./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu --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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:51,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:51,353 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:01:51,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:51,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:51,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:51,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:51,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:51,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:51,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:51,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:51,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:51,398 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:51,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:51,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:51,400 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:51,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:51,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:51,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:51,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:51,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:51,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:51,405 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:01:51,405 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:51,406 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:51,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:51,407 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:51,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:51,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:51,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:51,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:51,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:51,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:51,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:01:51,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:51,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:51,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:51,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:01:51,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:51,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:51,412 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:51,412 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_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2023-11-19 08:01:51,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:51,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:51,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:51,775 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:51,776 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:51,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-19 08:01:55,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:56,003 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:56,004 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-19 08:01:56,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/data/3139deedb/0bd218213a6142ec9eada8cba18a9e98/FLAG28c17dd8b [2023-11-19 08:01:56,065 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/data/3139deedb/0bd218213a6142ec9eada8cba18a9e98 [2023-11-19 08:01:56,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:56,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:56,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:56,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:56,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:56,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:56" (1/1) ... [2023-11-19 08:01:56,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645e203a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:56, skipping insertion in model container [2023-11-19 08:01:56,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:56" (1/1) ... [2023-11-19 08:01:56,160 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:56,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:56,991 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:57,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:57,171 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:57,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57 WrapperNode [2023-11-19 08:01:57,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:57,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:57,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:57,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:57,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,269 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 220 [2023-11-19 08:01:57,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:57,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:57,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:57,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:57,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,287 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:57,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:57,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:57,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:57,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (1/1) ... [2023-11-19 08:01:57,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:57,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:57,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:57,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 08:01:57,416 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 08:01:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 08:01:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 08:01:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:01:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:57,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:57,419 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:01:57,579 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:57,581 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:58,047 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:58,063 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:58,063 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:01:58,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:58 BoogieIcfgContainer [2023-11-19 08:01:58,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:58,080 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:58,080 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:58,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:58,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:56" (1/3) ... [2023-11-19 08:01:58,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c6b519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:58, skipping insertion in model container [2023-11-19 08:01:58,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:57" (2/3) ... [2023-11-19 08:01:58,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c6b519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:58, skipping insertion in model container [2023-11-19 08:01:58,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:58" (3/3) ... [2023-11-19 08:01:58,091 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-11-19 08:01:58,098 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:01:58,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:58,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 08:01:58,107 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:58,254 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:01:58,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 530 flow [2023-11-19 08:01:58,500 INFO L124 PetriNetUnfolderBase]: 15/256 cut-off events. [2023-11-19 08:01:58,500 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:01:58,511 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. [2023-11-19 08:01:58,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 530 flow [2023-11-19 08:01:58,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 246 transitions, 501 flow [2023-11-19 08:01:58,524 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:58,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-19 08:01:58,551 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-19 08:01:58,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 246 transitions, 501 flow [2023-11-19 08:01:58,621 INFO L124 PetriNetUnfolderBase]: 15/246 cut-off events. [2023-11-19 08:01:58,621 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:01:58,624 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. [2023-11-19 08:01:58,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 15300 [2023-11-19 08:02:07,282 INFO L134 LiptonReduction]: Checked pairs total: 32311 [2023-11-19 08:02:07,282 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-11-19 08:02:07,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:07,306 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;@5b47c64b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:07,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-19 08:02:07,312 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:07,312 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-19 08:02:07,313 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:02:07,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:07,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:07,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:07,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash 665727335, now seen corresponding path program 1 times [2023-11-19 08:02:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:07,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586202479] [2023-11-19 08:02:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:08,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586202479] [2023-11-19 08:02:08,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586202479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:08,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:08,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:08,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633650985] [2023-11-19 08:02:08,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:08,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:08,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:08,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:08,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 499 [2023-11-19 08:02:08,640 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) [2023-11-19 08:02:08,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:08,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 499 [2023-11-19 08:02:08,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:09,195 INFO L124 PetriNetUnfolderBase]: 1510/2487 cut-off events. [2023-11-19 08:02:09,195 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-19 08:02:09,200 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. [2023-11-19 08:02:09,216 INFO L140 encePairwiseOnDemand]: 491/499 looper letters, 54 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-11-19 08:02:09,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 275 flow [2023-11-19 08:02:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:02:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1439 transitions. [2023-11-19 08:02:09,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48062792251169006 [2023-11-19 08:02:09,241 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1439 transitions. [2023-11-19 08:02:09,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1439 transitions. [2023-11-19 08:02:09,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:09,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1439 transitions. [2023-11-19 08:02:09,259 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) [2023-11-19 08:02:09,271 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) [2023-11-19 08:02:09,274 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) [2023-11-19 08:02:09,276 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 125 flow. Second operand 6 states and 1439 transitions. [2023-11-19 08:02:09,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 275 flow [2023-11-19 08:02:09,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:02:09,284 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 180 flow [2023-11-19 08:02:09,286 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} [2023-11-19 08:02:09,290 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-11-19 08:02:09,290 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 180 flow [2023-11-19 08:02:09,292 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) [2023-11-19 08:02:09,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:09,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:09,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:09,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:09,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash -837658795, now seen corresponding path program 1 times [2023-11-19 08:02:09,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:09,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230181581] [2023-11-19 08:02:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:09,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:09,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230181581] [2023-11-19 08:02:09,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230181581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:09,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:09,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:09,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925147853] [2023-11-19 08:02:09,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:09,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:09,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:10,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 499 [2023-11-19 08:02:10,366 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) [2023-11-19 08:02:10,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:10,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 499 [2023-11-19 08:02:10,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:11,259 INFO L124 PetriNetUnfolderBase]: 2247/3738 cut-off events. [2023-11-19 08:02:11,259 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2023-11-19 08:02:11,267 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. [2023-11-19 08:02:11,294 INFO L140 encePairwiseOnDemand]: 489/499 looper letters, 131 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2023-11-19 08:02:11,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 159 transitions, 699 flow [2023-11-19 08:02:11,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:02:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1487 transitions. [2023-11-19 08:02:11,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49665998663994654 [2023-11-19 08:02:11,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1487 transitions. [2023-11-19 08:02:11,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1487 transitions. [2023-11-19 08:02:11,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:11,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1487 transitions. [2023-11-19 08:02:11,308 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) [2023-11-19 08:02:11,316 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) [2023-11-19 08:02:11,319 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) [2023-11-19 08:02:11,319 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 180 flow. Second operand 6 states and 1487 transitions. [2023-11-19 08:02:11,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 159 transitions, 699 flow [2023-11-19 08:02:11,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 159 transitions, 699 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:11,336 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 315 flow [2023-11-19 08:02:11,336 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} [2023-11-19 08:02:11,337 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-11-19 08:02:11,337 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 315 flow [2023-11-19 08:02:11,339 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) [2023-11-19 08:02:11,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:11,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:02:11,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:11,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash -836966844, now seen corresponding path program 1 times [2023-11-19 08:02:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919977223] [2023-11-19 08:02:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:11,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:11,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919977223] [2023-11-19 08:02:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919977223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:11,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:11,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067018729] [2023-11-19 08:02:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:11,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:11,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:12,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-19 08:02:12,111 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) [2023-11-19 08:02:12,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:12,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-19 08:02:12,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:13,094 INFO L124 PetriNetUnfolderBase]: 2396/4016 cut-off events. [2023-11-19 08:02:13,095 INFO L125 PetriNetUnfolderBase]: For 1705/1705 co-relation queries the response was YES. [2023-11-19 08:02:13,106 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. [2023-11-19 08:02:13,135 INFO L140 encePairwiseOnDemand]: 491/499 looper letters, 116 selfloop transitions, 19 changer transitions 0/142 dead transitions. [2023-11-19 08:02:13,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 738 flow [2023-11-19 08:02:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:13,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:02:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1248 transitions. [2023-11-19 08:02:13,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002004008016032 [2023-11-19 08:02:13,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1248 transitions. [2023-11-19 08:02:13,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1248 transitions. [2023-11-19 08:02:13,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:13,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1248 transitions. [2023-11-19 08:02:13,149 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) [2023-11-19 08:02:13,155 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) [2023-11-19 08:02:13,158 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) [2023-11-19 08:02:13,158 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 315 flow. Second operand 5 states and 1248 transitions. [2023-11-19 08:02:13,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 738 flow [2023-11-19 08:02:13,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 142 transitions, 724 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:13,197 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 409 flow [2023-11-19 08:02:13,197 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} [2023-11-19 08:02:13,199 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2023-11-19 08:02:13,200 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 409 flow [2023-11-19 08:02:13,201 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) [2023-11-19 08:02:13,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:13,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:13,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:02:13,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:13,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash 548683948, now seen corresponding path program 1 times [2023-11-19 08:02:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:13,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472916701] [2023-11-19 08:02:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:13,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:13,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472916701] [2023-11-19 08:02:13,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472916701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:13,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:13,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:13,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969230185] [2023-11-19 08:02:13,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:13,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:13,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:13,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 499 [2023-11-19 08:02:13,316 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) [2023-11-19 08:02:13,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:13,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 499 [2023-11-19 08:02:13,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:14,503 INFO L124 PetriNetUnfolderBase]: 3939/6447 cut-off events. [2023-11-19 08:02:14,504 INFO L125 PetriNetUnfolderBase]: For 6928/7044 co-relation queries the response was YES. [2023-11-19 08:02:14,520 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. [2023-11-19 08:02:14,572 INFO L140 encePairwiseOnDemand]: 492/499 looper letters, 162 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2023-11-19 08:02:14,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 177 transitions, 1139 flow [2023-11-19 08:02:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:02:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1065 transitions. [2023-11-19 08:02:14,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335671342685371 [2023-11-19 08:02:14,577 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1065 transitions. [2023-11-19 08:02:14,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1065 transitions. [2023-11-19 08:02:14,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:14,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1065 transitions. [2023-11-19 08:02:14,581 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) [2023-11-19 08:02:14,587 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) [2023-11-19 08:02:14,588 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) [2023-11-19 08:02:14,588 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 409 flow. Second operand 4 states and 1065 transitions. [2023-11-19 08:02:14,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 177 transitions, 1139 flow [2023-11-19 08:02:14,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 177 transitions, 1115 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:14,619 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 433 flow [2023-11-19 08:02:14,619 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} [2023-11-19 08:02:14,621 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-11-19 08:02:14,621 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 433 flow [2023-11-19 08:02:14,622 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) [2023-11-19 08:02:14,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:14,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:14,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:02:14,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:14,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1474196742, now seen corresponding path program 1 times [2023-11-19 08:02:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:14,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790921266] [2023-11-19 08:02:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:14,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:14,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790921266] [2023-11-19 08:02:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790921266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:14,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:14,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846434797] [2023-11-19 08:02:14,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:14,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:14,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:15,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 499 [2023-11-19 08:02:15,252 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) [2023-11-19 08:02:15,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:15,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 499 [2023-11-19 08:02:15,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:16,479 INFO L124 PetriNetUnfolderBase]: 4113/6952 cut-off events. [2023-11-19 08:02:16,480 INFO L125 PetriNetUnfolderBase]: For 4209/4221 co-relation queries the response was YES. [2023-11-19 08:02:16,501 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. [2023-11-19 08:02:16,617 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 107 selfloop transitions, 16 changer transitions 0/130 dead transitions. [2023-11-19 08:02:16,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 797 flow [2023-11-19 08:02:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1693 transitions. [2023-11-19 08:02:16,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48468365302032634 [2023-11-19 08:02:16,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1693 transitions. [2023-11-19 08:02:16,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1693 transitions. [2023-11-19 08:02:16,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:16,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1693 transitions. [2023-11-19 08:02:16,634 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) [2023-11-19 08:02:16,641 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) [2023-11-19 08:02:16,643 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) [2023-11-19 08:02:16,643 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 433 flow. Second operand 7 states and 1693 transitions. [2023-11-19 08:02:16,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 797 flow [2023-11-19 08:02:16,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 793 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:16,663 INFO L231 Difference]: Finished difference. Result has 90 places, 97 transitions, 511 flow [2023-11-19 08:02:16,663 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} [2023-11-19 08:02:16,664 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 32 predicate places. [2023-11-19 08:02:16,665 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 97 transitions, 511 flow [2023-11-19 08:02:16,666 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) [2023-11-19 08:02:16,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:16,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:16,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:02:16,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:16,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash -931432907, now seen corresponding path program 1 times [2023-11-19 08:02:16,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:16,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748717725] [2023-11-19 08:02:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:16,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:17,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:17,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748717725] [2023-11-19 08:02:17,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748717725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:17,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:17,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:17,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513548670] [2023-11-19 08:02:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:17,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:02:17,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:02:17,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:17,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-19 08:02:17,466 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) [2023-11-19 08:02:17,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:17,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-19 08:02:17,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:19,124 INFO L124 PetriNetUnfolderBase]: 5018/8384 cut-off events. [2023-11-19 08:02:19,124 INFO L125 PetriNetUnfolderBase]: For 5011/5055 co-relation queries the response was YES. [2023-11-19 08:02:19,153 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. [2023-11-19 08:02:19,188 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 182 selfloop transitions, 27 changer transitions 0/216 dead transitions. [2023-11-19 08:02:19,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 216 transitions, 1309 flow [2023-11-19 08:02:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1749 transitions. [2023-11-19 08:02:19,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007157171485829 [2023-11-19 08:02:19,198 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1749 transitions. [2023-11-19 08:02:19,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1749 transitions. [2023-11-19 08:02:19,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:19,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1749 transitions. [2023-11-19 08:02:19,205 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) [2023-11-19 08:02:19,212 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) [2023-11-19 08:02:19,213 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) [2023-11-19 08:02:19,214 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 511 flow. Second operand 7 states and 1749 transitions. [2023-11-19 08:02:19,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 216 transitions, 1309 flow [2023-11-19 08:02:19,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 216 transitions, 1284 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-19 08:02:19,309 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 628 flow [2023-11-19 08:02:19,309 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} [2023-11-19 08:02:19,314 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places. [2023-11-19 08:02:19,314 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 628 flow [2023-11-19 08:02:19,315 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) [2023-11-19 08:02:19,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:19,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:19,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:02:19,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:19,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1793280667, now seen corresponding path program 2 times [2023-11-19 08:02:19,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:19,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217468670] [2023-11-19 08:02:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:19,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:19,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:19,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217468670] [2023-11-19 08:02:19,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217468670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:19,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:19,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:19,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517598277] [2023-11-19 08:02:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:19,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:02:19,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:02:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:20,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-19 08:02:20,060 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) [2023-11-19 08:02:20,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:20,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-19 08:02:20,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:22,129 INFO L124 PetriNetUnfolderBase]: 6312/10545 cut-off events. [2023-11-19 08:02:22,130 INFO L125 PetriNetUnfolderBase]: For 12089/12105 co-relation queries the response was YES. [2023-11-19 08:02:22,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29873 conditions, 10545 events. 6312/10545 cut-off events. For 12089/12105 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 68869 event pairs, 2234 based on Foata normal form. 199/9499 useless extension candidates. Maximal degree in co-relation 19722. Up to 5369 conditions per place. [2023-11-19 08:02:22,213 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 184 selfloop transitions, 37 changer transitions 0/228 dead transitions. [2023-11-19 08:02:22,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 228 transitions, 1493 flow [2023-11-19 08:02:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1756 transitions. [2023-11-19 08:02:22,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027197251646149 [2023-11-19 08:02:22,221 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1756 transitions. [2023-11-19 08:02:22,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1756 transitions. [2023-11-19 08:02:22,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:22,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1756 transitions. [2023-11-19 08:02:22,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 250.85714285714286) internal successors, (1756), 7 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:22,237 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) [2023-11-19 08:02:22,239 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) [2023-11-19 08:02:22,239 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 628 flow. Second operand 7 states and 1756 transitions. [2023-11-19 08:02:22,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 228 transitions, 1493 flow [2023-11-19 08:02:22,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 228 transitions, 1472 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 08:02:22,371 INFO L231 Difference]: Finished difference. Result has 100 places, 114 transitions, 800 flow [2023-11-19 08:02:22,372 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=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2023-11-19 08:02:22,373 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-11-19 08:02:22,374 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 800 flow [2023-11-19 08:02:22,375 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) [2023-11-19 08:02:22,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:22,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:02:22,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:22,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -995547143, now seen corresponding path program 1 times [2023-11-19 08:02:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5642264] [2023-11-19 08:02:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:22,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5642264] [2023-11-19 08:02:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5642264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:22,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:22,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:22,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351785021] [2023-11-19 08:02:22,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:22,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:22,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:22,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:22,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:22,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 499 [2023-11-19 08:02:22,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 800 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) [2023-11-19 08:02:22,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:22,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 499 [2023-11-19 08:02:22,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:22,722 INFO L124 PetriNetUnfolderBase]: 740/1485 cut-off events. [2023-11-19 08:02:22,722 INFO L125 PetriNetUnfolderBase]: For 1448/1448 co-relation queries the response was YES. [2023-11-19 08:02:22,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3977 conditions, 1485 events. 740/1485 cut-off events. For 1448/1448 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8564 event pairs, 469 based on Foata normal form. 72/1411 useless extension candidates. Maximal degree in co-relation 2852. Up to 785 conditions per place. [2023-11-19 08:02:22,733 INFO L140 encePairwiseOnDemand]: 495/499 looper letters, 77 selfloop transitions, 2 changer transitions 6/94 dead transitions. [2023-11-19 08:02:22,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 706 flow [2023-11-19 08:02:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-11-19 08:02:22,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210420841683366 [2023-11-19 08:02:22,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-11-19 08:02:22,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-11-19 08:02:22,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:22,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-11-19 08:02:22,740 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) [2023-11-19 08:02:22,745 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) [2023-11-19 08:02:22,755 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) [2023-11-19 08:02:22,763 INFO L175 Difference]: Start difference. First operand has 100 places, 114 transitions, 800 flow. Second operand 3 states and 780 transitions. [2023-11-19 08:02:22,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 706 flow [2023-11-19 08:02:22,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 646 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-19 08:02:22,774 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 449 flow [2023-11-19 08:02:22,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2023-11-19 08:02:22,778 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2023-11-19 08:02:22,778 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 449 flow [2023-11-19 08:02:22,779 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) [2023-11-19 08:02:22,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:22,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:22,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:02:22,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:22,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:22,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1544542564, now seen corresponding path program 1 times [2023-11-19 08:02:22,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:22,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885531555] [2023-11-19 08:02:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:22,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:23,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885531555] [2023-11-19 08:02:23,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885531555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:23,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:23,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:23,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657535617] [2023-11-19 08:02:23,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:23,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:23,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:23,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-19 08:02:23,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:23,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:23,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-19 08:02:23,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:23,910 INFO L124 PetriNetUnfolderBase]: 744/1482 cut-off events. [2023-11-19 08:02:23,911 INFO L125 PetriNetUnfolderBase]: For 748/748 co-relation queries the response was YES. [2023-11-19 08:02:23,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3822 conditions, 1482 events. 744/1482 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8467 event pairs, 233 based on Foata normal form. 21/1371 useless extension candidates. Maximal degree in co-relation 3598. Up to 823 conditions per place. [2023-11-19 08:02:23,921 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 99 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2023-11-19 08:02:23,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 776 flow [2023-11-19 08:02:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:02:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1446 transitions. [2023-11-19 08:02:23,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48296593186372744 [2023-11-19 08:02:23,928 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1446 transitions. [2023-11-19 08:02:23,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1446 transitions. [2023-11-19 08:02:23,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:23,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1446 transitions. [2023-11-19 08:02:23,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:23,941 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) [2023-11-19 08:02:23,942 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) [2023-11-19 08:02:23,942 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 449 flow. Second operand 6 states and 1446 transitions. [2023-11-19 08:02:23,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 776 flow [2023-11-19 08:02:23,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 770 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:23,951 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 492 flow [2023-11-19 08:02:23,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2023-11-19 08:02:23,954 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 41 predicate places. [2023-11-19 08:02:23,954 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 492 flow [2023-11-19 08:02:23,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:23,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:23,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:23,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:02:23,957 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:23,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash 635992631, now seen corresponding path program 1 times [2023-11-19 08:02:23,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:23,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143342851] [2023-11-19 08:02:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:23,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:24,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:24,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143342851] [2023-11-19 08:02:24,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143342851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:24,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:24,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:24,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125228020] [2023-11-19 08:02:24,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:24,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:24,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:24,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:24,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 499 [2023-11-19 08:02:24,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 492 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) [2023-11-19 08:02:24,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:24,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 499 [2023-11-19 08:02:24,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:24,271 INFO L124 PetriNetUnfolderBase]: 576/1164 cut-off events. [2023-11-19 08:02:24,271 INFO L125 PetriNetUnfolderBase]: For 848/848 co-relation queries the response was YES. [2023-11-19 08:02:24,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 1164 events. 576/1164 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5997 event pairs, 430 based on Foata normal form. 8/1066 useless extension candidates. Maximal degree in co-relation 2761. Up to 835 conditions per place. [2023-11-19 08:02:24,280 INFO L140 encePairwiseOnDemand]: 494/499 looper letters, 80 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-11-19 08:02:24,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 674 flow [2023-11-19 08:02:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-11-19 08:02:24,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257181028724115 [2023-11-19 08:02:24,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-11-19 08:02:24,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-11-19 08:02:24,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:24,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-11-19 08:02:24,288 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) [2023-11-19 08:02:24,291 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) [2023-11-19 08:02:24,291 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) [2023-11-19 08:02:24,292 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 492 flow. Second operand 3 states and 787 transitions. [2023-11-19 08:02:24,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 674 flow [2023-11-19 08:02:24,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 633 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-19 08:02:24,300 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 455 flow [2023-11-19 08:02:24,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=455, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2023-11-19 08:02:24,301 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 39 predicate places. [2023-11-19 08:02:24,302 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 455 flow [2023-11-19 08:02:24,302 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) [2023-11-19 08:02:24,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:24,302 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:24,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:02:24,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-19 08:02:24,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1757219439, now seen corresponding path program 1 times [2023-11-19 08:02:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:24,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115123118] [2023-11-19 08:02:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:24,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:25,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:25,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115123118] [2023-11-19 08:02:25,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115123118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:25,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985601638] [2023-11-19 08:02:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:25,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:25,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:25,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:25,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc65786d-b28f-48a1-9c1d-18bc124a7d5c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:25,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-19 08:02:25,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:25,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:02:25,523 INFO L378 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 27 treesize of output 21 [2023-11-19 08:02:25,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:02:25,539 INFO L378 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 [2023-11-19 08:02:25,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:02:25,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:02:25,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:02:25,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 1 [2023-11-19 08:02:25,766 INFO L378 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 69 treesize of output 58 [2023-11-19 08:02:26,023 INFO L378 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 117 treesize of output 102 [2023-11-19 08:02:26,449 INFO L378 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 163 treesize of output 146 [2023-11-19 08:02:26,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:02:26,621 INFO L378 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 252 treesize of output 227 [2023-11-19 08:02:26,914 INFO L378 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 276 treesize of output 249 [2023-11-19 08:02:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:27,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:27,747 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_256 Int) (v_ArrVal_254 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43| Int) (v_ArrVal_255 (Array Int Int))) (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse2 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse1 .cse2 v_ArrVal_254)) |c_~#stored_elements~0.base| v_ArrVal_255) |c_~#queue~0.base|))) (or (< (select .cse0 (+ |c_~#queue~0.offset| 1604)) |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) (+ 1608 |c_~#queue~0.offset|)) 2147483647) (< (+ (select .cse1 .cse2) 1) v_ArrVal_254))))) is different from false [2023-11-19 08:02:28,693 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_256 Int) (v_ArrVal_254 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_43| Int) (v_ArrVal_252 Int) (v_ArrVal_255 (Array Int Int)) (v_ArrVal_249 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_249)) (.cse1 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|)) (.cse2 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse0 .cse1 v_ArrVal_252) .cse2 v_ArrVal_254)) |c_~#stored_elements~0.base| v_ArrVal_255) |c_~#queue~0.base|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_252) (< (+ (select .cse0 .cse2) 1) v_ArrVal_254) (< (select .cse3 (+ |c_~#queue~0.offset| 1604)) |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) (+ 1608 |c_~#queue~0.offset|)) 2147483647))))) is different from false [2023-11-19 08:02:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 08:02:35,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985601638] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:35,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:35,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-11-19 08:02:35,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538497111] [2023-11-19 08:02:35,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:35,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 08:02:35,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 08:02:35,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=697, Unknown=21, NotChecked=114, Total=992 [2023-11-19 08:02:36,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 499 [2023-11-19 08:02:36,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 455 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) [2023-11-19 08:02:36,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:36,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 499 [2023-11-19 08:02:36,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand