./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.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_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/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_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/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_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:06,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:06,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:40:06,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:06,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:06,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:06,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:06,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:06,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:06,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:06,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:06,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:06,622 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:06,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:06,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:06,626 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:06,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:06,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:06,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:06,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:06,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:06,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:06,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:06,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:06,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:06,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:06,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:06,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:06,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:06,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:06,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:06,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:06,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:06,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:06,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:06,639 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:06,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:06,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:06,640 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:06,640 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_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2023-11-19 07:40:06,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:06,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:06,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:06,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:06,954 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:06,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-11-19 07:40:10,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:10,466 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:10,468 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-11-19 07:40:10,495 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/data/eb56aa871/12c1703872904e54ae061c0d3b5a5d72/FLAGb171449be [2023-11-19 07:40:10,668 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/data/eb56aa871/12c1703872904e54ae061c0d3b5a5d72 [2023-11-19 07:40:10,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:10,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:10,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:10,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:10,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:10,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:10" (1/1) ... [2023-11-19 07:40:10,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbbfe87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:10, skipping insertion in model container [2023-11-19 07:40:10,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:10" (1/1) ... [2023-11-19 07:40:10,763 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:10,974 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_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2023-11-19 07:40:11,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:11,324 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:11,338 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_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2023-11-19 07:40:11,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:11,482 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:11,482 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:11,490 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:11,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11 WrapperNode [2023-11-19 07:40:11,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:11,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:11,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:11,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:11,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,591 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-11-19 07:40:11,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:11,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:11,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:11,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:11,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:11,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:11,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:11,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:11,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (1/1) ... [2023-11-19 07:40:11,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:11,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:11,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:11,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:11,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:40:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:40:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:40:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:40:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:40:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:40:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:40:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:40:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:40:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:11,782 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 07:40:11,983 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:11,986 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:12,541 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:12,854 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:12,854 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:40:12,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:12 BoogieIcfgContainer [2023-11-19 07:40:12,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:12,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:12,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:12,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:12,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:10" (1/3) ... [2023-11-19 07:40:12,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642f49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:12, skipping insertion in model container [2023-11-19 07:40:12,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:11" (2/3) ... [2023-11-19 07:40:12,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642f49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:12, skipping insertion in model container [2023-11-19 07:40:12,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:12" (3/3) ... [2023-11-19 07:40:12,876 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-11-19 07:40:12,884 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:40:12,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:12,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:40:12,896 