./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/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_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:51,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:51,458 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:48:51,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:51,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:51,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:51,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:51,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:51,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:51,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:51,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:51,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:51,508 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:51,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:51,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:51,511 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:51,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:51,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:51,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:51,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:51,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:51,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:51,514 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:51,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:51,515 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:51,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:51,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:51,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:51,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:51,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:51,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:51,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:51,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:51,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:51,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:51,520 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:51,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:51,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:51,521 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:51,522 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_8cb535d8-a73d-4d15-9a20-37fe6fed133d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2023-11-19 07:48:51,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:51,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:51,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:51,847 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:51,848 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:51,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-19 07:48:54,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:55,343 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:55,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-19 07:48:55,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/data/3f1263398/da6e2dcb91e84d5cb92b80ee4f78ff70/FLAGc5f40e39d [2023-11-19 07:48:55,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/data/3f1263398/da6e2dcb91e84d5cb92b80ee4f78ff70 [2023-11-19 07:48:55,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:55,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:55,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:55,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:55,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:55,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:55" (1/1) ... [2023-11-19 07:48:55,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@149548d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:55, skipping insertion in model container [2023-11-19 07:48:55,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:55" (1/1) ... [2023-11-19 07:48:55,494 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:55,672 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:48:56,366 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2023-11-19 07:48:56,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:56,452 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:56,474 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:48:56,547 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2023-11-19 07:48:56,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:56,728 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:56,728 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:56,728 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:56,736 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:56,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56 WrapperNode [2023-11-19 07:48:56,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:56,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:56,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:56,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:56,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,828 INFO L138 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-11-19 07:48:56,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:56,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:56,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:56,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:56,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:56,883 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:56,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:56,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:56,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (1/1) ... [2023-11-19 07:48:56,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:56,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:56,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb535d8-a73d-4d15-9a20-37fe6fed133d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:48:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:48:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:48:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:48:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-19 07:48:56,979 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-19 07:48:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:56,980 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 07:48:57,302 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:57,304 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:57,557 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:57,586 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:57,586 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:48:57,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:57 BoogieIcfgContainer [2023-11-19 07:48:57,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:57,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:57,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:57,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:57,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:55" (1/3) ... [2023-11-19 07:48:57,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f791af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:57, skipping insertion in model container [2023-11-19 07:48:57,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:56" (2/3) ... [2023-11-19 07:48:57,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f791af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:57, skipping insertion in model container [2023-11-19 07:48:57,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:57" (3/3) ... [2023-11-19 07:48:57,600 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-11-19 07:48:57,610 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:48:57,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:57,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:48:57,621 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:57,697 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:48:57,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 188 transitions, 390 flow [2023-11-19 07:48:57,862 INFO L124 PetriNetUnfolderBase]: 10/234 cut-off events. [2023-11-19 07:48:57,863 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:48:57,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 234 events. 10/234 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 376 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 135. Up to 4 conditions per place. [2023-11-19 07:48:57,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 188 transitions, 390 flow [2023-11-19 07:48:57,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2023-11-19 07:48:57,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:57,905 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 172 transitions, 356 flow [2023-11-19 07:48:57,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 172 transitions, 356 flow [2023-11-19 07:48:57,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 172 transitions, 356 flow [2023-11-19 07:48:58,013 INFO L124 PetriNetUnfolderBase]: 7/207 cut-off events. [2023-11-19 07:48:58,013 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:48:58,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 207 events. 7/207 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 308 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-19 07:48:58,017 INFO L119 LiptonReduction]: Number of co-enabled transitions 2376 [2023-11-19 07:49:15,203 INFO L134 LiptonReduction]: Checked pairs total: 3774 [2023-11-19 07:49:15,203 INFO L136 LiptonReduction]: Total number of compositions: 193 [2023-11-19 07:49:15,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:15,230 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;@52bfc522, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:15,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:49:15,232 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:15,232 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:49:15,232 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:49:15,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:15,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:49:15,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:15,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash 664, now seen corresponding path program 1 times [2023-11-19 07:49:15,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:15,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50320642] [2023-11-19 07:49:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:15,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:15,511 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 07:49:15,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:15,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50320642] [2023-11-19 07:49:15,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50320642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:15,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:15,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:49:15,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456555266] [2023-11-19 07:49:15,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:15,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:49:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:15,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:49:15,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:15,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 381 [2023-11-19 07:49:15,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 07:49:15,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:15,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 381 [2023-11-19 07:49:15,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:15,752 INFO L124 PetriNetUnfolderBase]: 169/320 cut-off events. [2023-11-19 07:49:15,753 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:49:15,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 320 events. 169/320 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1274 event pairs, 168 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 572. Up to 312 conditions per place. [2023-11-19 07:49:15,763 INFO L140 encePairwiseOnDemand]: 378/381 looper letters, 24 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-11-19 07:49:15,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 110 flow [2023-11-19 07:49:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:49:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:49:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 359 transitions. [2023-11-19 07:49:15,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112860892388453 [2023-11-19 07:49:15,798 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 359 transitions. [2023-11-19 07:49:15,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 359 transitions. [2023-11-19 07:49:15,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:15,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 359 transitions. [2023-11-19 07:49:15,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 07:49:15,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 381.0) internal successors, (1143), 3 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states 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 07:49:15,824 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 381.0) internal successors, (1143), 3 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states 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 07:49:15,826 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 68 flow. Second operand 2 states and 359 transitions. [2023-11-19 07:49:15,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 110 flow [2023-11-19 07:49:15,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:49:15,833 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 54 flow [2023-11-19 07:49:15,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-11-19 07:49:15,878 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-11-19 07:49:15,878 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 54 flow [2023-11-19 07:49:15,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 07:49:15,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:15,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:49:15,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:15,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:15,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash 20443403, now seen corresponding path program 1 times [2023-11-19 07:49:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455589777] [2023-11-19 07:49:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:16,486 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 07:49:16,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455589777] [2023-11-19 07:49:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455589777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:16,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098125957] [2023-11-19 07:49:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:16,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:16,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:16,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:16,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:16,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 381 [2023-11-19 07:49:16,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 07:49:16,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:16,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 381 [2023-11-19 07:49:16,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:16,745 INFO L124 PetriNetUnfolderBase]: 218/420 cut-off events. [2023-11-19 07:49:16,746 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:49:16,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 420 events. 218/420 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1887 event pairs, 113 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 828. Up to 313 conditions per place. [2023-11-19 07:49:16,750 INFO L140 encePairwiseOnDemand]: 373/381 looper letters, 25 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-11-19 07:49:16,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 134 flow [2023-11-19 07:49:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-11-19 07:49:16,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330708661417323 [2023-11-19 07:49:16,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-11-19 07:49:16,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-11-19 07:49:16,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:16,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-11-19 07:49:16,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 07:49:16,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 07:49:16,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 07:49:16,764 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 54 flow. Second operand 3 states and 495 transitions. [2023-11-19 07:49:16,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 134 flow [2023-11-19 07:49:16,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:16,766 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 104 flow [2023-11-19 07:49:16,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-11-19 07:49:16,767 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-11-19 07:49:16,767 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 104 flow [2023-11-19 07:49:16,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 07:49:16,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:16,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:49:16,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:49:16,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:16,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 633746121, now seen corresponding path program 1 times [2023-11-19 07:49:16,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:16,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596583953] [2023-11-19 07:49:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:17,035 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 07:49:17,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:17,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596583953] [2023-11-19 07:49:17,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596583953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:17,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:17,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737760130] [2023-11-19 07:49:17,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:17,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:17,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:17,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:17,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:17,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 381 [2023-11-19 07:49:17,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 07:49:17,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:17,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 381 [2023-11-19 07:49:17,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:17,324 INFO L124 PetriNetUnfolderBase]: 313/573 cut-off events. [2023-11-19 07:49:17,324 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2023-11-19 07:49:17,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 573 events. 313/573 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2580 event pairs, 151 based on Foata normal form. 17/588 useless extension candidates. Maximal degree in co-relation 1602. Up to 462 conditions per place. [2023-11-19 07:49:17,333 INFO L140 encePairwiseOnDemand]: 374/381 looper letters, 31 selfloop transitions, 9 changer transitions 2/42 dead transitions. [2023-11-19 07:49:17,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 242 flow [2023-11-19 07:49:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-11-19 07:49:17,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4339457567804024 [2023-11-19 07:49:17,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-11-19 07:49:17,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-11-19 07:49:17,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:17,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-11-19 07:49:17,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 07:49:17,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 07:49:17,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 07:49:17,346 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 104 flow. Second operand 3 states and 496 transitions. [2023-11-19 07:49:17,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 242 flow [2023-11-19 07:49:17,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:49:17,355 INFO L231 Difference]: Finished difference. Result has 32 places, 36 transitions, 161 flow [2023-11-19 07:49:17,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=32, PETRI_TRANSITIONS=36} [2023-11-19 07:49:17,357 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-11-19 07:49:17,361 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 36 transitions, 161 flow [2023-11-19 07:49:17,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 07:49:17,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:17,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:17,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:49:17,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:17,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:17,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1046626372, now seen corresponding path program 1 times [2023-11-19 07:49:17,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:17,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435976324] [2023-11-19 07:49:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:17,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:17,510 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 07:49:17,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435976324] [2023-11-19 07:49:17,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435976324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:17,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:17,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174430768] [2023-11-19 07:49:17,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:17,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 381 [2023-11-19 07:49:17,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 36 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 07:49:17,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:17,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 381 [2023-11-19 07:49:17,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:17,640 INFO L124 PetriNetUnfolderBase]: 72/144 cut-off events. [2023-11-19 07:49:17,640 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-19 07:49:17,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 144 events. 72/144 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 407 event pairs, 15 based on Foata normal form. 16/159 useless extension candidates. Maximal degree in co-relation 409. Up to 104 conditions per place. [2023-11-19 07:49:17,643 INFO L140 encePairwiseOnDemand]: 379/381 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-19 07:49:17,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 132 flow [2023-11-19 07:49:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-11-19 07:49:17,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43919510061242345 [2023-11-19 07:49:17,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-11-19 07:49:17,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-11-19 07:49:17,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:17,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-11-19 07:49:17,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states 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 07:49:17,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 07:49:17,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states 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 07:49:17,655 INFO L175 Difference]: Start difference. First operand has 32 places, 36 transitions, 161 flow. Second operand 3 states and 502 transitions. [2023-11-19 07:49:17,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 132 flow [2023-11-19 07:49:17,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:17,658 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 50 flow [2023-11-19 07:49:17,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-11-19 07:49:17,660 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2023-11-19 07:49:17,660 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 50 flow [2023-11-19 07:49:17,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 07:49:17,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:17,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:17,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:49:17,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:17,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:17,663 INFO L85 PathProgramCache]: Analyzing trace with hash 397428345, now seen corresponding path program 1 times [2023-11-19 07:49:17,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:17,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733902325] [2023-11-19 07:49:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:17,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:19,426 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 07:49:19,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:19,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733902325] [2023-11-19 07:49:19,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733902325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:19,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:19,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:49:19,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617954223] [2023-11-19 07:49:19,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:19,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:19,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:19,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:19,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 381 [2023-11-19 07:49:19,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 50 flow. Second operand has 8 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states 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 07:49:19,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:19,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 381 [2023-11-19 07:49:19,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:20,358 INFO L124 PetriNetUnfolderBase]: 107/228 cut-off events. [2023-11-19 07:49:20,358 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-19 07:49:20,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 228 events. 107/228 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 816 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 577. Up to 95 conditions per place. [2023-11-19 07:49:20,360 INFO L140 encePairwiseOnDemand]: 373/381 looper letters, 47 selfloop transitions, 19 changer transitions 0/66 dead transitions. [2023-11-19 07:49:20,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 320 flow [2023-11-19 07:49:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:49:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:49:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1487 transitions. [2023-11-19 07:49:20,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39028871391076114 [2023-11-19 07:49:20,367 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1487 transitions. [2023-11-19 07:49:20,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1487 transitions. [2023-11-19 07:49:20,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:20,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1487 transitions. [2023-11-19 07:49:20,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 148.7) internal successors, (1487), 10 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:20,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 381.0) internal successors, (4191), 11 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states 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 07:49:20,387 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 381.0) internal successors, (4191), 11 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states 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 07:49:20,387 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 50 flow. Second operand 10 states and 1487 transitions. [2023-11-19 07:49:20,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 320 flow [2023-11-19 07:49:20,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 66 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:20,390 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 150 flow [2023-11-19 07:49:20,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=150, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-11-19 07:49:20,391 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-11-19 07:49:20,392 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 150 flow [2023-11-19 07:49:20,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states 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 07:49:20,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:20,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:20,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:49:20,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:20,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -841677787, now seen corresponding path program 2 times [2023-11-19 07:49:20,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:20,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456213191] [2023-11-19 07:49:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:20,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:21,273 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 07:49:21,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:21,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456213191] [2023-11-19 07:49:21,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456213191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:21,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:21,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:21,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820605576] [2023-11-19 07:49:21,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:21,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:21,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:21,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:21,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 381 [2023-11-19 07:49:21,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 07:49:21,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:21,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 381 [2023-11-19 07:49:21,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:21,840 INFO L124 PetriNetUnfolderBase]: 126/285 cut-off events. [2023-11-19 07:49:21,841 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-19 07:49:21,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 285 events. 126/285 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1153 event pairs, 46 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 843. Up to 113 conditions per place. [2023-11-19 07:49:21,843 INFO L140 encePairwiseOnDemand]: 373/381 looper letters, 35 selfloop transitions, 22 changer transitions 0/57 dead transitions. [2023-11-19 07:49:21,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 366 flow [2023-11-19 07:49:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:21,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 916 transitions. [2023-11-19 07:49:21,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006999125109361 [2023-11-19 07:49:21,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 916 transitions. [2023-11-19 07:49:21,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 916 transitions. [2023-11-19 07:49:21,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:21,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 916 transitions. [2023-11-19 07:49:21,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 07:49:21,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 381.0) internal successors, (2667), 7 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states 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 07:49:21,861 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 381.0) internal successors, (2667), 7 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states 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 07:49:21,862 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 150 flow. Second operand 6 states and 916 transitions. [2023-11-19 07:49:21,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 366 flow [2023-11-19 07:49:21,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 353 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:21,868 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 278 flow [2023-11-19 07:49:21,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-19 07:49:21,871 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2023-11-19 07:49:21,871 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 278 flow [2023-11-19 07:49:21,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 07:49:21,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:21,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:21,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:49:21,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:21,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:21,875 INFO L85 PathProgramCache]: Analyzing trace with hash -567185130, now seen corresponding path program 1 times [2023-11-19 07:49:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:21,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582816788] [2023-11-19 07:49:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:21,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:23,975 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 07:49:23,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:23,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582816788] [2023-11-19 07:49:23,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582816788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:23,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:23,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656602836] [2023-11-19 07:49:23,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:23,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:49:23,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:49:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:49:25,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 381 [2023-11-19 07:49:25,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 278 flow. Second operand has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:25,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:25,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 381 [2023-11-19 07:49:25,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:26,106 INFO L124 PetriNetUnfolderBase]: 165/390 cut-off events. [2023-11-19 07:49:26,106 INFO L125 PetriNetUnfolderBase]: For 788/788 co-relation queries the response was YES. [2023-11-19 07:49:26,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 390 events. 165/390 cut-off events. For 788/788 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1923 event pairs, 17 based on Foata normal form. 3/392 useless extension candidates. Maximal degree in co-relation 1355. Up to 160 conditions per place. [2023-11-19 07:49:26,110 INFO L140 encePairwiseOnDemand]: 370/381 looper letters, 73 selfloop transitions, 21 changer transitions 19/113 dead transitions. [2023-11-19 07:49:26,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 113 transitions, 924 flow [2023-11-19 07:49:26,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:49:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:49:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1469 transitions. [2023-11-19 07:49:26,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38556430446194223 [2023-11-19 07:49:26,118 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1469 transitions. [2023-11-19 07:49:26,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1469 transitions. [2023-11-19 07:49:26,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:26,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1469 transitions. [2023-11-19 07:49:26,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.9) internal successors, (1469), 10 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states 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 07:49:26,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 381.0) internal successors, (4191), 11 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states 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 07:49:26,134 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 381.0) internal successors, (4191), 11 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states 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 07:49:26,136 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 278 flow. Second operand 10 states and 1469 transitions. [2023-11-19 07:49:26,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 113 transitions, 924 flow [2023-11-19 07:49:26,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 113 transitions, 911 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:26,145 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 482 flow [2023-11-19 07:49:26,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=482, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-11-19 07:49:26,147 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2023-11-19 07:49:26,148 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 482 flow [2023-11-19 07:49:26,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:26,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:26,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:26,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:49:26,150 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:26,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:26,150 INFO L85 PathProgramCache]: Analyzing trace with hash 963300630, now seen corresponding path program 2 times [2023-11-19 07:49:26,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998171926] [2023-11-19 07:49:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:28,150 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 07:49:28,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:28,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998171926] [2023-11-19 07:49:28,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998171926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:28,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:28,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:28,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068596767] [2023-11-19 07:49:28,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:28,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:49:28,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:28,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:49:28,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:49:29,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 381 [2023-11-19 07:49:29,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 482 flow. Second operand has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:29,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:29,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 381 [2023-11-19 07:49:29,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:29,934 INFO L124 PetriNetUnfolderBase]: 187/440 cut-off events. [2023-11-19 07:49:29,934 INFO L125 PetriNetUnfolderBase]: For 1524/1524 co-relation queries the response was YES. [2023-11-19 07:49:29,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 440 events. 187/440 cut-off events. For 1524/1524 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2211 event pairs, 38 based on Foata normal form. 3/442 useless extension candidates. Maximal degree in co-relation 1954. Up to 246 conditions per place. [2023-11-19 07:49:29,940 INFO L140 encePairwiseOnDemand]: 372/381 looper letters, 64 selfloop transitions, 26 changer transitions 18/108 dead transitions. [2023-11-19 07:49:29,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 1058 flow [2023-11-19 07:49:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:49:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:49:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1463 transitions. [2023-11-19 07:49:29,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38398950131233595 [2023-11-19 07:49:29,948 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1463 transitions. [2023-11-19 07:49:29,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1463 transitions. [2023-11-19 07:49:29,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:29,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1463 transitions. [2023-11-19 07:49:29,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.3) internal successors, (1463), 10 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states 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 07:49:29,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 381.0) internal successors, (4191), 11 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states 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 07:49:29,965 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 381.0) internal successors, (4191), 11 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states 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 07:49:29,966 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 482 flow. Second operand 10 states and 1463 transitions. [2023-11-19 07:49:29,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 1058 flow [2023-11-19 07:49:29,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 108 transitions, 1002 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-11-19 07:49:29,977 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 673 flow [2023-11-19 07:49:29,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=673, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2023-11-19 07:49:29,981 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-11-19 07:49:29,981 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 673 flow [2023-11-19 07:49:29,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:29,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:29,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:29,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:49:29,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:29,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2029848952, now seen corresponding path program 3 times [2023-11-19 07:49:29,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:29,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069528351] [2023-11-19 07:49:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:29,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:31,639 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 07:49:31,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069528351] [2023-11-19 07:49:31,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069528351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:31,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:31,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:31,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397322886] [2023-11-19 07:49:31,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:31,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:49:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:31,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:49:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:49:32,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 381 [2023-11-19 07:49:32,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 673 flow. Second operand has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:32,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:32,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 381 [2023-11-19 07:49:32,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:33,487 INFO L124 PetriNetUnfolderBase]: 186/444 cut-off events. [2023-11-19 07:49:33,488 INFO L125 PetriNetUnfolderBase]: For 2016/2016 co-relation queries the response was YES. [2023-11-19 07:49:33,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2180 conditions, 444 events. 186/444 cut-off events. For 2016/2016 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2307 event pairs, 22 based on Foata normal form. 3/446 useless extension candidates. Maximal degree in co-relation 2158. Up to 177 conditions per place. [2023-11-19 07:49:33,494 INFO L140 encePairwiseOnDemand]: 370/381 looper letters, 75 selfloop transitions, 35 changer transitions 18/128 dead transitions. [2023-11-19 07:49:33,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 1326 flow [2023-11-19 07:49:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:49:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:49:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1758 transitions. [2023-11-19 07:49:33,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38451443569553806 [2023-11-19 07:49:33,505 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1758 transitions. [2023-11-19 07:49:33,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1758 transitions. [2023-11-19 07:49:33,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:33,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1758 transitions. [2023-11-19 07:49:33,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.5) internal successors, (1758), 12 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states 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 07:49:33,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 381.0) internal successors, (4953), 13 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states 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 07:49:33,524 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 381.0) internal successors, (4953), 13 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states 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 07:49:33,524 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 673 flow. Second operand 12 states and 1758 transitions. [2023-11-19 07:49:33,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 1326 flow [2023-11-19 07:49:33,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 1250 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-11-19 07:49:33,542 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 811 flow [2023-11-19 07:49:33,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=811, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2023-11-19 07:49:33,543 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2023-11-19 07:49:33,543 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 811 flow [2023-11-19 07:49:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:33,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:33,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:33,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:49:33,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:33,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:33,546 INFO L85 PathProgramCache]: Analyzing trace with hash -291174388, now seen corresponding path program 4 times [2023-11-19 07:49:33,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666608053] [2023-11-19 07:49:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:35,320 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 07:49:35,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:35,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666608053] [2023-11-19 07:49:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666608053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:35,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:35,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:35,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297518546] [2023-11-19 07:49:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:35,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:49:35,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:35,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:49:35,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:49:36,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 381 [2023-11-19 07:49:36,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 811 flow. Second operand has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:36,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:36,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 381 [2023-11-19 07:49:36,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:37,321 INFO L124 PetriNetUnfolderBase]: 172/419 cut-off events. [2023-11-19 07:49:37,322 INFO L125 PetriNetUnfolderBase]: For 2341/2341 co-relation queries the response was YES. [2023-11-19 07:49:37,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 419 events. 172/419 cut-off events. For 2341/2341 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2136 event pairs, 11 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 2180. Up to 165 conditions per place. [2023-11-19 07:49:37,328 INFO L140 encePairwiseOnDemand]: 371/381 looper letters, 69 selfloop transitions, 35 changer transitions 14/118 dead transitions. [2023-11-19 07:49:37,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 1322 flow [2023-11-19 07:49:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:49:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:49:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1468 transitions. [2023-11-19 07:49:37,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38530183727034123 [2023-11-19 07:49:37,336 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1468 transitions. [2023-11-19 07:49:37,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1468 transitions. [2023-11-19 07:49:37,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:37,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1468 transitions. [2023-11-19 07:49:37,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.8) internal successors, (1468), 10 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states 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 07:49:37,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 381.0) internal successors, (4191), 11 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states 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 07:49:37,351 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 381.0) internal successors, (4191), 11 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states 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 07:49:37,351 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 811 flow. Second operand 10 states and 1468 transitions. [2023-11-19 07:49:37,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 1322 flow [2023-11-19 07:49:37,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 1238 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-19 07:49:37,369 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 874 flow [2023-11-19 07:49:37,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=874, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-11-19 07:49:37,370 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2023-11-19 07:49:37,370 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 874 flow [2023-11-19 07:49:37,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:37,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:37,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:37,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:49:37,372 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:37,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:37,372 INFO L85 PathProgramCache]: Analyzing trace with hash 654425594, now seen corresponding path program 5 times [2023-11-19 07:49:37,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:37,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510263622] [2023-11-19 07:49:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:37,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:39,004 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 07:49:39,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:39,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510263622] [2023-11-19 07:49:39,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510263622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:39,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:39,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:39,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365703532] [2023-11-19 07:49:39,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:39,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:49:39,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:39,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:49:39,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:49:39,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 381 [2023-11-19 07:49:39,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 874 flow. Second operand has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states 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 07:49:39,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:39,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 381 [2023-11-19 07:49:39,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand