./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.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_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/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_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/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_45414d09-8b4c-4d2d-8efe-7f797996e012/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 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:39,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:39,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:55:39,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:39,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:39,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:39,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:39,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:39,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:39,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:39,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:39,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:39,372 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:39,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:39,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:39,374 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:39,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:39,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:39,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:39,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:39,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:39,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:39,380 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:39,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:39,381 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:39,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:39,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:39,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:39,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:39,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:39,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:39,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:39,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:39,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:39,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:39,385 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:39,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:39,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:39,386 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:39,386 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_45414d09-8b4c-4d2d-8efe-7f797996e012/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 [2023-11-19 07:55:39,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:39,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:39,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:39,718 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:39,719 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:39,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-19 07:55:42,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:43,065 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:43,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-19 07:55:43,085 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/data/26619f2b2/531a913b15bd4d929ae14143dcd97af9/FLAG23a7ccc58 [2023-11-19 07:55:43,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/data/26619f2b2/531a913b15bd4d929ae14143dcd97af9 [2023-11-19 07:55:43,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:43,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:43,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:43,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:43,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:43,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15395377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43, skipping insertion in model container [2023-11-19 07:55:43,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:43,374 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_45414d09-8b4c-4d2d-8efe-7f797996e012/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-19 07:55:43,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:43,646 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:43,660 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_45414d09-8b4c-4d2d-8efe-7f797996e012/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-19 07:55:43,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:43,733 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:55:43,733 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:55:43,742 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:43,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43 WrapperNode [2023-11-19 07:55:43,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:43,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:43,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:43,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:43,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,791 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-19 07:55:43,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:43,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:43,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:43,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:43,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:43,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:43,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:43,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:43,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (1/1) ... [2023-11-19 07:55:43,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:43,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:43,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:43,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:55:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:55:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:55:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:55:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:55:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:55:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:55:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:55:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:55:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:55:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:55:43,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:43,903 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 07:55:44,051 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:44,053 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:44,213 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:44,222 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:44,223 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:55:44,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:44 BoogieIcfgContainer [2023-11-19 07:55:44,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:44,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:44,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:44,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:44,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:43" (1/3) ... [2023-11-19 07:55:44,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3943b463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:44, skipping insertion in model container [2023-11-19 07:55:44,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:43" (2/3) ... [2023-11-19 07:55:44,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3943b463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:44, skipping insertion in model container [2023-11-19 07:55:44,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:44" (3/3) ... [2023-11-19 07:55:44,236 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-19 07:55:44,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:55:44,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:44,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:55:44,258 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:55:44,338 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:55:44,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 196 flow [2023-11-19 07:55:44,436 INFO L124 PetriNetUnfolderBase]: 2/89 cut-off events. [2023-11-19 07:55:44,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:44,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-19 07:55:44,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 196 flow [2023-11-19 07:55:44,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2023-11-19 07:55:44,451 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:55:44,462 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 74 transitions, 157 flow [2023-11-19 07:55:44,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 74 transitions, 157 flow [2023-11-19 07:55:44,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 74 transitions, 157 flow [2023-11-19 07:55:44,493 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-11-19 07:55:44,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:44,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-11-19 07:55:44,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-11-19 07:55:46,782 INFO L134 LiptonReduction]: Checked pairs total: 2221 [2023-11-19 07:55:46,782 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-11-19 07:55:46,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:46,813 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;@10abb19a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:46,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:55:46,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:55:46,830 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-19 07:55:46,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:46,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:46,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:46,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:46,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 209565276, now seen corresponding path program 1 times [2023-11-19 07:55:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:46,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980516785] [2023-11-19 07:55:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:47,459 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 07:55:47,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:47,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980516785] [2023-11-19 07:55:47,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980516785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:47,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:47,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:55:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114192420] [2023-11-19 07:55:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:47,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:47,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:47,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 153 [2023-11-19 07:55:47,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 07:55:47,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:47,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 153 [2023-11-19 07:55:47,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:47,789 INFO L124 PetriNetUnfolderBase]: 574/920 cut-off events. [2023-11-19 07:55:47,790 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:55:47,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 920 events. 574/920 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4016 event pairs, 208 based on Foata normal form. 41/961 useless extension candidates. Maximal degree in co-relation 1886. Up to 559 conditions per place. [2023-11-19 07:55:47,802 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-19 07:55:47,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-19 07:55:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-11-19 07:55:47,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729847494553377 [2023-11-19 07:55:47,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-11-19 07:55:47,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-11-19 07:55:47,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:47,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-11-19 07:55:47,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 07:55:47,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 07:55:47,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 07:55:47,850 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 263 transitions. [2023-11-19 07:55:47,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-19 07:55:47,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:55:47,856 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-11-19 07:55:47,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-19 07:55:47,862 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-19 07:55:47,862 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-11-19 07:55:47,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 07:55:47,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:47,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:47,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:55:47,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:47,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2093411813, now seen corresponding path program 1 times [2023-11-19 07:55:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:47,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102435348] [2023-11-19 07:55:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:48,156 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 07:55:48,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:48,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102435348] [2023-11-19 07:55:48,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102435348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:48,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:48,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:48,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557261943] [2023-11-19 07:55:48,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:48,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:48,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:48,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:48,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 153 [2023-11-19 07:55:48,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 07:55:48,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:48,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 153 [2023-11-19 07:55:48,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:48,377 INFO L124 PetriNetUnfolderBase]: 538/865 cut-off events. [2023-11-19 07:55:48,377 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2023-11-19 07:55:48,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2357 conditions, 865 events. 538/865 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3566 event pairs, 122 based on Foata normal form. 10/875 useless extension candidates. Maximal degree in co-relation 2345. Up to 424 conditions per place. [2023-11-19 07:55:48,386 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-11-19 07:55:48,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 218 flow [2023-11-19 07:55:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:55:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:55:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-11-19 07:55:48,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2023-11-19 07:55:48,391 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-11-19 07:55:48,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-11-19 07:55:48,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:48,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-11-19 07:55:48,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 07:55:48,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 07:55:48,404 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 07:55:48,404 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 342 transitions. [2023-11-19 07:55:48,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 218 flow [2023-11-19 07:55:48,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:55:48,412 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 128 flow [2023-11-19 07:55:48,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-11-19 07:55:48,413 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-19 07:55:48,418 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 128 flow [2023-11-19 07:55:48,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 07:55:48,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:48,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:48,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:55:48,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:48,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2093411751, now seen corresponding path program 1 times [2023-11-19 07:55:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:48,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006384541] [2023-11-19 07:55:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:48,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:48,622 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 07:55:48,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:48,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006384541] [2023-11-19 07:55:48,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006384541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:48,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:48,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:48,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449893627] [2023-11-19 07:55:48,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:48,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:48,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:48,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:48,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 153 [2023-11-19 07:55:48,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 07:55:48,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:48,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 153 [2023-11-19 07:55:48,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:48,805 INFO L124 PetriNetUnfolderBase]: 504/816 cut-off events. [2023-11-19 07:55:48,805 INFO L125 PetriNetUnfolderBase]: For 752/752 co-relation queries the response was YES. [2023-11-19 07:55:48,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 816 events. 504/816 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3494 event pairs, 121 based on Foata normal form. 12/828 useless extension candidates. Maximal degree in co-relation 2408. Up to 406 conditions per place. [2023-11-19 07:55:48,817 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 39 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2023-11-19 07:55:48,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 316 flow [2023-11-19 07:55:48,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:55:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:55:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2023-11-19 07:55:48,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718954248366013 [2023-11-19 07:55:48,820 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 350 transitions. [2023-11-19 07:55:48,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 350 transitions. [2023-11-19 07:55:48,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:48,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 350 transitions. [2023-11-19 07:55:48,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 07:55:48,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 07:55:48,825 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 07:55:48,826 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 128 flow. Second operand 4 states and 350 transitions. [2023-11-19 07:55:48,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 316 flow [2023-11-19 07:55:48,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:48,832 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 208 flow [2023-11-19 07:55:48,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-11-19 07:55:48,834 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-19 07:55:48,837 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 208 flow [2023-11-19 07:55:48,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 07:55:48,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:48,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:48,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:55:48,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:48,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash -471257478, now seen corresponding path program 1 times [2023-11-19 07:55:48,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:48,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515912239] [2023-11-19 07:55:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:49,014 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 07:55:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515912239] [2023-11-19 07:55:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515912239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:49,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:49,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:49,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767031249] [2023-11-19 07:55:49,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:49,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:49,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:49,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:49,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:49,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 153 [2023-11-19 07:55:49,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 07:55:49,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:49,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 153 [2023-11-19 07:55:49,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:49,186 INFO L124 PetriNetUnfolderBase]: 471/765 cut-off events. [2023-11-19 07:55:49,186 INFO L125 PetriNetUnfolderBase]: For 1409/1409 co-relation queries the response was YES. [2023-11-19 07:55:49,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 765 events. 471/765 cut-off events. For 1409/1409 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3080 event pairs, 98 based on Foata normal form. 9/774 useless extension candidates. Maximal degree in co-relation 2631. Up to 394 conditions per place. [2023-11-19 07:55:49,195 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 35 selfloop transitions, 15 changer transitions 0/50 dead transitions. [2023-11-19 07:55:49,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 405 flow [2023-11-19 07:55:49,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:55:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:55:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-11-19 07:55:49,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565359477124183 [2023-11-19 07:55:49,198 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-11-19 07:55:49,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-11-19 07:55:49,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:49,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-11-19 07:55:49,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 07:55:49,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 07:55:49,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 07:55:49,203 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 208 flow. Second operand 4 states and 346 transitions. [2023-11-19 07:55:49,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 405 flow [2023-11-19 07:55:49,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:49,212 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 327 flow [2023-11-19 07:55:49,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-19 07:55:49,215 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-19 07:55:49,215 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 327 flow [2023-11-19 07:55:49,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 07:55:49,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:49,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:49,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:55:49,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:49,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1061675448, now seen corresponding path program 1 times [2023-11-19 07:55:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996467878] [2023-11-19 07:55:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:49,358 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 07:55:49,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996467878] [2023-11-19 07:55:49,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996467878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:49,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:49,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624946583] [2023-11-19 07:55:49,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:49,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 153 [2023-11-19 07:55:49,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 07:55:49,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:49,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 153 [2023-11-19 07:55:49,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:49,526 INFO L124 PetriNetUnfolderBase]: 443/722 cut-off events. [2023-11-19 07:55:49,526 INFO L125 PetriNetUnfolderBase]: For 2238/2238 co-relation queries the response was YES. [2023-11-19 07:55:49,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2837 conditions, 722 events. 443/722 cut-off events. For 2238/2238 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2895 event pairs, 240 based on Foata normal form. 9/731 useless extension candidates. Maximal degree in co-relation 2814. Up to 538 conditions per place. [2023-11-19 07:55:49,535 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 37 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-11-19 07:55:49,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 492 flow [2023-11-19 07:55:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-19 07:55:49,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2023-11-19 07:55:49,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-19 07:55:49,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-19 07:55:49,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:49,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-19 07:55:49,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 07:55:49,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 07:55:49,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 07:55:49,542 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 327 flow. Second operand 3 states and 276 transitions. [2023-11-19 07:55:49,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 492 flow [2023-11-19 07:55:49,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:49,552 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 351 flow [2023-11-19 07:55:49,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-11-19 07:55:49,555 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-19 07:55:49,555 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 351 flow [2023-11-19 07:55:49,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 07:55:49,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:49,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:49,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:55:49,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:49,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -993944881, now seen corresponding path program 1 times [2023-11-19 07:55:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286525301] [2023-11-19 07:55:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:49,726 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 07:55:49,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286525301] [2023-11-19 07:55:49,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286525301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:49,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:49,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:49,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435191668] [2023-11-19 07:55:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:49,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:49,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:49,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 153 [2023-11-19 07:55:49,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 07:55:49,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:49,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 153 [2023-11-19 07:55:49,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:49,894 INFO L124 PetriNetUnfolderBase]: 464/791 cut-off events. [2023-11-19 07:55:49,894 INFO L125 PetriNetUnfolderBase]: For 3259/3279 co-relation queries the response was YES. [2023-11-19 07:55:49,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 791 events. 464/791 cut-off events. For 3259/3279 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3516 event pairs, 130 based on Foata normal form. 30/812 useless extension candidates. Maximal degree in co-relation 3101. Up to 300 conditions per place. [2023-11-19 07:55:49,901 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 26 selfloop transitions, 4 changer transitions 21/55 dead transitions. [2023-11-19 07:55:49,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 627 flow [2023-11-19 07:55:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:55:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:55:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2023-11-19 07:55:49,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849673202614379 [2023-11-19 07:55:49,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2023-11-19 07:55:49,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2023-11-19 07:55:49,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:49,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2023-11-19 07:55:49,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 07:55:49,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 07:55:49,909 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 07:55:49,909 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 351 flow. Second operand 4 states and 358 transitions. [2023-11-19 07:55:49,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 627 flow [2023-11-19 07:55:49,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 599 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:55:49,919 INFO L231 Difference]: Finished difference. Result has 47 places, 27 transitions, 243 flow [2023-11-19 07:55:49,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2023-11-19 07:55:49,920 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-19 07:55:49,921 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 243 flow [2023-11-19 07:55:49,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 07:55:49,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:49,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:49,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:55:49,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:49,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1230779435, now seen corresponding path program 1 times [2023-11-19 07:55:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:49,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763093856] [2023-11-19 07:55:49,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:49,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,055 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 07:55:50,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763093856] [2023-11-19 07:55:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763093856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:50,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:50,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444759810] [2023-11-19 07:55:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:50,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:50,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:50,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 153 [2023-11-19 07:55:50,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 07:55:50,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:50,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 153 [2023-11-19 07:55:50,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:50,188 INFO L124 PetriNetUnfolderBase]: 155/310 cut-off events. [2023-11-19 07:55:50,189 INFO L125 PetriNetUnfolderBase]: For 1841/1847 co-relation queries the response was YES. [2023-11-19 07:55:50,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 310 events. 155/310 cut-off events. For 1841/1847 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1328 event pairs, 28 based on Foata normal form. 15/324 useless extension candidates. Maximal degree in co-relation 1231. Up to 173 conditions per place. [2023-11-19 07:55:50,193 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 46 selfloop transitions, 6 changer transitions 15/71 dead transitions. [2023-11-19 07:55:50,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 766 flow [2023-11-19 07:55:50,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:55:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:55:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2023-11-19 07:55:50,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816993464052288 [2023-11-19 07:55:50,196 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2023-11-19 07:55:50,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2023-11-19 07:55:50,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:50,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2023-11-19 07:55:50,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 07:55:50,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 07:55:50,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 07:55:50,202 INFO L175 Difference]: Start difference. First operand has 47 places, 27 transitions, 243 flow. Second operand 5 states and 445 transitions. [2023-11-19 07:55:50,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 766 flow [2023-11-19 07:55:50,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 680 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-19 07:55:50,208 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 255 flow [2023-11-19 07:55:50,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2023-11-19 07:55:50,209 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-19 07:55:50,210 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 255 flow [2023-11-19 07:55:50,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 07:55:50,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:50,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:50,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:55:50,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:50,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -76558558, now seen corresponding path program 1 times [2023-11-19 07:55:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:50,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089217711] [2023-11-19 07:55:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:50,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,329 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 07:55:50,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089217711] [2023-11-19 07:55:50,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089217711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:50,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:50,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:50,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770311731] [2023-11-19 07:55:50,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:50,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:50,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 153 [2023-11-19 07:55:50,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 07:55:50,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:50,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 153 [2023-11-19 07:55:50,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:50,472 INFO L124 PetriNetUnfolderBase]: 125/271 cut-off events. [2023-11-19 07:55:50,472 INFO L125 PetriNetUnfolderBase]: For 1441/1454 co-relation queries the response was YES. [2023-11-19 07:55:50,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 271 events. 125/271 cut-off events. For 1441/1454 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1185 event pairs, 6 based on Foata normal form. 18/288 useless extension candidates. Maximal degree in co-relation 1238. Up to 119 conditions per place. [2023-11-19 07:55:50,476 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 49 selfloop transitions, 10 changer transitions 19/82 dead transitions. [2023-11-19 07:55:50,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 840 flow [2023-11-19 07:55:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:55:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2023-11-19 07:55:50,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751633986928104 [2023-11-19 07:55:50,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 616 transitions. [2023-11-19 07:55:50,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 616 transitions. [2023-11-19 07:55:50,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:50,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 616 transitions. [2023-11-19 07:55:50,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.0) internal successors, (616), 7 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 07:55:50,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 07:55:50,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states 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 07:55:50,486 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 255 flow. Second operand 7 states and 616 transitions. [2023-11-19 07:55:50,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 840 flow [2023-11-19 07:55:50,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 840 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:55:50,493 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 322 flow [2023-11-19 07:55:50,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2023-11-19 07:55:50,494 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 29 predicate places. [2023-11-19 07:55:50,494 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 322 flow [2023-11-19 07:55:50,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 07:55:50,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:50,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:50,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:55:50,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:50,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1921642293, now seen corresponding path program 1 times [2023-11-19 07:55:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:50,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106820663] [2023-11-19 07:55:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,618 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 07:55:50,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:50,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106820663] [2023-11-19 07:55:50,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106820663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:50,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:50,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409312475] [2023-11-19 07:55:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:50,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:55:50,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:50,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:55:50,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:50,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 153 [2023-11-19 07:55:50,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states 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 07:55:50,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:50,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 153 [2023-11-19 07:55:50,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:50,780 INFO L124 PetriNetUnfolderBase]: 99/221 cut-off events. [2023-11-19 07:55:50,780 INFO L125 PetriNetUnfolderBase]: For 1480/1498 co-relation queries the response was YES. [2023-11-19 07:55:50,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 221 events. 99/221 cut-off events. For 1480/1498 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 937 event pairs, 3 based on Foata normal form. 16/236 useless extension candidates. Maximal degree in co-relation 1179. Up to 90 conditions per place. [2023-11-19 07:55:50,783 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 27 selfloop transitions, 10 changer transitions 40/80 dead transitions. [2023-11-19 07:55:50,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 885 flow [2023-11-19 07:55:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:55:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:55:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 774 transitions. [2023-11-19 07:55:50,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620915032679739 [2023-11-19 07:55:50,787 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 774 transitions. [2023-11-19 07:55:50,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 774 transitions. [2023-11-19 07:55:50,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:50,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 774 transitions. [2023-11-19 07:55:50,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 07:55:50,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states 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 07:55:50,795 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states 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 07:55:50,795 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 322 flow. Second operand 9 states and 774 transitions. [2023-11-19 07:55:50,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 885 flow [2023-11-19 07:55:50,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 857 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-19 07:55:50,817 INFO L231 Difference]: Finished difference. Result has 61 places, 31 transitions, 297 flow [2023-11-19 07:55:50,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=61, PETRI_TRANSITIONS=31} [2023-11-19 07:55:50,818 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 34 predicate places. [2023-11-19 07:55:50,818 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 31 transitions, 297 flow [2023-11-19 07:55:50,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states 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 07:55:50,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:50,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:50,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:55:50,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:50,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash 172964417, now seen corresponding path program 1 times [2023-11-19 07:55:50,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:50,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686488024] [2023-11-19 07:55:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:50,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:50,966 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 07:55:50,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:50,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686488024] [2023-11-19 07:55:50,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686488024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:50,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:50,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:50,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658276746] [2023-11-19 07:55:50,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:50,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:50,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:50,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:50,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 153 [2023-11-19 07:55:50,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 31 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 07:55:50,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:50,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 153 [2023-11-19 07:55:50,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:51,070 INFO L124 PetriNetUnfolderBase]: 58/140 cut-off events. [2023-11-19 07:55:51,071 INFO L125 PetriNetUnfolderBase]: For 652/652 co-relation queries the response was YES. [2023-11-19 07:55:51,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 140 events. 58/140 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 469 event pairs, 8 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 809. Up to 92 conditions per place. [2023-11-19 07:55:51,073 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 24 selfloop transitions, 5 changer transitions 28/57 dead transitions. [2023-11-19 07:55:51,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 625 flow [2023-11-19 07:55:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:55:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:55:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-11-19 07:55:51,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550326797385621 [2023-11-19 07:55:51,075 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-11-19 07:55:51,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-11-19 07:55:51,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:51,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-11-19 07:55:51,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 07:55:51,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 07:55:51,080 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 07:55:51,081 INFO L175 Difference]: Start difference. First operand has 61 places, 31 transitions, 297 flow. Second operand 5 states and 421 transitions. [2023-11-19 07:55:51,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 625 flow [2023-11-19 07:55:51,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 502 flow, removed 29 selfloop flow, removed 11 redundant places. [2023-11-19 07:55:51,087 INFO L231 Difference]: Finished difference. Result has 48 places, 23 transitions, 156 flow [2023-11-19 07:55:51,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=48, PETRI_TRANSITIONS=23} [2023-11-19 07:55:51,088 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-11-19 07:55:51,088 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 23 transitions, 156 flow [2023-11-19 07:55:51,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 07:55:51,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:51,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:51,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:55:51,089 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:55:51,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1518454999, now seen corresponding path program 2 times [2023-11-19 07:55:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904327371] [2023-11-19 07:55:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:51,207 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 07:55:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904327371] [2023-11-19 07:55:51,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904327371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:51,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:51,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034276219] [2023-11-19 07:55:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:51,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:51,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:51,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:51,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 153 [2023-11-19 07:55:51,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 23 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 07:55:51,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:51,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 153 [2023-11-19 07:55:51,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:51,268 INFO L124 PetriNetUnfolderBase]: 13/40 cut-off events. [2023-11-19 07:55:51,268 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-19 07:55:51,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 40 events. 13/40 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 185. Up to 17 conditions per place. [2023-11-19 07:55:51,269 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-11-19 07:55:51,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 29 transitions, 244 flow [2023-11-19 07:55:51,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:55:51,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:55:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 427 transitions. [2023-11-19 07:55:51,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581699346405229 [2023-11-19 07:55:51,272 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 427 transitions. [2023-11-19 07:55:51,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 427 transitions. [2023-11-19 07:55:51,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:51,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 427 transitions. [2023-11-19 07:55:51,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 07:55:51,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 07:55:51,277 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states 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 07:55:51,277 INFO L175 Difference]: Start difference. First operand has 48 places, 23 transitions, 156 flow. Second operand 5 states and 427 transitions. [2023-11-19 07:55:51,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 29 transitions, 244 flow [2023-11-19 07:55:51,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 184 flow, removed 3 selfloop flow, removed 17 redundant places. [2023-11-19 07:55:51,279 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-11-19 07:55:51,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-11-19 07:55:51,280 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-19 07:55:51,280 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-11-19 07:55:51,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 07:55:51,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 07:55:51,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-19 07:55:51,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 07:55:51,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-19 07:55:51,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:55:51,285 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:51,288 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:55:51,289 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:55:51,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:55:51 BasicIcfg [2023-11-19 07:55:51,292 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:55:51,293 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:55:51,293 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:55:51,293 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:55:51,294 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:44" (3/4) ... [2023-11-19 07:55:51,296 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:55:51,301 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 07:55:51,301 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 07:55:51,301 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-19 07:55:51,306 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 07:55:51,306 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:55:51,306 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:55:51,306 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:55:51,388 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:55:51,389 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:55:51,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:55:51,390 INFO L158 Benchmark]: Toolchain (without parser) took 8272.99ms. Allocated memory was 136.3MB in the beginning and 209.7MB in the end (delta: 73.4MB). Free memory was 99.8MB in the beginning and 85.0MB in the end (delta: 14.8MB). Peak memory consumption was 90.0MB. Max. memory is 16.1GB. [2023-11-19 07:55:51,390 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 100.7MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:55:51,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 624.09ms. Allocated memory is still 136.3MB. Free memory was 99.8MB in the beginning and 79.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:55:51,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.13ms. Allocated memory is still 136.3MB. Free memory was 79.2MB in the beginning and 77.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:55:51,391 INFO L158 Benchmark]: Boogie Preprocessor took 30.38ms. Allocated memory is still 136.3MB. Free memory was 77.1MB in the beginning and 75.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:55:51,392 INFO L158 Benchmark]: RCFGBuilder took 403.31ms. Allocated memory is still 136.3MB. Free memory was 75.6MB in the beginning and 100.5MB in the end (delta: -24.9MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2023-11-19 07:55:51,392 INFO L158 Benchmark]: TraceAbstraction took 7063.65ms. Allocated memory was 136.3MB in the beginning and 209.7MB in the end (delta: 73.4MB). Free memory was 99.9MB in the beginning and 89.2MB in the end (delta: 10.7MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. [2023-11-19 07:55:51,393 INFO L158 Benchmark]: Witness Printer took 96.23ms. Allocated memory is still 209.7MB. Free memory was 89.2MB in the beginning and 85.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:55:51,395 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 100.7MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 624.09ms. Allocated memory is still 136.3MB. Free memory was 99.8MB in the beginning and 79.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.13ms. Allocated memory is still 136.3MB. Free memory was 79.2MB in the beginning and 77.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.38ms. Allocated memory is still 136.3MB. Free memory was 77.1MB in the beginning and 75.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 403.31ms. Allocated memory is still 136.3MB. Free memory was 75.6MB in the beginning and 100.5MB in the end (delta: -24.9MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * TraceAbstraction took 7063.65ms. Allocated memory was 136.3MB in the beginning and 209.7MB in the end (delta: 73.4MB). Free memory was 99.9MB in the beginning and 89.2MB in the end (delta: 10.7MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. * Witness Printer took 96.23ms. Allocated memory is still 209.7MB. Free memory was 89.2MB in the beginning and 85.0MB in the end (delta: 4.2MB). 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: 2.3s, 83 PlacesBefore, 27 PlacesAfterwards, 74 TransitionsBefore, 17 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2221 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1297, independent: 1221, independent conditional: 0, independent unconditional: 1221, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 711, independent: 679, independent conditional: 0, independent unconditional: 679, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1297, independent: 542, independent conditional: 0, independent unconditional: 542, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 711, unknown conditional: 0, unknown unconditional: 711] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 118 locations, 4 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: 6.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 358 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 247 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 683 IncrementalHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 66 mSDtfsCounter, 683 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=5, InterpolantAutomatonStates: 53, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:55:51,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45414d09-8b4c-4d2d-8efe-7f797996e012/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