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:40:12,976 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:40:13,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 115 transitions, 242 flow [2023-11-19 07:40:13,098 INFO L124 PetriNetUnfolderBase]: 2/112 cut-off events. [2023-11-19 07:40:13,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:13,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-11-19 07:40:13,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 115 transitions, 242 flow [2023-11-19 07:40:13,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 112 transitions, 233 flow [2023-11-19 07:40:13,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:13,160 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 112 transitions, 233 flow [2023-11-19 07:40:13,164 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 112 transitions, 233 flow [2023-11-19 07:40:13,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 233 flow [2023-11-19 07:40:13,225 INFO L124 PetriNetUnfolderBase]: 2/112 cut-off events. [2023-11-19 07:40:13,225 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:13,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-11-19 07:40:13,230 INFO L119 LiptonReduction]: Number of co-enabled transitions 2402 [2023-11-19 07:40:18,627 INFO L134 LiptonReduction]: Checked pairs total: 7244 [2023-11-19 07:40:18,628 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-11-19 07:40:18,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:18,652 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;@4e776599, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:18,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:40:18,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:18,658 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-19 07:40:18,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:18,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:18,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:18,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:18,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1489276123, now seen corresponding path program 1 times [2023-11-19 07:40:18,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:18,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016965048] [2023-11-19 07:40:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:18,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:19,279 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 07:40:19,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:19,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016965048] [2023-11-19 07:40:19,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016965048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:19,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:19,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627466177] [2023-11-19 07:40:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:19,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:19,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:19,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 214 [2023-11-19 07:40:19,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 07:40:19,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:19,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 214 [2023-11-19 07:40:19,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:20,331 INFO L124 PetriNetUnfolderBase]: 2147/3121 cut-off events. [2023-11-19 07:40:20,331 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-19 07:40:20,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6316 conditions, 3121 events. 2147/3121 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14535 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6305. Up to 2576 conditions per place. [2023-11-19 07:40:20,366 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-11-19 07:40:20,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-11-19 07:40:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-11-19 07:40:20,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5077881619937694 [2023-11-19 07:40:20,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-11-19 07:40:20,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-11-19 07:40:20,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:20,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-11-19 07:40:20,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 07:40:20,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 07:40:20,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 07:40:20,425 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 326 transitions. [2023-11-19 07:40:20,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-11-19 07:40:20,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:40:20,433 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-11-19 07:40:20,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-11-19 07:40:20,442 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-19 07:40:20,442 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-11-19 07:40:20,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 07:40:20,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:20,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:20,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:20,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:20,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash -970183659, now seen corresponding path program 1 times [2023-11-19 07:40:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:20,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606427192] [2023-11-19 07:40:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:20,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:20,817 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 07:40:20,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:20,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606427192] [2023-11-19 07:40:20,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606427192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:20,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:20,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:20,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999947616] [2023-11-19 07:40:20,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:20,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:20,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:20,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 214 [2023-11-19 07:40:20,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 07:40:20,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:20,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 214 [2023-11-19 07:40:20,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:21,416 INFO L124 PetriNetUnfolderBase]: 1466/2170 cut-off events. [2023-11-19 07:40:21,416 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-19 07:40:21,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2170 events. 1466/2170 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9266 event pairs, 698 based on Foata normal form. 90/2258 useless extension candidates. Maximal degree in co-relation 4493. Up to 1189 conditions per place. [2023-11-19 07:40:21,442 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-19 07:40:21,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2023-11-19 07:40:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-19 07:40:21,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031152647975078 [2023-11-19 07:40:21,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-19 07:40:21,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-19 07:40:21,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:21,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-19 07:40:21,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 07:40:21,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 07:40:21,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 07:40:21,464 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 323 transitions. [2023-11-19 07:40:21,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2023-11-19 07:40:21,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:21,469 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 62 flow [2023-11-19 07:40:21,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-11-19 07:40:21,471 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-19 07:40:21,479 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2023-11-19 07:40:21,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 07:40:21,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:21,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:21,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:21,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:21,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1121903899, now seen corresponding path program 1 times [2023-11-19 07:40:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:21,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881062922] [2023-11-19 07:40:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:21,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:23,050 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 07:40:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881062922] [2023-11-19 07:40:23,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881062922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:23,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031742926] [2023-11-19 07:40:23,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:23,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:23,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 214 [2023-11-19 07:40:23,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 07:40:23,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:23,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 214 [2023-11-19 07:40:23,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:23,871 INFO L124 PetriNetUnfolderBase]: 1617/2398 cut-off events. [2023-11-19 07:40:23,871 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-19 07:40:23,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 2398 events. 1617/2398 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10520 event pairs, 990 based on Foata normal form. 18/2416 useless extension candidates. Maximal degree in co-relation 5150. Up to 2164 conditions per place. [2023-11-19 07:40:23,897 INFO L140 encePairwiseOnDemand]: 207/214 looper letters, 42 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-11-19 07:40:23,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 227 flow [2023-11-19 07:40:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:40:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 517 transitions. [2023-11-19 07:40:23,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48317757009345796 [2023-11-19 07:40:23,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 517 transitions. [2023-11-19 07:40:23,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 517 transitions. [2023-11-19 07:40:23,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:23,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 517 transitions. [2023-11-19 07:40:23,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 07:40:23,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 07:40:23,913 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 07:40:23,913 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 5 states and 517 transitions. [2023-11-19 07:40:23,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 227 flow [2023-11-19 07:40:23,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:23,924 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 118 flow [2023-11-19 07:40:23,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-19 07:40:23,926 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-11-19 07:40:23,931 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 118 flow [2023-11-19 07:40:23,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 07:40:23,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:23,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:23,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:40:23,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:23,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1907541717, now seen corresponding path program 2 times [2023-11-19 07:40:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:23,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733503769] [2023-11-19 07:40:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:25,726 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 07:40:25,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733503769] [2023-11-19 07:40:25,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733503769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:25,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:25,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:25,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120513819] [2023-11-19 07:40:25,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:25,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:25,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:25,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:25,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 214 [2023-11-19 07:40:25,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 07:40:25,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:25,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 214 [2023-11-19 07:40:25,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:27,339 INFO L124 PetriNetUnfolderBase]: 3082/4635 cut-off events. [2023-11-19 07:40:27,340 INFO L125 PetriNetUnfolderBase]: For 1908/1908 co-relation queries the response was YES. [2023-11-19 07:40:27,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11405 conditions, 4635 events. 3082/4635 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24197 event pairs, 450 based on Foata normal form. 90/4724 useless extension candidates. Maximal degree in co-relation 11391. Up to 1785 conditions per place. [2023-11-19 07:40:27,380 INFO L140 encePairwiseOnDemand]: 202/214 looper letters, 67 selfloop transitions, 15 changer transitions 5/88 dead transitions. [2023-11-19 07:40:27,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 88 transitions, 460 flow [2023-11-19 07:40:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 621 transitions. [2023-11-19 07:40:27,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48364485981308414 [2023-11-19 07:40:27,384 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 621 transitions. [2023-11-19 07:40:27,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 621 transitions. [2023-11-19 07:40:27,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:27,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 621 transitions. [2023-11-19 07:40:27,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 07:40:27,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states 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 07:40:27,394 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states 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 07:40:27,394 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 118 flow. Second operand 6 states and 621 transitions. [2023-11-19 07:40:27,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 88 transitions, 460 flow [2023-11-19 07:40:27,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 88 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:27,405 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 239 flow [2023-11-19 07:40:27,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-19 07:40:27,408 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-11-19 07:40:27,408 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 239 flow [2023-11-19 07:40:27,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 07:40:27,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:27,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:27,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:27,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:27,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1515187992, now seen corresponding path program 1 times [2023-11-19 07:40:27,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:27,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170188964] [2023-11-19 07:40:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:28,918 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 07:40:28,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:28,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170188964] [2023-11-19 07:40:28,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170188964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:28,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:28,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632655457] [2023-11-19 07:40:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:28,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:40:28,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:40:28,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:29,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 214 [2023-11-19 07:40:29,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 07:40:29,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:29,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 214 [2023-11-19 07:40:29,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:31,015 INFO L124 PetriNetUnfolderBase]: 3572/5365 cut-off events. [2023-11-19 07:40:31,016 INFO L125 PetriNetUnfolderBase]: For 5579/5579 co-relation queries the response was YES. [2023-11-19 07:40:31,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 5365 events. 3572/5365 cut-off events. For 5579/5579 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 28393 event pairs, 441 based on Foata normal form. 6/5371 useless extension candidates. Maximal degree in co-relation 16748. Up to 4224 conditions per place. [2023-11-19 07:40:31,083 INFO L140 encePairwiseOnDemand]: 202/214 looper letters, 74 selfloop transitions, 50 changer transitions 6/131 dead transitions. [2023-11-19 07:40:31,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 131 transitions, 877 flow [2023-11-19 07:40:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:40:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:40:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1019 transitions. [2023-11-19 07:40:31,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4761682242990654 [2023-11-19 07:40:31,090 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1019 transitions. [2023-11-19 07:40:31,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1019 transitions. [2023-11-19 07:40:31,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:31,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1019 transitions. [2023-11-19 07:40:31,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states 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 07:40:31,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 214.0) internal successors, (2354), 11 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states 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 07:40:31,107 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 214.0) internal successors, (2354), 11 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states 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 07:40:31,108 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 239 flow. Second operand 10 states and 1019 transitions. [2023-11-19 07:40:31,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 131 transitions, 877 flow [2023-11-19 07:40:31,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 843 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:31,134 INFO L231 Difference]: Finished difference. Result has 58 places, 82 transitions, 598 flow [2023-11-19 07:40:31,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=598, PETRI_PLACES=58, PETRI_TRANSITIONS=82} [2023-11-19 07:40:31,138 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-11-19 07:40:31,138 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 82 transitions, 598 flow [2023-11-19 07:40:31,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 07:40:31,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:31,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:31,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:31,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash -406159310, now seen corresponding path program 2 times [2023-11-19 07:40:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:31,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088032790] [2023-11-19 07:40:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:31,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:32,363 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 07:40:32,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:32,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088032790] [2023-11-19 07:40:32,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088032790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:32,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:32,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:32,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408991679] [2023-11-19 07:40:32,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:32,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:32,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:32,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:32,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 214 [2023-11-19 07:40:32,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 82 transitions, 598 flow. Second operand has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states 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 07:40:32,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:32,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 214 [2023-11-19 07:40:32,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:34,067 INFO L124 PetriNetUnfolderBase]: 3318/5083 cut-off events. [2023-11-19 07:40:34,068 INFO L125 PetriNetUnfolderBase]: For 13559/13559 co-relation queries the response was YES. [2023-11-19 07:40:34,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19900 conditions, 5083 events. 3318/5083 cut-off events. For 13559/13559 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 27750 event pairs, 443 based on Foata normal form. 28/5111 useless extension candidates. Maximal degree in co-relation 19877. Up to 3563 conditions per place. [2023-11-19 07:40:34,133 INFO L140 encePairwiseOnDemand]: 201/214 looper letters, 85 selfloop transitions, 54 changer transitions 0/140 dead transitions. [2023-11-19 07:40:34,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 140 transitions, 1230 flow [2023-11-19 07:40:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:40:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:40:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 809 transitions. [2023-11-19 07:40:34,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725467289719626 [2023-11-19 07:40:34,139 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 809 transitions. [2023-11-19 07:40:34,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 809 transitions. [2023-11-19 07:40:34,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:34,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 809 transitions. [2023-11-19 07:40:34,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.125) internal successors, (809), 8 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 07:40:34,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 07:40:34,152 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 214.0) internal successors, (1926), 9 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states 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 07:40:34,152 INFO L175 Difference]: Start difference. First operand has 58 places, 82 transitions, 598 flow. Second operand 8 states and 809 transitions. [2023-11-19 07:40:34,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 140 transitions, 1230 flow [2023-11-19 07:40:34,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 140 transitions, 1158 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:34,197 INFO L231 Difference]: Finished difference. Result has 68 places, 105 transitions, 919 flow [2023-11-19 07:40:34,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=919, PETRI_PLACES=68, PETRI_TRANSITIONS=105} [2023-11-19 07:40:34,201 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-11-19 07:40:34,201 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 105 transitions, 919 flow [2023-11-19 07:40:34,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states 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 07:40:34,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:34,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:34,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:34,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:34,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash -444944960, now seen corresponding path program 3 times [2023-11-19 07:40:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:34,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407699790] [2023-11-19 07:40:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:34,463 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 07:40:34,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:34,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407699790] [2023-11-19 07:40:34,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407699790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:34,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:34,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:34,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12787523] [2023-11-19 07:40:34,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:34,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:34,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:34,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:34,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 214 [2023-11-19 07:40:34,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 105 transitions, 919 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 07:40:34,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:34,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 214 [2023-11-19 07:40:34,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:35,652 INFO L124 PetriNetUnfolderBase]: 2418/3927 cut-off events. [2023-11-19 07:40:35,652 INFO L125 PetriNetUnfolderBase]: For 21904/21904 co-relation queries the response was YES. [2023-11-19 07:40:35,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17457 conditions, 3927 events. 2418/3927 cut-off events. For 21904/21904 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23035 event pairs, 250 based on Foata normal form. 443/4368 useless extension candidates. Maximal degree in co-relation 17429. Up to 2015 conditions per place. [2023-11-19 07:40:35,690 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 136 selfloop transitions, 4 changer transitions 114/255 dead transitions. [2023-11-19 07:40:35,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 255 transitions, 2804 flow [2023-11-19 07:40:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:40:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2023-11-19 07:40:35,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785046728971963 [2023-11-19 07:40:35,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2023-11-19 07:40:35,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2023-11-19 07:40:35,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:35,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2023-11-19 07:40:35,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 07:40:35,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 07:40:35,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states 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 07:40:35,702 INFO L175 Difference]: Start difference. First operand has 68 places, 105 transitions, 919 flow. Second operand 5 states and 512 transitions. [2023-11-19 07:40:35,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 255 transitions, 2804 flow [2023-11-19 07:40:35,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 255 transitions, 2597 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-19 07:40:35,740 INFO L231 Difference]: Finished difference. Result has 70 places, 96 transitions, 817 flow [2023-11-19 07:40:35,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=817, PETRI_PLACES=70, PETRI_TRANSITIONS=96} [2023-11-19 07:40:35,741 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2023-11-19 07:40:35,742 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 96 transitions, 817 flow [2023-11-19 07:40:35,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 07:40:35,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:35,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:35,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:40:35,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:35,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:35,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1225102714, now seen corresponding path program 1 times [2023-11-19 07:40:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:35,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278495599] [2023-11-19 07:40:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:35,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:36,079 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 07:40:36,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278495599] [2023-11-19 07:40:36,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278495599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:36,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:36,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:36,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659289476] [2023-11-19 07:40:36,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:36,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:36,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:36,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:36,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:36,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 214 [2023-11-19 07:40:36,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 96 transitions, 817 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 07:40:36,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:36,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 214 [2023-11-19 07:40:36,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:36,873 INFO L124 PetriNetUnfolderBase]: 1133/2000 cut-off events. [2023-11-19 07:40:36,873 INFO L125 PetriNetUnfolderBase]: For 11582/11582 co-relation queries the response was YES. [2023-11-19 07:40:36,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9294 conditions, 2000 events. 1133/2000 cut-off events. For 11582/11582 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11131 event pairs, 146 based on Foata normal form. 213/2211 useless extension candidates. Maximal degree in co-relation 9263. Up to 774 conditions per place. [2023-11-19 07:40:36,897 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 141 selfloop transitions, 7 changer transitions 65/214 dead transitions. [2023-11-19 07:40:36,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 214 transitions, 2214 flow [2023-11-19 07:40:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 616 transitions. [2023-11-19 07:40:36,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797507788161994 [2023-11-19 07:40:36,903 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 616 transitions. [2023-11-19 07:40:36,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 616 transitions. [2023-11-19 07:40:36,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:36,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 616 transitions. [2023-11-19 07:40:36,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 07:40:36,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states 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 07:40:36,912 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states 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 07:40:36,913 INFO L175 Difference]: Start difference. First operand has 70 places, 96 transitions, 817 flow. Second operand 6 states and 616 transitions. [2023-11-19 07:40:36,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 214 transitions, 2214 flow [2023-11-19 07:40:36,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 214 transitions, 2148 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-19 07:40:36,947 INFO L231 Difference]: Finished difference. Result has 72 places, 87 transitions, 742 flow [2023-11-19 07:40:36,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=72, PETRI_TRANSITIONS=87} [2023-11-19 07:40:36,950 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-11-19 07:40:36,951 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 87 transitions, 742 flow [2023-11-19 07:40:36,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 07:40:36,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:36,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:36,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:36,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:36,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1403026535, now seen corresponding path program 1 times [2023-11-19 07:40:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:36,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101207464] [2023-11-19 07:40:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:36,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:38,483 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 07:40:38,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:38,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101207464] [2023-11-19 07:40:38,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101207464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:38,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:38,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:38,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971908008] [2023-11-19 07:40:38,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:38,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:40:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:40:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:38,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 214 [2023-11-19 07:40:38,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 87 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 93.25) internal successors, (746), 8 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 07:40:38,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:38,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 214 [2023-11-19 07:40:38,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:39,403 INFO L124 PetriNetUnfolderBase]: 871/1606 cut-off events. [2023-11-19 07:40:39,404 INFO L125 PetriNetUnfolderBase]: For 6034/6034 co-relation queries the response was YES. [2023-11-19 07:40:39,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 1606 events. 871/1606 cut-off events. For 6034/6034 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8712 event pairs, 141 based on Foata normal form. 13/1617 useless extension candidates. Maximal degree in co-relation 7705. Up to 653 conditions per place. [2023-11-19 07:40:39,419 INFO L140 encePairwiseOnDemand]: 203/214 looper letters, 52 selfloop transitions, 23 changer transitions 63/139 dead transitions. [2023-11-19 07:40:39,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 139 transitions, 1448 flow [2023-11-19 07:40:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:40:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 709 transitions. [2023-11-19 07:40:39,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732977303070761 [2023-11-19 07:40:39,424 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 709 transitions. [2023-11-19 07:40:39,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 709 transitions. [2023-11-19 07:40:39,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:39,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 709 transitions. [2023-11-19 07:40:39,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.28571428571429) internal successors, (709), 7 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 07:40:39,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states 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 07:40:39,434 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states 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 07:40:39,435 INFO L175 Difference]: Start difference. First operand has 72 places, 87 transitions, 742 flow. Second operand 7 states and 709 transitions. [2023-11-19 07:40:39,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 139 transitions, 1448 flow [2023-11-19 07:40:39,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 139 transitions, 1338 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-11-19 07:40:39,467 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 525 flow [2023-11-19 07:40:39,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=525, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2023-11-19 07:40:39,468 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2023-11-19 07:40:39,469 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 525 flow [2023-11-19 07:40:39,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 93.25) internal successors, (746), 8 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 07:40:39,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:39,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:39,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:39,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:39,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1751345539, now seen corresponding path program 2 times [2023-11-19 07:40:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:39,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962578310] [2023-11-19 07:40:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:39,839 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 07:40:39,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:39,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962578310] [2023-11-19 07:40:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962578310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:39,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:39,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401812444] [2023-11-19 07:40:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:39,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:39,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 214 [2023-11-19 07:40:39,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 07:40:39,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:39,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 214 [2023-11-19 07:40:39,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:40,183 INFO L124 PetriNetUnfolderBase]: 298/580 cut-off events. [2023-11-19 07:40:40,183 INFO L125 PetriNetUnfolderBase]: For 2707/2707 co-relation queries the response was YES. [2023-11-19 07:40:40,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2952 conditions, 580 events. 298/580 cut-off events. For 2707/2707 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2567 event pairs, 41 based on Foata normal form. 24/602 useless extension candidates. Maximal degree in co-relation 2919. Up to 269 conditions per place. [2023-11-19 07:40:40,189 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 80 selfloop transitions, 10 changer transitions 15/106 dead transitions. [2023-11-19 07:40:40,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 1250 flow [2023-11-19 07:40:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:40:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2023-11-19 07:40:40,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539385847797063 [2023-11-19 07:40:40,193 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2023-11-19 07:40:40,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2023-11-19 07:40:40,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:40,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2023-11-19 07:40:40,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states 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 07:40:40,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states 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 07:40:40,201 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states 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 07:40:40,201 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 525 flow. Second operand 7 states and 680 transitions. [2023-11-19 07:40:40,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 1250 flow [2023-11-19 07:40:40,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 106 transitions, 1006 flow, removed 28 selfloop flow, removed 15 redundant places. [2023-11-19 07:40:40,214 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 427 flow [2023-11-19 07:40:40,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-11-19 07:40:40,216 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-11-19 07:40:40,216 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 427 flow [2023-11-19 07:40:40,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 07:40:40,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:40,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:40,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:40:40,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:40,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:40,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1887906816, now seen corresponding path program 1 times [2023-11-19 07:40:40,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:40,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061707554] [2023-11-19 07:40:40,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:40,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:40,655 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 07:40:40,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:40,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061707554] [2023-11-19 07:40:40,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061707554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:40,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:40,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:40,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123394602] [2023-11-19 07:40:40,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:40,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:40,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:40,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:40,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:40,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 214 [2023-11-19 07:40:40,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 07:40:40,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:40,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 214 [2023-11-19 07:40:40,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:40,985 INFO L124 PetriNetUnfolderBase]: 373/691 cut-off events. [2023-11-19 07:40:40,985 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2023-11-19 07:40:40,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 691 events. 373/691 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3078 event pairs, 61 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 3152. Up to 453 conditions per place. [2023-11-19 07:40:40,990 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 37 selfloop transitions, 1 changer transitions 49/87 dead transitions. [2023-11-19 07:40:40,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 851 flow [2023-11-19 07:40:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 419 transitions. [2023-11-19 07:40:40,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894859813084112 [2023-11-19 07:40:40,993 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 419 transitions. [2023-11-19 07:40:40,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 419 transitions. [2023-11-19 07:40:40,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:40,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 419 transitions. [2023-11-19 07:40:40,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 07:40:40,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states 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 07:40:40,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states 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 07:40:40,999 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 427 flow. Second operand 4 states and 419 transitions. [2023-11-19 07:40:40,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 851 flow [2023-11-19 07:40:41,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 767 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-19 07:40:41,006 INFO L231 Difference]: Finished difference. Result has 61 places, 32 transitions, 197 flow [2023-11-19 07:40:41,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=61, PETRI_TRANSITIONS=32} [2023-11-19 07:40:41,008 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-11-19 07:40:41,008 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 32 transitions, 197 flow [2023-11-19 07:40:41,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 07:40:41,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:41,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:41,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:40:41,009 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:40:41,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:41,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1271891320, now seen corresponding path program 2 times [2023-11-19 07:40:41,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:41,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334132946] [2023-11-19 07:40:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:41,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:45,089 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 07:40:45,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334132946] [2023-11-19 07:40:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334132946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:45,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:40:45,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797695157] [2023-11-19 07:40:45,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:45,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:40:45,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:40:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:40:45,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 214 [2023-11-19 07:40:45,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 32 transitions, 197 flow. Second operand has 13 states, 13 states have (on average 89.76923076923077) internal successors, (1167), 13 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states 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 07:40:45,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:45,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 214 [2023-11-19 07:40:45,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:45,844 INFO L124 PetriNetUnfolderBase]: 145/290 cut-off events. [2023-11-19 07:40:45,844 INFO L125 PetriNetUnfolderBase]: For 711/715 co-relation queries the response was YES. [2023-11-19 07:40:45,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 290 events. 145/290 cut-off events. For 711/715 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1083 event pairs, 22 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 1269. Up to 138 conditions per place. [2023-11-19 07:40:45,846 INFO L140 encePairwiseOnDemand]: 206/214 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-11-19 07:40:45,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 562 flow [2023-11-19 07:40:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:40:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:40:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 843 transitions. [2023-11-19 07:40:45,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43769470404984423 [2023-11-19 07:40:45,852 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 843 transitions. [2023-11-19 07:40:45,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 843 transitions. [2023-11-19 07:40:45,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:45,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 843 transitions. [2023-11-19 07:40:45,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.66666666666667) internal successors, (843), 9 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 07:40:45,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 214.0) internal successors, (2140), 10 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states 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 07:40:45,863 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 214.0) internal successors, (2140), 10 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states 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 07:40:45,864 INFO L175 Difference]: Start difference. First operand has 61 places, 32 transitions, 197 flow. Second operand 9 states and 843 transitions. [2023-11-19 07:40:45,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 562 flow [2023-11-19 07:40:45,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 521 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-19 07:40:45,868 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-11-19 07:40:45,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-11-19 07:40:45,869 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-11-19 07:40:45,870 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-11-19 07:40:45,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 89.76923076923077) internal successors, (1167), 13 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states 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 07:40:45,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-19 07:40:45,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-19 07:40:45,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-19 07:40:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-19 07:40:45,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-19 07:40:45,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-19 07:40:45,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:40:45,880 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1] [2023-11-19 07:40:45,887 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:40:45,887 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:40:45,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:40:45 BasicIcfg [2023-11-19 07:40:45,893 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:40:45,893 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:40:45,894 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:40:45,894 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:40:45,894 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:12" (3/4) ... [2023-11-19 07:40:45,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:40:45,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 07:40:45,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 07:40:45,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-19 07:40:45,912 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-11-19 07:40:45,913 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-19 07:40:45,913 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:40:45,914 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:40:46,064 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:40:46,064 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:40:46,064 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:40:46,065 INFO L158 Benchmark]: Toolchain (without parser) took 35389.57ms. Allocated memory was 132.1MB in the beginning and 715.1MB in the end (delta: 583.0MB). Free memory was 80.7MB in the beginning and 332.2MB in the end (delta: -251.5MB). Peak memory consumption was 331.8MB. Max. memory is 16.1GB. [2023-11-19 07:40:46,066 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:46,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 812.70ms. Allocated memory is still 132.1MB. Free memory was 80.4MB in the beginning and 96.1MB in the end (delta: -15.7MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2023-11-19 07:40:46,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.18ms. Allocated memory is still 132.1MB. Free memory was 96.1MB in the beginning and 92.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:40:46,067 INFO L158 Benchmark]: Boogie Preprocessor took 94.60ms. Allocated memory is still 132.1MB. Free memory was 92.8MB in the beginning and 90.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:40:46,068 INFO L158 Benchmark]: RCFGBuilder took 1174.71ms. Allocated memory is still 132.1MB. Free memory was 90.3MB in the beginning and 73.0MB in the end (delta: 17.3MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2023-11-19 07:40:46,068 INFO L158 Benchmark]: TraceAbstraction took 33025.88ms. Allocated memory was 132.1MB in the beginning and 715.1MB in the end (delta: 583.0MB). Free memory was 72.4MB in the beginning and 337.5MB in the end (delta: -265.1MB). Peak memory consumption was 317.5MB. Max. memory is 16.1GB. [2023-11-19 07:40:46,069 INFO L158 Benchmark]: Witness Printer took 171.14ms. Allocated memory is still 715.1MB. Free memory was 337.5MB in the beginning and 332.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:40:46,071 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 812.70ms. Allocated memory is still 132.1MB. Free memory was 80.4MB in the beginning and 96.1MB in the end (delta: -15.7MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.18ms. Allocated memory is still 132.1MB. Free memory was 96.1MB in the beginning and 92.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.60ms. Allocated memory is still 132.1MB. Free memory was 92.8MB in the beginning and 90.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1174.71ms. Allocated memory is still 132.1MB. Free memory was 90.3MB in the beginning and 73.0MB in the end (delta: 17.3MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * TraceAbstraction took 33025.88ms. Allocated memory was 132.1MB in the beginning and 715.1MB in the end (delta: 583.0MB). Free memory was 72.4MB in the beginning and 337.5MB in the end (delta: -265.1MB). Peak memory consumption was 317.5MB. Max. memory is 16.1GB. * Witness Printer took 171.14ms. Allocated memory is still 715.1MB. Free memory was 337.5MB in the beginning and 332.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 120 PlacesBefore, 36 PlacesAfterwards, 112 TransitionsBefore, 26 TransitionsAfterwards, 2402 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 7244 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2908, independent: 2679, independent conditional: 0, independent unconditional: 2679, dependent: 229, dependent conditional: 0, dependent unconditional: 229, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1263, independent: 1215, independent conditional: 0, independent unconditional: 1215, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2908, independent: 1464, independent conditional: 0, independent unconditional: 1464, dependent: 181, dependent conditional: 0, dependent unconditional: 181, unknown: 1263, unknown conditional: 0, unknown unconditional: 1263] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 145 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 589 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 495 mSDsluCounter, 357 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 290 mSDsCounter, 298 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2097 IncrementalHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 298 mSolverCounterUnsat, 67 mSDtfsCounter, 2097 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=6, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 1592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:40:46,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf5e559-b12d-4117-bd2a-fbf62119f6b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE