./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/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_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/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_28a76fde-c783-48bc-af8c-d20264b8f2a6/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 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:31,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:31,351 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:36:31,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:31,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:31,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:31,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:31,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:31,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:31,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:31,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:31,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:31,420 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:31,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:31,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:31,423 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:31,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:31,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:31,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:31,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:31,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:31,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:31,426 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:36:31,426 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:31,427 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:31,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:31,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:31,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:31,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:31,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:31,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:31,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:31,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:31,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:31,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:31,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:31,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:31,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:31,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:31,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:31,433 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:31,434 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_28a76fde-c783-48bc-af8c-d20264b8f2a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2023-11-19 07:36:31,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:31,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:31,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:31,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:31,763 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:31,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-19 07:36:34,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:35,104 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:35,104 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-19 07:36:35,113 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/data/be83a1622/68d2a23f2699406cbd4eb28b90ccee61/FLAGf19fc6717 [2023-11-19 07:36:35,126 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/data/be83a1622/68d2a23f2699406cbd4eb28b90ccee61 [2023-11-19 07:36:35,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:35,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:35,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:35,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:35,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:35,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6271a734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35, skipping insertion in model container [2023-11-19 07:36:35,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:35,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:35,393 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:35,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:35,435 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:35,436 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:35,444 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:35,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35 WrapperNode [2023-11-19 07:36:35,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:35,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:35,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:35,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:35,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,520 INFO L138 Inliner]: procedures = 22, calls = 111, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 281 [2023-11-19 07:36:35,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:35,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:35,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:35,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:35,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:35,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:35,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:35,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:35,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (1/1) ... [2023-11-19 07:36:35,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:35,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:35,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:35,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a76fde-c783-48bc-af8c-d20264b8f2a6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:36:35,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:36:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:36:35,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:36:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:36:35,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:36:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:36:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:36:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:35,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:36:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:35,695 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 07:36:35,805 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:35,807 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:36,253 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:36,470 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:36,473 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:36:36,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:36 BoogieIcfgContainer [2023-11-19 07:36:36,482 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:36,485 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:36,486 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:36,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:36,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:35" (1/3) ... [2023-11-19 07:36:36,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415a2d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:36, skipping insertion in model container [2023-11-19 07:36:36,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:35" (2/3) ... [2023-11-19 07:36:36,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415a2d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:36, skipping insertion in model container [2023-11-19 07:36:36,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:36" (3/3) ... [2023-11-19 07:36:36,495 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-19 07:36:36,505 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:36:36,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:36,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:36:36,516 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:36,617 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:36:36,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 175 transitions, 371 flow [2023-11-19 07:36:36,774 INFO L124 PetriNetUnfolderBase]: 2/172 cut-off events. [2023-11-19 07:36:36,775 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:36:36,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 2/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 168 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-11-19 07:36:36,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 175 transitions, 371 flow [2023-11-19 07:36:36,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 148 transitions, 311 flow [2023-11-19 07:36:36,790 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:36,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 148 transitions, 311 flow [2023-11-19 07:36:36,810 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 148 transitions, 311 flow [2023-11-19 07:36:36,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 148 transitions, 311 flow [2023-11-19 07:36:36,875 INFO L124 PetriNetUnfolderBase]: 1/148 cut-off events. [2023-11-19 07:36:36,876 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:36:36,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 148 events. 1/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-11-19 07:36:36,882 INFO L119 LiptonReduction]: Number of co-enabled transitions 3534 [2023-11-19 07:36:41,686 INFO L134 LiptonReduction]: Checked pairs total: 34247 [2023-11-19 07:36:41,686 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-11-19 07:36:41,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:41,710 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;@7b3150d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:41,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-19 07:36:41,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:41,715 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-19 07:36:41,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:41,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:41,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:36:41,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:36:41,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:41,722 INFO L85 PathProgramCache]: Analyzing trace with hash 786892804, now seen corresponding path program 1 times [2023-11-19 07:36:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:41,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724947248] [2023-11-19 07:36:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:41,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:42,245 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 07:36:42,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:42,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724947248] [2023-11-19 07:36:42,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724947248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:42,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:42,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33627944] [2023-11-19 07:36:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:42,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:42,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:42,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:42,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 280 [2023-11-19 07:36:42,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 07:36:42,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:42,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 280 [2023-11-19 07:36:42,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:44,776 INFO L124 PetriNetUnfolderBase]: 12726/19422 cut-off events. [2023-11-19 07:36:44,776 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2023-11-19 07:36:44,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38486 conditions, 19422 events. 12726/19422 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 128834 event pairs, 6252 based on Foata normal form. 111/16792 useless extension candidates. Maximal degree in co-relation 36095. Up to 17871 conditions per place. [2023-11-19 07:36:44,965 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 70 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2023-11-19 07:36:44,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 364 flow [2023-11-19 07:36:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 605 transitions. [2023-11-19 07:36:44,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5401785714285714 [2023-11-19 07:36:44,996 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 605 transitions. [2023-11-19 07:36:44,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 605 transitions. [2023-11-19 07:36:45,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:45,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 605 transitions. [2023-11-19 07:36:45,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states 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 07:36:45,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 07:36:45,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 07:36:45,025 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 133 flow. Second operand 4 states and 605 transitions. [2023-11-19 07:36:45,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 364 flow [2023-11-19 07:36:45,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 351 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:36:45,057 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 206 flow [2023-11-19 07:36:45,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-11-19 07:36:45,064 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2023-11-19 07:36:45,064 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 206 flow [2023-11-19 07:36:45,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 07:36:45,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:45,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:45,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:45,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:36:45,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash -499586878, now seen corresponding path program 1 times [2023-11-19 07:36:45,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:45,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083180947] [2023-11-19 07:36:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:45,475 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 07:36:45,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:45,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083180947] [2023-11-19 07:36:45,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083180947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:45,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:45,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:45,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661504158] [2023-11-19 07:36:45,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:45,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:45,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:45,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 280 [2023-11-19 07:36:45,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 07:36:45,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:45,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 280 [2023-11-19 07:36:45,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:47,956 INFO L124 PetriNetUnfolderBase]: 13835/21291 cut-off events. [2023-11-19 07:36:47,957 INFO L125 PetriNetUnfolderBase]: For 4067/4463 co-relation queries the response was YES. [2023-11-19 07:36:48,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47967 conditions, 21291 events. 13835/21291 cut-off events. For 4067/4463 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 141272 event pairs, 4823 based on Foata normal form. 268/18974 useless extension candidates. Maximal degree in co-relation 39348. Up to 19343 conditions per place. [2023-11-19 07:36:48,269 INFO L140 encePairwiseOnDemand]: 269/280 looper letters, 78 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2023-11-19 07:36:48,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 101 transitions, 470 flow [2023-11-19 07:36:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 605 transitions. [2023-11-19 07:36:48,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5401785714285714 [2023-11-19 07:36:48,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 605 transitions. [2023-11-19 07:36:48,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 605 transitions. [2023-11-19 07:36:48,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:48,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 605 transitions. [2023-11-19 07:36:48,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states 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 07:36:48,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 07:36:48,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states 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 07:36:48,282 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 206 flow. Second operand 4 states and 605 transitions. [2023-11-19 07:36:48,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 101 transitions, 470 flow [2023-11-19 07:36:48,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:48,293 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 303 flow [2023-11-19 07:36:48,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-11-19 07:36:48,301 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 5 predicate places. [2023-11-19 07:36:48,301 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 303 flow [2023-11-19 07:36:48,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 07:36:48,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:48,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:48,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:48,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:36:48,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1605508112, now seen corresponding path program 2 times [2023-11-19 07:36:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:48,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892802680] [2023-11-19 07:36:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:48,614 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 07:36:48,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:48,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892802680] [2023-11-19 07:36:48,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892802680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:48,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:48,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319548764] [2023-11-19 07:36:48,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:48,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:48,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:48,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 280 [2023-11-19 07:36:48,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 303 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 07:36:48,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:48,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 280 [2023-11-19 07:36:48,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:51,204 INFO L124 PetriNetUnfolderBase]: 16163/24715 cut-off events. [2023-11-19 07:36:51,204 INFO L125 PetriNetUnfolderBase]: For 11315/11513 co-relation queries the response was YES. [2023-11-19 07:36:51,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61581 conditions, 24715 events. 16163/24715 cut-off events. For 11315/11513 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 167501 event pairs, 1851 based on Foata normal form. 418/22534 useless extension candidates. Maximal degree in co-relation 51182. Up to 19289 conditions per place. [2023-11-19 07:36:51,532 INFO L140 encePairwiseOnDemand]: 266/280 looper letters, 106 selfloop transitions, 19 changer transitions 0/135 dead transitions. [2023-11-19 07:36:51,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 718 flow [2023-11-19 07:36:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 748 transitions. [2023-11-19 07:36:51,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342857142857143 [2023-11-19 07:36:51,537 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 748 transitions. [2023-11-19 07:36:51,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 748 transitions. [2023-11-19 07:36:51,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:51,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 748 transitions. [2023-11-19 07:36:51,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 07:36:51,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:36:51,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:36:51,548 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 303 flow. Second operand 5 states and 748 transitions. [2023-11-19 07:36:51,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 718 flow [2023-11-19 07:36:51,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 135 transitions, 714 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:51,569 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 410 flow [2023-11-19 07:36:51,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-11-19 07:36:51,571 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2023-11-19 07:36:51,572 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 410 flow [2023-11-19 07:36:51,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 07:36:51,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:51,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:51,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:51,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:36:51,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1623638678, now seen corresponding path program 1 times [2023-11-19 07:36:51,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:51,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953044125] [2023-11-19 07:36:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,870 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 07:36:51,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:51,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953044125] [2023-11-19 07:36:51,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953044125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:51,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:51,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:51,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015332315] [2023-11-19 07:36:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:51,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:51,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:51,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:51,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:51,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 280 [2023-11-19 07:36:51,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 07:36:51,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:51,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 280 [2023-11-19 07:36:51,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:54,248 INFO L124 PetriNetUnfolderBase]: 18374/27813 cut-off events. [2023-11-19 07:36:54,249 INFO L125 PetriNetUnfolderBase]: For 23920/24478 co-relation queries the response was YES. [2023-11-19 07:36:54,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77212 conditions, 27813 events. 18374/27813 cut-off events. For 23920/24478 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 190012 event pairs, 3300 based on Foata normal form. 384/25677 useless extension candidates. Maximal degree in co-relation 55003. Up to 20852 conditions per place. [2023-11-19 07:36:54,479 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 108 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2023-11-19 07:36:54,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 143 transitions, 890 flow [2023-11-19 07:36:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 745 transitions. [2023-11-19 07:36:54,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2023-11-19 07:36:54,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 745 transitions. [2023-11-19 07:36:54,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 745 transitions. [2023-11-19 07:36:54,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:54,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 745 transitions. [2023-11-19 07:36:54,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 07:36:54,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:36:54,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:36:54,494 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 410 flow. Second operand 5 states and 745 transitions. [2023-11-19 07:36:54,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 143 transitions, 890 flow [2023-11-19 07:36:54,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 143 transitions, 841 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:54,520 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 534 flow [2023-11-19 07:36:54,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=534, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2023-11-19 07:36:54,523 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 12 predicate places. [2023-11-19 07:36:54,523 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 534 flow [2023-11-19 07:36:54,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 07:36:54,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:54,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:54,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:54,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:36:54,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:54,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1532747227, now seen corresponding path program 1 times [2023-11-19 07:36:54,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:54,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442281597] [2023-11-19 07:36:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:54,603 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 07:36:54,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:54,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442281597] [2023-11-19 07:36:54,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442281597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:54,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:54,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548900919] [2023-11-19 07:36:54,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:54,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:54,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:54,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 280 [2023-11-19 07:36:54,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 07:36:54,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:54,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 280 [2023-11-19 07:36:54,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:56,309 INFO L124 PetriNetUnfolderBase]: 12039/18528 cut-off events. [2023-11-19 07:36:56,309 INFO L125 PetriNetUnfolderBase]: For 35339/39445 co-relation queries the response was YES. [2023-11-19 07:36:56,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56908 conditions, 18528 events. 12039/18528 cut-off events. For 35339/39445 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 123301 event pairs, 4899 based on Foata normal form. 1847/18849 useless extension candidates. Maximal degree in co-relation 28540. Up to 10042 conditions per place. [2023-11-19 07:36:56,453 INFO L140 encePairwiseOnDemand]: 270/280 looper letters, 110 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2023-11-19 07:36:56,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 137 transitions, 994 flow [2023-11-19 07:36:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-11-19 07:36:56,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797619047619048 [2023-11-19 07:36:56,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-11-19 07:36:56,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-11-19 07:36:56,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:56,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-11-19 07:36:56,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 07:36:56,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 07:36:56,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 07:36:56,463 INFO L175 Difference]: Start difference. First operand has 81 places, 94 transitions, 534 flow. Second operand 3 states and 487 transitions. [2023-11-19 07:36:56,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 137 transitions, 994 flow [2023-11-19 07:36:56,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 137 transitions, 932 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:56,482 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 526 flow [2023-11-19 07:36:56,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2023-11-19 07:36:56,485 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 12 predicate places. [2023-11-19 07:36:56,486 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 526 flow [2023-11-19 07:36:56,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 07:36:56,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:56,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:56,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:56,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:36:56,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:56,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1755983373, now seen corresponding path program 1 times [2023-11-19 07:36:56,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:56,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177916480] [2023-11-19 07:36:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:56,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:56,724 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 07:36:56,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:56,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177916480] [2023-11-19 07:36:56,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177916480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:56,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:56,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:56,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376528523] [2023-11-19 07:36:56,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:56,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:56,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:56,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:56,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:56,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 280 [2023-11-19 07:36:56,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 526 flow. Second operand has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:56,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:56,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 280 [2023-11-19 07:36:56,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:58,744 INFO L124 PetriNetUnfolderBase]: 14480/22287 cut-off events. [2023-11-19 07:36:58,745 INFO L125 PetriNetUnfolderBase]: For 30312/31812 co-relation queries the response was YES. [2023-11-19 07:36:58,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67821 conditions, 22287 events. 14480/22287 cut-off events. For 30312/31812 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 148457 event pairs, 3673 based on Foata normal form. 730/21908 useless extension candidates. Maximal degree in co-relation 58173. Up to 17994 conditions per place. [2023-11-19 07:36:58,871 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 119 selfloop transitions, 18 changer transitions 0/152 dead transitions. [2023-11-19 07:36:58,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 152 transitions, 996 flow [2023-11-19 07:36:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 744 transitions. [2023-11-19 07:36:58,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2023-11-19 07:36:58,875 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 744 transitions. [2023-11-19 07:36:58,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 744 transitions. [2023-11-19 07:36:58,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:58,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 744 transitions. [2023-11-19 07:36:58,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 07:36:58,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:36:58,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:36:58,883 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 526 flow. Second operand 5 states and 744 transitions. [2023-11-19 07:36:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 152 transitions, 996 flow [2023-11-19 07:36:58,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 152 transitions, 989 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:58,904 INFO L231 Difference]: Finished difference. Result has 85 places, 102 transitions, 610 flow [2023-11-19 07:36:58,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=610, PETRI_PLACES=85, PETRI_TRANSITIONS=102} [2023-11-19 07:36:58,905 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 16 predicate places. [2023-11-19 07:36:58,905 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 610 flow [2023-11-19 07:36:58,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:58,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:58,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:58,906 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:36:58,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1072848013, now seen corresponding path program 1 times [2023-11-19 07:36:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:58,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081073076] [2023-11-19 07:36:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:59,081 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 07:36:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081073076] [2023-11-19 07:36:59,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081073076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:59,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:59,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660554194] [2023-11-19 07:36:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:59,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:59,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:59,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:59,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:59,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 280 [2023-11-19 07:36:59,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 610 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 07:36:59,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:59,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 280 [2023-11-19 07:36:59,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:01,450 INFO L124 PetriNetUnfolderBase]: 16608/25585 cut-off events. [2023-11-19 07:37:01,450 INFO L125 PetriNetUnfolderBase]: For 48253/49913 co-relation queries the response was YES. [2023-11-19 07:37:01,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79644 conditions, 25585 events. 16608/25585 cut-off events. For 48253/49913 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 172105 event pairs, 6725 based on Foata normal form. 1184/25876 useless extension candidates. Maximal degree in co-relation 44636. Up to 21526 conditions per place. [2023-11-19 07:37:01,604 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 131 selfloop transitions, 20 changer transitions 0/165 dead transitions. [2023-11-19 07:37:01,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 165 transitions, 1151 flow [2023-11-19 07:37:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:01,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 743 transitions. [2023-11-19 07:37:01,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307142857142857 [2023-11-19 07:37:01,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 743 transitions. [2023-11-19 07:37:01,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 743 transitions. [2023-11-19 07:37:01,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:01,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 743 transitions. [2023-11-19 07:37:01,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 07:37:01,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:37:01,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:37:01,617 INFO L175 Difference]: Start difference. First operand has 85 places, 102 transitions, 610 flow. Second operand 5 states and 743 transitions. [2023-11-19 07:37:01,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 165 transitions, 1151 flow [2023-11-19 07:37:01,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 165 transitions, 1117 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:37:01,641 INFO L231 Difference]: Finished difference. Result has 89 places, 118 transitions, 786 flow [2023-11-19 07:37:01,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=89, PETRI_TRANSITIONS=118} [2023-11-19 07:37:01,642 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 20 predicate places. [2023-11-19 07:37:01,642 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 118 transitions, 786 flow [2023-11-19 07:37:01,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 07:37:01,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:01,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:01,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:37:01,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:37:01,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:01,644 INFO L85 PathProgramCache]: Analyzing trace with hash -187801048, now seen corresponding path program 1 times [2023-11-19 07:37:01,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:01,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514418896] [2023-11-19 07:37:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:01,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:01,854 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 07:37:01,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:01,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514418896] [2023-11-19 07:37:01,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514418896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:01,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:01,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873646886] [2023-11-19 07:37:01,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:01,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:01,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:01,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:01,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 280 [2023-11-19 07:37:01,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 118 transitions, 786 flow. Second operand has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:01,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:01,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 280 [2023-11-19 07:37:01,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:04,393 INFO L124 PetriNetUnfolderBase]: 16754/25865 cut-off events. [2023-11-19 07:37:04,393 INFO L125 PetriNetUnfolderBase]: For 70160/72672 co-relation queries the response was YES. [2023-11-19 07:37:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86508 conditions, 25865 events. 16754/25865 cut-off events. For 70160/72672 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 176832 event pairs, 4294 based on Foata normal form. 1050/26012 useless extension candidates. Maximal degree in co-relation 75012. Up to 20421 conditions per place. [2023-11-19 07:37:04,538 INFO L140 encePairwiseOnDemand]: 269/280 looper letters, 131 selfloop transitions, 25 changer transitions 0/172 dead transitions. [2023-11-19 07:37:04,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1315 flow [2023-11-19 07:37:04,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2023-11-19 07:37:04,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2023-11-19 07:37:04,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2023-11-19 07:37:04,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2023-11-19 07:37:04,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:04,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2023-11-19 07:37:04,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 07:37:04,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:37:04,549 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 07:37:04,549 INFO L175 Difference]: Start difference. First operand has 89 places, 118 transitions, 786 flow. Second operand 5 states and 740 transitions. [2023-11-19 07:37:04,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1315 flow [2023-11-19 07:37:04,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 172 transitions, 1281 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:04,598 INFO L231 Difference]: Finished difference. Result has 94 places, 123 transitions, 881 flow [2023-11-19 07:37:04,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=881, PETRI_PLACES=94, PETRI_TRANSITIONS=123} [2023-11-19 07:37:04,599 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 25 predicate places. [2023-11-19 07:37:04,599 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 123 transitions, 881 flow [2023-11-19 07:37:04,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:04,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:04,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:04,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:37:04,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:37:04,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:04,601 INFO L85 PathProgramCache]: Analyzing trace with hash 109567885, now seen corresponding path program 1 times [2023-11-19 07:37:04,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:04,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146641047] [2023-11-19 07:37:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:04,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:04,854 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 07:37:04,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:04,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146641047] [2023-11-19 07:37:04,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146641047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:04,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:04,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:04,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178901388] [2023-11-19 07:37:04,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:04,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:04,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:04,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:04,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 280 [2023-11-19 07:37:04,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 123 transitions, 881 flow. Second operand has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 07:37:04,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:04,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 280 [2023-11-19 07:37:04,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:08,618 INFO L124 PetriNetUnfolderBase]: 23005/35769 cut-off events. [2023-11-19 07:37:08,618 INFO L125 PetriNetUnfolderBase]: For 104956/107678 co-relation queries the response was YES. [2023-11-19 07:37:08,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118360 conditions, 35769 events. 23005/35769 cut-off events. For 104956/107678 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 257972 event pairs, 4663 based on Foata normal form. 1264/35841 useless extension candidates. Maximal degree in co-relation 94796. Up to 21220 conditions per place. [2023-11-19 07:37:08,841 INFO L140 encePairwiseOnDemand]: 265/280 looper letters, 181 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2023-11-19 07:37:08,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 245 transitions, 1917 flow [2023-11-19 07:37:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:37:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 904 transitions. [2023-11-19 07:37:08,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2023-11-19 07:37:08,847 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 904 transitions. [2023-11-19 07:37:08,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 904 transitions. [2023-11-19 07:37:08,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:08,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 904 transitions. [2023-11-19 07:37:08,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 07:37:08,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:37:08,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:37:08,857 INFO L175 Difference]: Start difference. First operand has 94 places, 123 transitions, 881 flow. Second operand 6 states and 904 transitions. [2023-11-19 07:37:08,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 245 transitions, 1917 flow [2023-11-19 07:37:09,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 245 transitions, 1876 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:37:09,327 INFO L231 Difference]: Finished difference. Result has 101 places, 149 transitions, 1314 flow [2023-11-19 07:37:09,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1314, PETRI_PLACES=101, PETRI_TRANSITIONS=149} [2023-11-19 07:37:09,328 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 32 predicate places. [2023-11-19 07:37:09,328 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 149 transitions, 1314 flow [2023-11-19 07:37:09,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 07:37:09,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:09,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:37:09,330 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:37:09,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash 119927230, now seen corresponding path program 1 times [2023-11-19 07:37:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:09,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761294581] [2023-11-19 07:37:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:09,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:09,704 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 07:37:09,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:09,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761294581] [2023-11-19 07:37:09,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761294581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:09,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:09,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:37:09,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452524208] [2023-11-19 07:37:09,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:09,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:37:09,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:09,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:37:09,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:37:09,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 280 [2023-11-19 07:37:09,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 149 transitions, 1314 flow. Second operand has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 07:37:09,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:09,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 280 [2023-11-19 07:37:09,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:14,621 INFO L124 PetriNetUnfolderBase]: 24986/38519 cut-off events. [2023-11-19 07:37:14,621 INFO L125 PetriNetUnfolderBase]: For 163075/164763 co-relation queries the response was YES. [2023-11-19 07:37:14,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141114 conditions, 38519 events. 24986/38519 cut-off events. For 163075/164763 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 278398 event pairs, 7208 based on Foata normal form. 632/38114 useless extension candidates. Maximal degree in co-relation 125866. Up to 27362 conditions per place. [2023-11-19 07:37:15,015 INFO L140 encePairwiseOnDemand]: 264/280 looper letters, 206 selfloop transitions, 50 changer transitions 0/266 dead transitions. [2023-11-19 07:37:15,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 266 transitions, 2437 flow [2023-11-19 07:37:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:37:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:37:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1033 transitions. [2023-11-19 07:37:15,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270408163265307 [2023-11-19 07:37:15,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1033 transitions. [2023-11-19 07:37:15,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1033 transitions. [2023-11-19 07:37:15,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:15,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1033 transitions. [2023-11-19 07:37:15,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states 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 07:37:15,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 280.0) internal successors, (2240), 8 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 07:37:15,032 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 280.0) internal successors, (2240), 8 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 07:37:15,032 INFO L175 Difference]: Start difference. First operand has 101 places, 149 transitions, 1314 flow. Second operand 7 states and 1033 transitions. [2023-11-19 07:37:15,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 266 transitions, 2437 flow [2023-11-19 07:37:15,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 266 transitions, 2421 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:15,307 INFO L231 Difference]: Finished difference. Result has 111 places, 166 transitions, 1714 flow [2023-11-19 07:37:15,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1714, PETRI_PLACES=111, PETRI_TRANSITIONS=166} [2023-11-19 07:37:15,308 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 42 predicate places. [2023-11-19 07:37:15,309 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 166 transitions, 1714 flow [2023-11-19 07:37:15,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 07:37:15,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:15,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:15,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:37:15,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:37:15,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1997963851, now seen corresponding path program 1 times [2023-11-19 07:37:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:15,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119271798] [2023-11-19 07:37:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:15,519 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 07:37:15,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119271798] [2023-11-19 07:37:15,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119271798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:15,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:15,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:15,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476739577] [2023-11-19 07:37:15,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:15,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:15,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:15,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:15,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 280 [2023-11-19 07:37:15,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 166 transitions, 1714 flow. Second operand has 6 states, 6 states have (on average 126.16666666666667) internal successors, (757), 6 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 07:37:15,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:15,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 280 [2023-11-19 07:37:15,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:21,124 INFO L124 PetriNetUnfolderBase]: 26102/40775 cut-off events. [2023-11-19 07:37:21,124 INFO L125 PetriNetUnfolderBase]: For 271371/276557 co-relation queries the response was YES. [2023-11-19 07:37:21,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158795 conditions, 40775 events. 26102/40775 cut-off events. For 271371/276557 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 303929 event pairs, 8661 based on Foata normal form. 1886/41304 useless extension candidates. Maximal degree in co-relation 144073. Up to 32317 conditions per place. [2023-11-19 07:37:21,382 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 189 selfloop transitions, 35 changer transitions 0/242 dead transitions. [2023-11-19 07:37:21,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 242 transitions, 2559 flow [2023-11-19 07:37:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:21,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:37:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 876 transitions. [2023-11-19 07:37:21,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-19 07:37:21,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 876 transitions. [2023-11-19 07:37:21,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 876 transitions. [2023-11-19 07:37:21,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:21,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 876 transitions. [2023-11-19 07:37:21,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 07:37:21,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:37:21,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:37:21,393 INFO L175 Difference]: Start difference. First operand has 111 places, 166 transitions, 1714 flow. Second operand 6 states and 876 transitions. [2023-11-19 07:37:21,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 242 transitions, 2559 flow [2023-11-19 07:37:22,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 242 transitions, 2503 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:22,109 INFO L231 Difference]: Finished difference. Result has 116 places, 176 transitions, 1914 flow [2023-11-19 07:37:22,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1914, PETRI_PLACES=116, PETRI_TRANSITIONS=176} [2023-11-19 07:37:22,110 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 47 predicate places. [2023-11-19 07:37:22,111 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 176 transitions, 1914 flow [2023-11-19 07:37:22,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.16666666666667) internal successors, (757), 6 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 07:37:22,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:22,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:22,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:37:22,112 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-19 07:37:22,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:22,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1256366387, now seen corresponding path program 2 times [2023-11-19 07:37:22,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:22,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446261148] [2023-11-19 07:37:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:22,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:22,316 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 07:37:22,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446261148] [2023-11-19 07:37:22,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446261148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:22,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:22,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:22,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649700651] [2023-11-19 07:37:22,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:22,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:22,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:22,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:22,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 280 [2023-11-19 07:37:22,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 176 transitions, 1914 flow. Second operand has 6 states, 6 states have (on average 126.16666666666667) internal successors, (757), 6 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 07:37:22,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:22,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 280 [2023-11-19 07:37:22,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand