./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:21:57,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:21:57,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:21:57,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:21:57,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:21:57,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:21:57,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:21:57,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:21:57,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:21:57,626 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:21:57,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:21:57,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:21:57,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:21:57,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:21:57,628 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:21:57,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:21:57,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:21:57,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:21:57,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:21:57,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:21:57,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:21:57,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:21:57,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:21:57,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:21:57,633 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:21:57,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:21:57,633 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:21:57,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:21:57,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:21:57,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:21:57,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:21:57,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:21:57,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:21:57,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:21:57,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:21:57,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:21:57,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:21:57,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:21:57,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:21:57,637 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:21:57,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:21:57,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:21:57,638 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_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2023-11-29 01:21:57,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:21:57,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:21:57,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:21:57,873 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:21:57,873 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:21:57,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-29 01:22:00,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:22:00,829 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:22:00,829 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-29 01:22:00,844 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/data/c8f1e1931/eb0715b501c648a1969034b705dc6d61/FLAG03bc198a8 [2023-11-29 01:22:00,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/data/c8f1e1931/eb0715b501c648a1969034b705dc6d61 [2023-11-29 01:22:00,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:22:00,861 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:22:00,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:22:00,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:22:00,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:22:00,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:22:00" (1/1) ... [2023-11-29 01:22:00,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c34f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:00, skipping insertion in model container [2023-11-29 01:22:00,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:22:00" (1/1) ... [2023-11-29 01:22:00,910 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:22:01,042 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_5ff1dc38-0d77-4a3a-b68e-eda395b84245/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-29 01:22:01,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:22:01,183 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:22:01,192 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_5ff1dc38-0d77-4a3a-b68e-eda395b84245/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-29 01:22:01,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:22:01,249 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:22:01,249 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:22:01,255 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:22:01,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01 WrapperNode [2023-11-29 01:22:01,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:22:01,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:22:01,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:22:01,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:22:01,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,294 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-29 01:22:01,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:22:01,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:22:01,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:22:01,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:22:01,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,322 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 01:22:01,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:22:01,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:22:01,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:22:01,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:22:01,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (1/1) ... [2023-11-29 01:22:01,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:22:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:01,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:22:01,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:22:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:22:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:22:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:22:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:22:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:22:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:22:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:22:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:22:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 01:22:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 01:22:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 01:22:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 01:22:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-29 01:22:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-29 01:22:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:22:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:22:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:22:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:22:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:22:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:22:01,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:22:01,401 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:22:01,530 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:22:01,533 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:22:01,674 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:22:01,775 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:22:01,788 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:22:01,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:22:01 BoogieIcfgContainer [2023-11-29 01:22:01,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:22:01,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:22:01,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:22:01,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:22:01,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:22:00" (1/3) ... [2023-11-29 01:22:01,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb2d9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:22:01, skipping insertion in model container [2023-11-29 01:22:01,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:01" (2/3) ... [2023-11-29 01:22:01,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb2d9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:22:01, skipping insertion in model container [2023-11-29 01:22:01,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:22:01" (3/3) ... [2023-11-29 01:22:01,799 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-29 01:22:01,807 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:22:01,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:22:01,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:22:01,826 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:22:01,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:22:01,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2023-11-29 01:22:01,921 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-11-29 01:22:01,921 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:22:01,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-29 01:22:01,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2023-11-29 01:22:01,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2023-11-29 01:22:01,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:22:01,943 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53599807, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:22:01,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 01:22:01,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:22:01,957 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-11-29 01:22:01,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:22:01,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:01,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:01,958 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)] === [2023-11-29 01:22:01,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2064864355, now seen corresponding path program 1 times [2023-11-29 01:22:01,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:01,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749889848] [2023-11-29 01:22:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:01,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749889848] [2023-11-29 01:22:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749889848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:02,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:02,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:22:02,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202950417] [2023-11-29 01:22:02,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:02,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:22:02,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:22:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:22:02,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 01:22:02,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:02,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:02,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 01:22:02,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:02,794 INFO L124 PetriNetUnfolderBase]: 334/710 cut-off events. [2023-11-29 01:22:02,794 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 01:22:02,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 710 events. 334/710 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4523 event pairs, 118 based on Foata normal form. 24/709 useless extension candidates. Maximal degree in co-relation 1275. Up to 411 conditions per place. [2023-11-29 01:22:02,804 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 3 changer transitions 21/61 dead transitions. [2023-11-29 01:22:02,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 231 flow [2023-11-29 01:22:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:22:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:22:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2023-11-29 01:22:02,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2023-11-29 01:22:02,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 168 transitions. [2023-11-29 01:22:02,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 168 transitions. [2023-11-29 01:22:02,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:02,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 168 transitions. [2023-11-29 01:22:02,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:02,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:02,831 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:02,833 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 7 states and 168 transitions. [2023-11-29 01:22:02,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 231 flow [2023-11-29 01:22:02,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:22:02,839 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 103 flow [2023-11-29 01:22:02,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=103, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-11-29 01:22:02,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-11-29 01:22:02,845 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 103 flow [2023-11-29 01:22:02,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:02,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:02,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:02,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:22:02,846 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)] === [2023-11-29 01:22:02,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:02,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1395086268, now seen corresponding path program 1 times [2023-11-29 01:22:02,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:02,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463986888] [2023-11-29 01:22:02,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:02,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:03,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:03,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463986888] [2023-11-29 01:22:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463986888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:03,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:03,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:22:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062946028] [2023-11-29 01:22:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:03,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:22:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:03,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:22:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:22:03,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2023-11-29 01:22:03,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:03,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2023-11-29 01:22:03,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:03,427 INFO L124 PetriNetUnfolderBase]: 511/1025 cut-off events. [2023-11-29 01:22:03,427 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2023-11-29 01:22:03,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1025 events. 511/1025 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6912 event pairs, 63 based on Foata normal form. 30/1044 useless extension candidates. Maximal degree in co-relation 2359. Up to 321 conditions per place. [2023-11-29 01:22:03,436 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 40 selfloop transitions, 8 changer transitions 38/99 dead transitions. [2023-11-29 01:22:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 99 transitions, 493 flow [2023-11-29 01:22:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:22:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:22:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 297 transitions. [2023-11-29 01:22:03,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6174636174636174 [2023-11-29 01:22:03,441 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 297 transitions. [2023-11-29 01:22:03,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 297 transitions. [2023-11-29 01:22:03,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:03,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 297 transitions. [2023-11-29 01:22:03,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,448 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,448 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 103 flow. Second operand 13 states and 297 transitions. [2023-11-29 01:22:03,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 99 transitions, 493 flow [2023-11-29 01:22:03,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 99 transitions, 466 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-29 01:22:03,455 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 187 flow [2023-11-29 01:22:03,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=38} [2023-11-29 01:22:03,457 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2023-11-29 01:22:03,457 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 187 flow [2023-11-29 01:22:03,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:03,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:03,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:22:03,458 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)] === [2023-11-29 01:22:03,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1412354468, now seen corresponding path program 1 times [2023-11-29 01:22:03,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:03,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806807160] [2023-11-29 01:22:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:03,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:03,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:03,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806807160] [2023-11-29 01:22:03,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806807160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:03,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:03,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:22:03,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717313455] [2023-11-29 01:22:03,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:03,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:22:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:03,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:22:03,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:22:03,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 01:22:03,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:03,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 01:22:03,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:03,794 INFO L124 PetriNetUnfolderBase]: 325/691 cut-off events. [2023-11-29 01:22:03,794 INFO L125 PetriNetUnfolderBase]: For 2106/2108 co-relation queries the response was YES. [2023-11-29 01:22:03,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 691 events. 325/691 cut-off events. For 2106/2108 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4352 event pairs, 78 based on Foata normal form. 26/694 useless extension candidates. Maximal degree in co-relation 2227. Up to 372 conditions per place. [2023-11-29 01:22:03,801 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 27 selfloop transitions, 4 changer transitions 23/69 dead transitions. [2023-11-29 01:22:03,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 461 flow [2023-11-29 01:22:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:22:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:22:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2023-11-29 01:22:03,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6332046332046332 [2023-11-29 01:22:03,803 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 164 transitions. [2023-11-29 01:22:03,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 164 transitions. [2023-11-29 01:22:03,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:03,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 164 transitions. [2023-11-29 01:22:03,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,806 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,806 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 187 flow. Second operand 7 states and 164 transitions. [2023-11-29 01:22:03,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 461 flow [2023-11-29 01:22:03,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 406 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-11-29 01:22:03,816 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 184 flow [2023-11-29 01:22:03,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2023-11-29 01:22:03,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-11-29 01:22:03,817 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 184 flow [2023-11-29 01:22:03,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:03,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:03,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:22:03,818 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)] === [2023-11-29 01:22:03,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2053341702, now seen corresponding path program 1 times [2023-11-29 01:22:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:03,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368175423] [2023-11-29 01:22:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:03,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368175423] [2023-11-29 01:22:03,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368175423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:03,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:03,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:22:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235151793] [2023-11-29 01:22:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:03,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:22:03,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:22:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:22:03,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2023-11-29 01:22:03,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:03,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:03,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2023-11-29 01:22:03,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:04,201 INFO L124 PetriNetUnfolderBase]: 410/822 cut-off events. [2023-11-29 01:22:04,201 INFO L125 PetriNetUnfolderBase]: For 1788/1788 co-relation queries the response was YES. [2023-11-29 01:22:04,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 822 events. 410/822 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5313 event pairs, 144 based on Foata normal form. 22/827 useless extension candidates. Maximal degree in co-relation 2433. Up to 193 conditions per place. [2023-11-29 01:22:04,206 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 22 selfloop transitions, 3 changer transitions 33/71 dead transitions. [2023-11-29 01:22:04,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 474 flow [2023-11-29 01:22:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:22:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:22:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2023-11-29 01:22:04,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148648648648649 [2023-11-29 01:22:04,208 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 182 transitions. [2023-11-29 01:22:04,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 182 transitions. [2023-11-29 01:22:04,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:04,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 182 transitions. [2023-11-29 01:22:04,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,210 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 184 flow. Second operand 8 states and 182 transitions. [2023-11-29 01:22:04,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 474 flow [2023-11-29 01:22:04,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 430 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-11-29 01:22:04,217 INFO L231 Difference]: Finished difference. Result has 63 places, 31 transitions, 130 flow [2023-11-29 01:22:04,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=31} [2023-11-29 01:22:04,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2023-11-29 01:22:04,218 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 31 transitions, 130 flow [2023-11-29 01:22:04,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:04,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:04,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:22:04,219 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)] === [2023-11-29 01:22:04,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1757665718, now seen corresponding path program 1 times [2023-11-29 01:22:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:04,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100555106] [2023-11-29 01:22:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:04,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:04,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100555106] [2023-11-29 01:22:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100555106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:04,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:04,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:22:04,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94854473] [2023-11-29 01:22:04,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:22:04,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:22:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:22:04,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2023-11-29 01:22:04,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 31 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:04,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2023-11-29 01:22:04,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:04,609 INFO L124 PetriNetUnfolderBase]: 325/643 cut-off events. [2023-11-29 01:22:04,609 INFO L125 PetriNetUnfolderBase]: For 1326/1326 co-relation queries the response was YES. [2023-11-29 01:22:04,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 643 events. 325/643 cut-off events. For 1326/1326 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3509 event pairs, 106 based on Foata normal form. 18/645 useless extension candidates. Maximal degree in co-relation 1932. Up to 219 conditions per place. [2023-11-29 01:22:04,613 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 22 selfloop transitions, 3 changer transitions 29/67 dead transitions. [2023-11-29 01:22:04,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 422 flow [2023-11-29 01:22:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:22:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:22:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2023-11-29 01:22:04,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2023-11-29 01:22:04,615 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 184 transitions. [2023-11-29 01:22:04,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 184 transitions. [2023-11-29 01:22:04,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:04,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 184 transitions. [2023-11-29 01:22:04,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,618 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,618 INFO L175 Difference]: Start difference. First operand has 63 places, 31 transitions, 130 flow. Second operand 8 states and 184 transitions. [2023-11-29 01:22:04,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 422 flow [2023-11-29 01:22:04,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 323 flow, removed 36 selfloop flow, removed 15 redundant places. [2023-11-29 01:22:04,623 INFO L231 Difference]: Finished difference. Result has 56 places, 31 transitions, 110 flow [2023-11-29 01:22:04,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=56, PETRI_TRANSITIONS=31} [2023-11-29 01:22:04,624 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2023-11-29 01:22:04,624 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 31 transitions, 110 flow [2023-11-29 01:22:04,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:04,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:04,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:22:04,625 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)] === [2023-11-29 01:22:04,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash 249785581, now seen corresponding path program 1 times [2023-11-29 01:22:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493754945] [2023-11-29 01:22:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:04,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:04,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:04,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493754945] [2023-11-29 01:22:04,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493754945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:04,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:04,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:22:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205781065] [2023-11-29 01:22:04,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:04,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:22:04,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:22:04,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:22:04,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 01:22:04,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 31 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:04,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 01:22:04,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:04,835 INFO L124 PetriNetUnfolderBase]: 309/632 cut-off events. [2023-11-29 01:22:04,835 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2023-11-29 01:22:04,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 632 events. 309/632 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3529 event pairs, 78 based on Foata normal form. 27/631 useless extension candidates. Maximal degree in co-relation 1519. Up to 258 conditions per place. [2023-11-29 01:22:04,839 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 5 changer transitions 1/44 dead transitions. [2023-11-29 01:22:04,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 196 flow [2023-11-29 01:22:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:22:04,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:22:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2023-11-29 01:22:04,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.722972972972973 [2023-11-29 01:22:04,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 107 transitions. [2023-11-29 01:22:04,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 107 transitions. [2023-11-29 01:22:04,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:04,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 107 transitions. [2023-11-29 01:22:04,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,842 INFO L175 Difference]: Start difference. First operand has 56 places, 31 transitions, 110 flow. Second operand 4 states and 107 transitions. [2023-11-29 01:22:04,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 196 flow [2023-11-29 01:22:04,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 176 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-29 01:22:04,846 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 124 flow [2023-11-29 01:22:04,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-29 01:22:04,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-11-29 01:22:04,847 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 124 flow [2023-11-29 01:22:04,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:04,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:04,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:22:04,848 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)] === [2023-11-29 01:22:04,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2126570806, now seen corresponding path program 1 times [2023-11-29 01:22:04,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187643505] [2023-11-29 01:22:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:04,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:04,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187643505] [2023-11-29 01:22:04,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187643505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:04,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:04,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:22:04,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633535244] [2023-11-29 01:22:04,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:04,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:22:04,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:22:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:22:04,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 01:22:04,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:04,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:04,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 01:22:04,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:05,056 INFO L124 PetriNetUnfolderBase]: 245/505 cut-off events. [2023-11-29 01:22:05,057 INFO L125 PetriNetUnfolderBase]: For 262/338 co-relation queries the response was YES. [2023-11-29 01:22:05,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 505 events. 245/505 cut-off events. For 262/338 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2466 event pairs, 27 based on Foata normal form. 30/516 useless extension candidates. Maximal degree in co-relation 1254. Up to 181 conditions per place. [2023-11-29 01:22:05,060 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 27 selfloop transitions, 8 changer transitions 1/51 dead transitions. [2023-11-29 01:22:05,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 247 flow [2023-11-29 01:22:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:22:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:22:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2023-11-29 01:22:05,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7189189189189189 [2023-11-29 01:22:05,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 133 transitions. [2023-11-29 01:22:05,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 133 transitions. [2023-11-29 01:22:05,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:05,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 133 transitions. [2023-11-29 01:22:05,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,064 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,064 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 124 flow. Second operand 5 states and 133 transitions. [2023-11-29 01:22:05,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 247 flow [2023-11-29 01:22:05,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 237 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 01:22:05,067 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 164 flow [2023-11-29 01:22:05,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-11-29 01:22:05,068 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-11-29 01:22:05,068 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 164 flow [2023-11-29 01:22:05,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:05,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:05,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:22:05,069 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)] === [2023-11-29 01:22:05,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1555551407, now seen corresponding path program 1 times [2023-11-29 01:22:05,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:05,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287946193] [2023-11-29 01:22:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:05,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287946193] [2023-11-29 01:22:05,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287946193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:05,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:05,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:22:05,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804479130] [2023-11-29 01:22:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:05,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:22:05,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:22:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:22:05,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 01:22:05,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:05,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 01:22:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:05,286 INFO L124 PetriNetUnfolderBase]: 150/300 cut-off events. [2023-11-29 01:22:05,286 INFO L125 PetriNetUnfolderBase]: For 369/485 co-relation queries the response was YES. [2023-11-29 01:22:05,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 300 events. 150/300 cut-off events. For 369/485 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1054 event pairs, 6 based on Foata normal form. 28/315 useless extension candidates. Maximal degree in co-relation 832. Up to 84 conditions per place. [2023-11-29 01:22:05,288 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 11 changer transitions 1/52 dead transitions. [2023-11-29 01:22:05,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 274 flow [2023-11-29 01:22:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:22:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:22:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2023-11-29 01:22:05,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891891891891891 [2023-11-29 01:22:05,289 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 153 transitions. [2023-11-29 01:22:05,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 153 transitions. [2023-11-29 01:22:05,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:05,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 153 transitions. [2023-11-29 01:22:05,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,292 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,292 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 164 flow. Second operand 6 states and 153 transitions. [2023-11-29 01:22:05,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 274 flow [2023-11-29 01:22:05,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 231 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-11-29 01:22:05,294 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 160 flow [2023-11-29 01:22:05,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-11-29 01:22:05,295 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-11-29 01:22:05,295 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 160 flow [2023-11-29 01:22:05,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:05,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:05,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:22:05,296 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)] === [2023-11-29 01:22:05,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1628705144, now seen corresponding path program 1 times [2023-11-29 01:22:05,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:05,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162130086] [2023-11-29 01:22:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:05,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162130086] [2023-11-29 01:22:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162130086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:05,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:05,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:22:05,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005450084] [2023-11-29 01:22:05,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:05,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:22:05,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:05,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:22:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:22:05,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2023-11-29 01:22:05,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:05,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2023-11-29 01:22:05,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:05,570 INFO L124 PetriNetUnfolderBase]: 116/262 cut-off events. [2023-11-29 01:22:05,570 INFO L125 PetriNetUnfolderBase]: For 190/194 co-relation queries the response was YES. [2023-11-29 01:22:05,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 262 events. 116/262 cut-off events. For 190/194 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 984 event pairs, 26 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 637. Up to 98 conditions per place. [2023-11-29 01:22:05,571 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2023-11-29 01:22:05,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 240 flow [2023-11-29 01:22:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:22:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:22:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2023-11-29 01:22:05,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482625482625483 [2023-11-29 01:22:05,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 142 transitions. [2023-11-29 01:22:05,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 142 transitions. [2023-11-29 01:22:05,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:05,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 142 transitions. [2023-11-29 01:22:05,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,575 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 160 flow. Second operand 7 states and 142 transitions. [2023-11-29 01:22:05,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 240 flow [2023-11-29 01:22:05,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 184 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-29 01:22:05,577 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-11-29 01:22:05,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-11-29 01:22:05,578 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2023-11-29 01:22:05,578 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-11-29 01:22:05,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:05,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 01:22:05,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 01:22:05,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 01:22:05,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 01:22:05,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:22:05,581 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:05,584 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 01:22:05,584 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:22:05,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:22:05 BasicIcfg [2023-11-29 01:22:05,590 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:22:05,590 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:22:05,591 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:22:05,591 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:22:05,591 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:22:01" (3/4) ... [2023-11-29 01:22:05,593 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:22:05,595 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 01:22:05,596 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 01:22:05,596 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-29 01:22:05,600 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2023-11-29 01:22:05,600 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-29 01:22:05,600 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 01:22:05,600 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 01:22:05,664 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:22:05,665 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:22:05,665 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:22:05,666 INFO L158 Benchmark]: Toolchain (without parser) took 4804.45ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 101.8MB in the beginning and 158.0MB in the end (delta: -56.1MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2023-11-29 01:22:05,666 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory was 113.8MB in the beginning and 113.6MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:22:05,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.68ms. Allocated memory is still 142.6MB. Free memory was 101.8MB in the beginning and 81.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 01:22:05,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.21ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 79.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:22:05,667 INFO L158 Benchmark]: Boogie Preprocessor took 42.66ms. Allocated memory is still 142.6MB. Free memory was 79.2MB in the beginning and 76.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:22:05,668 INFO L158 Benchmark]: RCFGBuilder took 451.59ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 111.6MB in the end (delta: -34.9MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2023-11-29 01:22:05,668 INFO L158 Benchmark]: TraceAbstraction took 3797.51ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 110.9MB in the beginning and 162.1MB in the end (delta: -51.2MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2023-11-29 01:22:05,668 INFO L158 Benchmark]: Witness Printer took 74.48ms. Allocated memory is still 207.6MB. Free memory was 162.1MB in the beginning and 158.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:22:05,670 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory was 113.8MB in the beginning and 113.6MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.68ms. Allocated memory is still 142.6MB. Free memory was 101.8MB in the beginning and 81.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.21ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 79.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.66ms. Allocated memory is still 142.6MB. Free memory was 79.2MB in the beginning and 76.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 451.59ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 111.6MB in the end (delta: -34.9MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3797.51ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 110.9MB in the beginning and 162.1MB in the end (delta: -51.2MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Witness Printer took 74.48ms. Allocated memory is still 207.6MB. Free memory was 162.1MB in the beginning and 158.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 60 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: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 384 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 132 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 719 IncrementalHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 45 mSDtfsCounter, 719 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=2, InterpolantAutomatonStates: 65, 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, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 816 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! [2023-11-29 01:22:05,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff1dc38-0d77-4a3a-b68e-eda395b84245/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE