./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:53:17,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:53:17,619 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:53:17,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:53:17,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:53:17,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:53:17,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:53:17,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:53:17,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:53:17,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:53:17,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:53:17,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:53:17,653 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:53:17,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:53:17,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:53:17,655 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:53:17,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:53:17,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:53:17,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:53:17,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:53:17,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:53:17,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:53:17,659 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:53:17,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:53:17,660 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:53:17,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:53:17,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:53:17,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:53:17,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:17,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:53:17,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:53:17,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:53:17,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:53:17,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:53:17,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:53:17,666 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:53:17,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:53:17,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:53:17,667 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:53:17,667 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_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b [2023-11-06 22:53:17,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:53:18,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:53:18,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:53:18,009 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:53:18,010 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:53:18,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 22:53:21,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:53:21,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:53:21,381 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 22:53:21,397 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/data/5646a3bd1/0b2d83a7e8b745518385cb97df065537/FLAG013e57ad2 [2023-11-06 22:53:21,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/data/5646a3bd1/0b2d83a7e8b745518385cb97df065537 [2023-11-06 22:53:21,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:53:21,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:53:21,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:21,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:53:21,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:53:21,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:21" (1/1) ... [2023-11-06 22:53:21,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138fa8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:21, skipping insertion in model container [2023-11-06 22:53:21,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:21" (1/1) ... [2023-11-06 22:53:21,479 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:53:21,691 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_468db2da-d884-4366-9e99-d64815abf6d2/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-06 22:53:21,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:21,944 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:53:21,961 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_468db2da-d884-4366-9e99-d64815abf6d2/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-06 22:53:22,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:22,067 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:53:22,068 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:53:22,076 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:53:22,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22 WrapperNode [2023-11-06 22:53:22,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:22,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:22,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:53:22,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:53:22,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,135 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-06 22:53:22,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:22,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:53:22,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:53:22,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:53:22,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:53:22,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:53:22,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:53:22,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:53:22,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:22,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:53:22,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:53:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:53:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:53:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:53:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:53:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:53:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:53:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:53:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:53:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:53:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:53:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:53:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:53:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:53:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:53:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:53:22,281 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:53:22,476 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:53:22,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:53:22,651 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:53:22,661 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:53:22,661 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:53:22,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:22 BoogieIcfgContainer [2023-11-06 22:53:22,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:53:22,666 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:53:22,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:53:22,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:53:22,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:53:21" (1/3) ... [2023-11-06 22:53:22,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646548f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:22, skipping insertion in model container [2023-11-06 22:53:22,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (2/3) ... [2023-11-06 22:53:22,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646548f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:22, skipping insertion in model container [2023-11-06 22:53:22,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:22" (3/3) ... [2023-11-06 22:53:22,674 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 22:53:22,682 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:53:22,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:53:22,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:53:22,690 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:53:22,766 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:53:22,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 184 flow [2023-11-06 22:53:22,866 INFO L124 PetriNetUnfolderBase]: 2/83 cut-off events. [2023-11-06 22:53:22,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:22,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-06 22:53:22,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 184 flow [2023-11-06 22:53:22,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-11-06 22:53:22,880 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:53:22,892 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-11-06 22:53:22,897 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-11-06 22:53:22,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-11-06 22:53:22,929 INFO L124 PetriNetUnfolderBase]: 1/68 cut-off events. [2023-11-06 22:53:22,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:22,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-06 22:53:22,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 1008 [2023-11-06 22:53:25,279 INFO L134 LiptonReduction]: Checked pairs total: 1743 [2023-11-06 22:53:25,279 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-11-06 22:53:25,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:53:25,310 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=LoopsAndPotentialCycles, 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;@2137c1e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:53:25,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:53:25,316 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:53:25,316 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-06 22:53:25,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:25,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:25,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:25,318 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)] === [2023-11-06 22:53:25,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 247524755, now seen corresponding path program 1 times [2023-11-06 22:53:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:25,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753688702] [2023-11-06 22:53:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:25,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753688702] [2023-11-06 22:53:25,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753688702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:25,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:25,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569249240] [2023-11-06 22:53:25,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:25,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:26,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:26,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 22:53:26,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:26,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 22:53:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:26,240 INFO L124 PetriNetUnfolderBase]: 354/582 cut-off events. [2023-11-06 22:53:26,240 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-06 22:53:26,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 582 events. 354/582 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2400 event pairs, 129 based on Foata normal form. 27/609 useless extension candidates. Maximal degree in co-relation 1192. Up to 400 conditions per place. [2023-11-06 22:53:26,249 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 23 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-11-06 22:53:26,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 127 flow [2023-11-06 22:53:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-11-06 22:53:26,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5827505827505828 [2023-11-06 22:53:26,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-11-06 22:53:26,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-11-06 22:53:26,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:26,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-11-06 22:53:26,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,283 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 250 transitions. [2023-11-06 22:53:26,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 127 flow [2023-11-06 22:53:26,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:53:26,289 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 67 flow [2023-11-06 22:53:26,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2023-11-06 22:53:26,295 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-11-06 22:53:26,295 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 67 flow [2023-11-06 22:53:26,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:26,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:26,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:53:26,297 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)] === [2023-11-06 22:53:26,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash -916667769, now seen corresponding path program 1 times [2023-11-06 22:53:26,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:26,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421163243] [2023-11-06 22:53:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:26,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:26,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421163243] [2023-11-06 22:53:26,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421163243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:26,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:26,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:53:26,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585319601] [2023-11-06 22:53:26,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:26,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:53:26,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:53:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:53:26,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 22:53:26,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:26,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 22:53:26,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:26,600 INFO L124 PetriNetUnfolderBase]: 333/552 cut-off events. [2023-11-06 22:53:26,601 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-06 22:53:26,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 552 events. 333/552 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2092 event pairs, 81 based on Foata normal form. 9/561 useless extension candidates. Maximal degree in co-relation 1378. Up to 271 conditions per place. [2023-11-06 22:53:26,611 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-11-06 22:53:26,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 154 flow [2023-11-06 22:53:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:53:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:53:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2023-11-06 22:53:26,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5629370629370629 [2023-11-06 22:53:26,619 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 322 transitions. [2023-11-06 22:53:26,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 322 transitions. [2023-11-06 22:53:26,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:26,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 322 transitions. [2023-11-06 22:53:26,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,633 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 67 flow. Second operand 4 states and 322 transitions. [2023-11-06 22:53:26,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 154 flow [2023-11-06 22:53:26,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:53:26,641 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 88 flow [2023-11-06 22:53:26,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-11-06 22:53:26,643 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-06 22:53:26,650 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 88 flow [2023-11-06 22:53:26,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:26,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:26,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:53:26,651 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)] === [2023-11-06 22:53:26,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:26,652 INFO L85 PathProgramCache]: Analyzing trace with hash -916668451, now seen corresponding path program 1 times [2023-11-06 22:53:26,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:26,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629239167] [2023-11-06 22:53:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:26,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:26,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:26,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629239167] [2023-11-06 22:53:26,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629239167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:26,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:26,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:53:26,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637107417] [2023-11-06 22:53:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:26,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:53:26,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:53:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:53:26,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 143 [2023-11-06 22:53:26,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:26,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:26,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 143 [2023-11-06 22:53:26,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:27,076 INFO L124 PetriNetUnfolderBase]: 368/606 cut-off events. [2023-11-06 22:53:27,076 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2023-11-06 22:53:27,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 606 events. 368/606 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2475 event pairs, 31 based on Foata normal form. 12/618 useless extension candidates. Maximal degree in co-relation 1673. Up to 272 conditions per place. [2023-11-06 22:53:27,083 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 36 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2023-11-06 22:53:27,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 53 transitions, 321 flow [2023-11-06 22:53:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:53:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-11-06 22:53:27,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650349650349651 [2023-11-06 22:53:27,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-11-06 22:53:27,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-11-06 22:53:27,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:27,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-11-06 22:53:27,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,092 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,092 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 88 flow. Second operand 5 states and 404 transitions. [2023-11-06 22:53:27,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 53 transitions, 321 flow [2023-11-06 22:53:27,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:27,099 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 223 flow [2023-11-06 22:53:27,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-11-06 22:53:27,101 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-06 22:53:27,105 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 223 flow [2023-11-06 22:53:27,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:27,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:27,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:53:27,107 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)] === [2023-11-06 22:53:27,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1648068008, now seen corresponding path program 1 times [2023-11-06 22:53:27,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:27,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352363116] [2023-11-06 22:53:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:27,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:27,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:27,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352363116] [2023-11-06 22:53:27,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352363116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:27,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:27,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:53:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494968227] [2023-11-06 22:53:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:53:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:53:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:53:27,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 22:53:27,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:27,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 22:53:27,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:27,446 INFO L124 PetriNetUnfolderBase]: 359/591 cut-off events. [2023-11-06 22:53:27,447 INFO L125 PetriNetUnfolderBase]: For 1049/1049 co-relation queries the response was YES. [2023-11-06 22:53:27,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 591 events. 359/591 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2324 event pairs, 79 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 2109. Up to 380 conditions per place. [2023-11-06 22:53:27,454 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 31 selfloop transitions, 15 changer transitions 0/46 dead transitions. [2023-11-06 22:53:27,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 371 flow [2023-11-06 22:53:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:53:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:53:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-11-06 22:53:27,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-11-06 22:53:27,457 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-11-06 22:53:27,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-11-06 22:53:27,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:27,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-11-06 22:53:27,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,462 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 223 flow. Second operand 4 states and 325 transitions. [2023-11-06 22:53:27,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 371 flow [2023-11-06 22:53:27,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:53:27,471 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 283 flow [2023-11-06 22:53:27,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-11-06 22:53:27,474 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-11-06 22:53:27,474 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 283 flow [2023-11-06 22:53:27,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:27,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:27,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:53:27,476 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)] === [2023-11-06 22:53:27,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1647010629, now seen corresponding path program 1 times [2023-11-06 22:53:27,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:27,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771453551] [2023-11-06 22:53:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:27,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771453551] [2023-11-06 22:53:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771453551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:27,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:27,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:27,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578616685] [2023-11-06 22:53:27,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:27,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:27,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:27,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:27,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 143 [2023-11-06 22:53:27,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:27,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 143 [2023-11-06 22:53:27,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:27,791 INFO L124 PetriNetUnfolderBase]: 419/704 cut-off events. [2023-11-06 22:53:27,791 INFO L125 PetriNetUnfolderBase]: For 1866/1866 co-relation queries the response was YES. [2023-11-06 22:53:27,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 704 events. 419/704 cut-off events. For 1866/1866 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3068 event pairs, 74 based on Foata normal form. 27/731 useless extension candidates. Maximal degree in co-relation 2572. Up to 322 conditions per place. [2023-11-06 22:53:27,797 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 27 selfloop transitions, 9 changer transitions 18/54 dead transitions. [2023-11-06 22:53:27,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 496 flow [2023-11-06 22:53:27,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:53:27,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-11-06 22:53:27,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5524475524475524 [2023-11-06 22:53:27,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-11-06 22:53:27,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-11-06 22:53:27,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:27,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-11-06 22:53:27,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,805 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,805 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 283 flow. Second operand 5 states and 395 transitions. [2023-11-06 22:53:27,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 496 flow [2023-11-06 22:53:27,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 460 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:27,814 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 185 flow [2023-11-06 22:53:27,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-11-06 22:53:27,815 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-11-06 22:53:27,815 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 185 flow [2023-11-06 22:53:27,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:27,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:27,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:53:27,817 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)] === [2023-11-06 22:53:27,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash -535347006, now seen corresponding path program 1 times [2023-11-06 22:53:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829905700] [2023-11-06 22:53:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:27,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829905700] [2023-11-06 22:53:27,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829905700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:27,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:27,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:53:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493363493] [2023-11-06 22:53:27,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:27,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:53:27,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:53:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:53:27,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-11-06 22:53:27,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:27,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:27,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-11-06 22:53:27,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:28,039 INFO L124 PetriNetUnfolderBase]: 164/315 cut-off events. [2023-11-06 22:53:28,039 INFO L125 PetriNetUnfolderBase]: For 1710/1751 co-relation queries the response was YES. [2023-11-06 22:53:28,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 315 events. 164/315 cut-off events. For 1710/1751 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1345 event pairs, 40 based on Foata normal form. 24/325 useless extension candidates. Maximal degree in co-relation 1161. Up to 186 conditions per place. [2023-11-06 22:53:28,043 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 28 selfloop transitions, 5 changer transitions 20/57 dead transitions. [2023-11-06 22:53:28,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 536 flow [2023-11-06 22:53:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:53:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2023-11-06 22:53:28,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720279720279721 [2023-11-06 22:53:28,046 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2023-11-06 22:53:28,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2023-11-06 22:53:28,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:28,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2023-11-06 22:53:28,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,051 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,051 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 185 flow. Second operand 5 states and 409 transitions. [2023-11-06 22:53:28,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 536 flow [2023-11-06 22:53:28,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 399 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-11-06 22:53:28,056 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 164 flow [2023-11-06 22:53:28,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-11-06 22:53:28,057 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-11-06 22:53:28,058 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 164 flow [2023-11-06 22:53:28,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:28,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:28,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:53:28,059 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)] === [2023-11-06 22:53:28,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash -234754648, now seen corresponding path program 1 times [2023-11-06 22:53:28,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:28,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121951517] [2023-11-06 22:53:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:28,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:28,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:28,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121951517] [2023-11-06 22:53:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121951517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:28,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:28,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:28,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148938776] [2023-11-06 22:53:28,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:28,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:28,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:28,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:28,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:28,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-11-06 22:53:28,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:28,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-11-06 22:53:28,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:28,341 INFO L124 PetriNetUnfolderBase]: 103/221 cut-off events. [2023-11-06 22:53:28,341 INFO L125 PetriNetUnfolderBase]: For 499/560 co-relation queries the response was YES. [2023-11-06 22:53:28,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 221 events. 103/221 cut-off events. For 499/560 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 907 event pairs, 12 based on Foata normal form. 36/249 useless extension candidates. Maximal degree in co-relation 879. Up to 122 conditions per place. [2023-11-06 22:53:28,343 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 38 selfloop transitions, 11 changer transitions 14/67 dead transitions. [2023-11-06 22:53:28,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 531 flow [2023-11-06 22:53:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:53:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:53:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 567 transitions. [2023-11-06 22:53:28,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664335664335665 [2023-11-06 22:53:28,347 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 567 transitions. [2023-11-06 22:53:28,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 567 transitions. [2023-11-06 22:53:28,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:28,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 567 transitions. [2023-11-06 22:53:28,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,353 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,353 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 164 flow. Second operand 7 states and 567 transitions. [2023-11-06 22:53:28,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 531 flow [2023-11-06 22:53:28,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 67 transitions, 525 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:28,357 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 240 flow [2023-11-06 22:53:28,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-11-06 22:53:28,358 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-11-06 22:53:28,358 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 240 flow [2023-11-06 22:53:28,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:28,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:28,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:53:28,359 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)] === [2023-11-06 22:53:28,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:28,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1617474478, now seen corresponding path program 1 times [2023-11-06 22:53:28,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:28,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495976298] [2023-11-06 22:53:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:28,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:28,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:28,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495976298] [2023-11-06 22:53:28,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495976298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:28,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:28,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:28,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427741420] [2023-11-06 22:53:28,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:28,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:53:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:28,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:53:28,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:53:28,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 143 [2023-11-06 22:53:28,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:28,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 143 [2023-11-06 22:53:28,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:28,636 INFO L124 PetriNetUnfolderBase]: 168/342 cut-off events. [2023-11-06 22:53:28,637 INFO L125 PetriNetUnfolderBase]: For 914/914 co-relation queries the response was YES. [2023-11-06 22:53:28,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 342 events. 168/342 cut-off events. For 914/914 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1435 event pairs, 17 based on Foata normal form. 5/347 useless extension candidates. Maximal degree in co-relation 1530. Up to 183 conditions per place. [2023-11-06 22:53:28,639 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 33 selfloop transitions, 11 changer transitions 15/59 dead transitions. [2023-11-06 22:53:28,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 520 flow [2023-11-06 22:53:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:53:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-11-06 22:53:28,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551048951048951 [2023-11-06 22:53:28,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-11-06 22:53:28,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-11-06 22:53:28,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:28,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-11-06 22:53:28,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,647 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 240 flow. Second operand 5 states and 394 transitions. [2023-11-06 22:53:28,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 520 flow [2023-11-06 22:53:28,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 462 flow, removed 23 selfloop flow, removed 1 redundant places. [2023-11-06 22:53:28,654 INFO L231 Difference]: Finished difference. Result has 52 places, 28 transitions, 218 flow [2023-11-06 22:53:28,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=28} [2023-11-06 22:53:28,655 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-11-06 22:53:28,655 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 28 transitions, 218 flow [2023-11-06 22:53:28,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:28,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:28,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:53:28,656 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)] === [2023-11-06 22:53:28,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -58535430, now seen corresponding path program 2 times [2023-11-06 22:53:28,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:28,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328146933] [2023-11-06 22:53:28,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:28,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:28,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:28,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328146933] [2023-11-06 22:53:28,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328146933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:28,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:28,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:53:28,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599529259] [2023-11-06 22:53:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:28,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:53:28,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:28,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:53:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:53:28,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-11-06 22:53:28,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 28 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:28,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-11-06 22:53:28,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:28,908 INFO L124 PetriNetUnfolderBase]: 71/167 cut-off events. [2023-11-06 22:53:28,908 INFO L125 PetriNetUnfolderBase]: For 475/509 co-relation queries the response was YES. [2023-11-06 22:53:28,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 167 events. 71/167 cut-off events. For 475/509 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 654 event pairs, 10 based on Foata normal form. 25/187 useless extension candidates. Maximal degree in co-relation 741. Up to 59 conditions per place. [2023-11-06 22:53:28,909 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-11-06 22:53:28,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 450 flow [2023-11-06 22:53:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:53:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:53:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 553 transitions. [2023-11-06 22:53:28,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5524475524475524 [2023-11-06 22:53:28,913 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 553 transitions. [2023-11-06 22:53:28,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 553 transitions. [2023-11-06 22:53:28,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:28,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 553 transitions. [2023-11-06 22:53:28,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,919 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,919 INFO L175 Difference]: Start difference. First operand has 52 places, 28 transitions, 218 flow. Second operand 7 states and 553 transitions. [2023-11-06 22:53:28,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 450 flow [2023-11-06 22:53:28,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 402 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-06 22:53:28,922 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-11-06 22:53:28,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-11-06 22:53:28,924 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-11-06 22:53:28,924 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-11-06 22:53:28,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:28,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 22:53:28,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 22:53:28,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 22:53:28,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 22:53:28,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:53:28,930 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:28,935 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:53:28,935 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:53:28,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:53:28 BasicIcfg [2023-11-06 22:53:28,941 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:53:28,942 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:53:28,942 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:53:28,942 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:53:28,943 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:22" (3/4) ... [2023-11-06 22:53:28,945 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:53:28,949 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 22:53:28,949 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 22:53:28,950 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 22:53:28,957 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 22:53:28,957 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:53:28,957 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:53:28,957 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:53:29,021 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:53:29,021 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:53:29,021 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:53:29,022 INFO L158 Benchmark]: Toolchain (without parser) took 7602.58ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 117.2MB in the beginning and 133.0MB in the end (delta: -15.8MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2023-11-06 22:53:29,022 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:53:29,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.34ms. Allocated memory is still 153.1MB. Free memory was 116.6MB in the beginning and 96.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 22:53:29,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.85ms. Allocated memory is still 153.1MB. Free memory was 96.2MB in the beginning and 94.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:53:29,023 INFO L158 Benchmark]: Boogie Preprocessor took 46.12ms. Allocated memory is still 153.1MB. Free memory was 94.1MB in the beginning and 92.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:53:29,023 INFO L158 Benchmark]: RCFGBuilder took 479.04ms. Allocated memory is still 153.1MB. Free memory was 92.9MB in the beginning and 114.2MB in the end (delta: -21.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:53:29,024 INFO L158 Benchmark]: TraceAbstraction took 6275.17ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 114.2MB in the beginning and 136.1MB in the end (delta: -21.9MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-11-06 22:53:29,024 INFO L158 Benchmark]: Witness Printer took 79.16ms. Allocated memory is still 184.5MB. Free memory was 136.1MB in the beginning and 133.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:53:29,026 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 656.34ms. Allocated memory is still 153.1MB. Free memory was 116.6MB in the beginning and 96.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.85ms. Allocated memory is still 153.1MB. Free memory was 96.2MB in the beginning and 94.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.12ms. Allocated memory is still 153.1MB. Free memory was 94.1MB in the beginning and 92.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 479.04ms. Allocated memory is still 153.1MB. Free memory was 92.9MB in the beginning and 114.2MB in the end (delta: -21.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6275.17ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 114.2MB in the beginning and 136.1MB in the end (delta: -21.9MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Witness Printer took 79.16ms. Allocated memory is still 184.5MB. Free memory was 136.1MB in the beginning and 133.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 77 PlacesBefore, 26 PlacesAfterwards, 68 TransitionsBefore, 17 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 1743 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1019, independent: 950, independent conditional: 0, independent unconditional: 950, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 573, independent: 547, independent conditional: 0, independent unconditional: 547, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1019, independent: 403, independent conditional: 0, independent unconditional: 403, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 573, unknown conditional: 0, unknown unconditional: 573] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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, 108 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: 6.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 292 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 548 IncrementalHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 34 mSDtfsCounter, 548 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=283occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 1.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2023-11-06 22:53:29,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468db2da-d884-4366-9e99-d64815abf6d2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE