-12 02:08:23,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1693 transitions. [2023-11-12 02:08:23,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:23,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1693 transitions. [2023-11-12 02:08:23,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 241.85714285714286) internal successors, (1693), 7 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:23,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:23,071 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:23,071 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 433 flow. Second operand 7 states and 1693 transitions. [2023-11-12 02:08:23,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 797 flow [2023-11-12 02:08:23,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 793 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:23,088 INFO L231 Difference]: Finished difference. Result has 90 places, 97 transitions, 511 flow [2023-11-12 02:08:23,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=511, PETRI_PLACES=90, PETRI_TRANSITIONS=97} [2023-11-12 02:08:23,093 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 32 predicate places. [2023-11-12 02:08:23,094 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 97 transitions, 511 flow [2023-11-12 02:08:23,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:23,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:23,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:23,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:08:23,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:23,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash -931432907, now seen corresponding path program 1 times [2023-11-12 02:08:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705739521] [2023-11-12 02:08:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:23,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:23,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705739521] [2023-11-12 02:08:23,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705739521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:23,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341581484] [2023-11-12 02:08:23,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:23,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:23,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:23,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:23,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-12 02:08:23,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 226.57142857142858) internal successors, (1586), 7 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:23,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:23,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-12 02:08:23,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:25,625 INFO L124 PetriNetUnfolderBase]: 5018/8384 cut-off events. [2023-11-12 02:08:25,625 INFO L125 PetriNetUnfolderBase]: For 5011/5055 co-relation queries the response was YES. [2023-11-12 02:08:25,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22107 conditions, 8384 events. 5018/8384 cut-off events. For 5011/5055 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 53179 event pairs, 938 based on Foata normal form. 199/7572 useless extension candidates. Maximal degree in co-relation 19559. Up to 5350 conditions per place. [2023-11-12 02:08:25,707 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 182 selfloop transitions, 27 changer transitions 0/216 dead transitions. [2023-11-12 02:08:25,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 216 transitions, 1309 flow [2023-11-12 02:08:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:08:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1749 transitions. [2023-11-12 02:08:25,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007157171485829 [2023-11-12 02:08:25,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1749 transitions. [2023-11-12 02:08:25,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1749 transitions. [2023-11-12 02:08:25,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:25,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1749 transitions. [2023-11-12 02:08:25,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:25,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:25,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:25,738 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 511 flow. Second operand 7 states and 1749 transitions. [2023-11-12 02:08:25,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 216 transitions, 1309 flow [2023-11-12 02:08:25,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 216 transitions, 1284 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:25,843 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 628 flow [2023-11-12 02:08:25,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=628, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2023-11-12 02:08:25,845 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places. [2023-11-12 02:08:25,845 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 628 flow [2023-11-12 02:08:25,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 226.57142857142858) internal successors, (1586), 7 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:25,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:25,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:08:25,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:25,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:25,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1793280667, now seen corresponding path program 2 times [2023-11-12 02:08:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:25,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760369713] [2023-11-12 02:08:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:26,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:26,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760369713] [2023-11-12 02:08:26,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760369713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:26,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:26,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:26,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061947700] [2023-11-12 02:08:26,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:26,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:26,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-12 02:08:26,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 628 flow. Second operand has 7 states, 7 states have (on average 227.57142857142858) internal successors, (1593), 7 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:26,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:26,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-12 02:08:26,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:28,166 INFO L124 PetriNetUnfolderBase]: 5331/8981 cut-off events. [2023-11-12 02:08:28,166 INFO L125 PetriNetUnfolderBase]: For 8581/8597 co-relation queries the response was YES. [2023-11-12 02:08:28,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25262 conditions, 8981 events. 5331/8981 cut-off events. For 8581/8597 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 58144 event pairs, 1812 based on Foata normal form. 141/8031 useless extension candidates. Maximal degree in co-relation 15356. Up to 5931 conditions per place. [2023-11-12 02:08:28,221 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 179 selfloop transitions, 35 changer transitions 0/221 dead transitions. [2023-11-12 02:08:28,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 221 transitions, 1435 flow [2023-11-12 02:08:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:08:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1749 transitions. [2023-11-12 02:08:28,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007157171485829 [2023-11-12 02:08:28,229 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1749 transitions. [2023-11-12 02:08:28,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1749 transitions. [2023-11-12 02:08:28,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:28,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1749 transitions. [2023-11-12 02:08:28,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 249.85714285714286) internal successors, (1749), 7 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,245 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,245 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 628 flow. Second operand 7 states and 1749 transitions. [2023-11-12 02:08:28,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 221 transitions, 1435 flow [2023-11-12 02:08:28,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 221 transitions, 1414 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:28,344 INFO L231 Difference]: Finished difference. Result has 100 places, 114 transitions, 787 flow [2023-11-12 02:08:28,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=787, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2023-11-12 02:08:28,347 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-11-12 02:08:28,348 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 787 flow [2023-11-12 02:08:28,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.57142857142858) internal successors, (1593), 7 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:28,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:28,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:08:28,351 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:28,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash -995547143, now seen corresponding path program 1 times [2023-11-12 02:08:28,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:28,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250295122] [2023-11-12 02:08:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:28,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:28,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:28,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250295122] [2023-11-12 02:08:28,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250295122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:28,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:28,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142466453] [2023-11-12 02:08:28,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:28,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:28,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:28,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:28,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 499 [2023-11-12 02:08:28,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 787 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:28,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 499 [2023-11-12 02:08:28,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:28,723 INFO L124 PetriNetUnfolderBase]: 741/1495 cut-off events. [2023-11-12 02:08:28,723 INFO L125 PetriNetUnfolderBase]: For 1483/1483 co-relation queries the response was YES. [2023-11-12 02:08:28,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4000 conditions, 1495 events. 741/1495 cut-off events. For 1483/1483 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8679 event pairs, 471 based on Foata normal form. 74/1422 useless extension candidates. Maximal degree in co-relation 2875. Up to 785 conditions per place. [2023-11-12 02:08:28,735 INFO L140 encePairwiseOnDemand]: 495/499 looper letters, 79 selfloop transitions, 2 changer transitions 6/96 dead transitions. [2023-11-12 02:08:28,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 96 transitions, 732 flow [2023-11-12 02:08:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-11-12 02:08:28,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210420841683366 [2023-11-12 02:08:28,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-11-12 02:08:28,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-11-12 02:08:28,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:28,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-11-12 02:08:28,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,757 INFO L175 Difference]: Start difference. First operand has 100 places, 114 transitions, 787 flow. Second operand 3 states and 780 transitions. [2023-11-12 02:08:28,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 96 transitions, 732 flow [2023-11-12 02:08:28,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 692 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:28,768 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 489 flow [2023-11-12 02:08:28,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2023-11-12 02:08:28,771 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 41 predicate places. [2023-11-12 02:08:28,771 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 489 flow [2023-11-12 02:08:28,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:28,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:28,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:28,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:08:28,781 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:28,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1544542564, now seen corresponding path program 1 times [2023-11-12 02:08:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374753751] [2023-11-12 02:08:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374753751] [2023-11-12 02:08:29,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374753751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:29,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:29,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:29,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938833699] [2023-11-12 02:08:29,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:29,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:08:29,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:29,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:08:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:29,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-12 02:08:29,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 489 flow. Second operand has 7 states, 7 states have (on average 227.57142857142858) internal successors, (1593), 7 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:29,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:29,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-12 02:08:29,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:30,026 INFO L124 PetriNetUnfolderBase]: 745/1492 cut-off events. [2023-11-12 02:08:30,026 INFO L125 PetriNetUnfolderBase]: For 1115/1115 co-relation queries the response was YES. [2023-11-12 02:08:30,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 1492 events. 745/1492 cut-off events. For 1115/1115 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8573 event pairs, 235 based on Foata normal form. 21/1380 useless extension candidates. Maximal degree in co-relation 3678. Up to 815 conditions per place. [2023-11-12 02:08:30,036 INFO L140 encePairwiseOnDemand]: 489/499 looper letters, 103 selfloop transitions, 16 changer transitions 0/125 dead transitions. [2023-11-12 02:08:30,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 125 transitions, 840 flow [2023-11-12 02:08:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:30,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:08:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1683 transitions. [2023-11-12 02:08:30,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48182078442599485 [2023-11-12 02:08:30,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1683 transitions. [2023-11-12 02:08:30,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1683 transitions. [2023-11-12 02:08:30,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:30,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1683 transitions. [2023-11-12 02:08:30,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,058 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 489 flow. Second operand 7 states and 1683 transitions. [2023-11-12 02:08:30,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 125 transitions, 840 flow [2023-11-12 02:08:30,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 125 transitions, 834 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:30,068 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 536 flow [2023-11-12 02:08:30,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=536, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2023-11-12 02:08:30,069 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2023-11-12 02:08:30,070 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 536 flow [2023-11-12 02:08:30,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.57142857142858) internal successors, (1593), 7 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:30,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:30,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:08:30,073 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:30,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 635992630, now seen corresponding path program 1 times [2023-11-12 02:08:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:30,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400057523] [2023-11-12 02:08:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:30,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:30,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:30,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400057523] [2023-11-12 02:08:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400057523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:30,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:30,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:30,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893613525] [2023-11-12 02:08:30,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:30,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:30,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 499 [2023-11-12 02:08:30,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:30,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 499 [2023-11-12 02:08:30,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:30,392 INFO L124 PetriNetUnfolderBase]: 577/1174 cut-off events. [2023-11-12 02:08:30,392 INFO L125 PetriNetUnfolderBase]: For 1159/1159 co-relation queries the response was YES. [2023-11-12 02:08:30,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3237 conditions, 1174 events. 577/1174 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6103 event pairs, 432 based on Foata normal form. 8/1075 useless extension candidates. Maximal degree in co-relation 2838. Up to 843 conditions per place. [2023-11-12 02:08:30,399 INFO L140 encePairwiseOnDemand]: 494/499 looper letters, 82 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-11-12 02:08:30,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 724 flow [2023-11-12 02:08:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-11-12 02:08:30,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257181028724115 [2023-11-12 02:08:30,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-11-12 02:08:30,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-11-12 02:08:30,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:30,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-11-12 02:08:30,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,411 INFO L175 Difference]: Start difference. First operand has 103 places, 86 transitions, 536 flow. Second operand 3 states and 787 transitions. [2023-11-12 02:08:30,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 724 flow [2023-11-12 02:08:30,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 94 transitions, 698 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:30,421 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 514 flow [2023-11-12 02:08:30,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2023-11-12 02:08:30,422 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2023-11-12 02:08:30,422 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 514 flow [2023-11-12 02:08:30,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:30,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:30,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:30,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:08:30,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:08:30,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1757219439, now seen corresponding path program 1 times [2023-11-12 02:08:30,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:30,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666430860] [2023-11-12 02:08:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:30,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:31,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:31,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666430860] [2023-11-12 02:08:31,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666430860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:31,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934082430] [2023-11-12 02:08:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:31,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:31,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:31,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77883f9a-aeb4-4dd9-9870-065fd380c785/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:08:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:31,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-12 02:08:31,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:31,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:31,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 02:08:31,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:31,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-12 02:08:31,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:31,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:32,000 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2023-11-12 02:08:32,210 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 51 [2023-11-12 02:08:32,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 67 [2023-11-12 02:08:32,949 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 168 [2023-11-12 02:08:33,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:33,206 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 490 treesize of output 413 [2023-11-12 02:08:33,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 508 treesize of output 429 [2023-11-12 02:08:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:34,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:34,507 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_256 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43| Int) (v_ArrVal_255 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_255) |c_~#queue~0.base|))) (or (< (select .cse0 (+ |c_~#queue~0.offset| 3204)) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) |c_~#queue~0.offset|) v_ArrVal_256) (+ 3208 |c_~#queue~0.offset|)) 2147483647)))) is different from false [2023-11-12 02:08:34,911 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_256 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~post38#1_63| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_53| Int) (v_ArrVal_255 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse2 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse0 .cse2 (+ |v_t1Thread1of1ForFork0_enqueue_#t~post38#1_63| 1)) .cse1 (+ |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_53| 1))) |c_~#stored_elements~0.base| v_ArrVal_255) |c_~#queue~0.base|))) (or (< (select .cse0 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_53|) (< (select .cse0 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~post38#1_63|) (< (select .cse3 (+ |c_~#queue~0.offset| 3204)) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) (< (select (store .cse3 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43|) |c_~#queue~0.offset|) v_ArrVal_256) (+ 3208 |c_~#queue~0.offset|)) 2147483647))))) is different from false [2023-11-12 02:08:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-12 02:08:35,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934082430] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:35,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:08:35,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-11-12 02:08:35,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939539411] [2023-11-12 02:08:35,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:35,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-12 02:08:35,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:35,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-12 02:08:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=665, Unknown=19, NotChecked=114, Total=992 [2023-11-12 02:08:36,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 499 [2023-11-12 02:08:36,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 514 flow. Second operand has 32 states, 32 states have (on average 189.40625) internal successors, (6061), 32 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:36,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:36,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 499 [2023-11-12 02:08:36,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:42,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-12 02:08:44,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]