./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.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_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/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_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/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_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/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 fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:31:11,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:31:11,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:31:11,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:31:11,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:31:11,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:31:11,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:31:11,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:31:11,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:31:11,953 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:31:11,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:31:11,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:31:11,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:31:11,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:31:11,955 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:31:11,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:31:11,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:31:11,957 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:31:11,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:31:11,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:31:11,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:31:11,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:31:11,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:31:11,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:31:11,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:31:11,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:31:11,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:31:11,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:31:11,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:31:11,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:31:11,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:31:11,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:31:11,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:31:11,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:31:11,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:31:11,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:31:11,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:31:11,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:31:11,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:31:11,965 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:31:11,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:31:11,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:31:11,966 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_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 [2023-11-29 01:31:12,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:31:12,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:31:12,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:31:12,217 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:31:12,217 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:31:12,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-29 01:31:14,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:31:15,113 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:31:15,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-29 01:31:15,130 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/data/5b4439c1e/c8bbf6102ef7482c93ec900c4acb90ee/FLAG27f2d153f [2023-11-29 01:31:15,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/data/5b4439c1e/c8bbf6102ef7482c93ec900c4acb90ee [2023-11-29 01:31:15,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:31:15,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:31:15,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:31:15,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:31:15,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:31:15,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347ad8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15, skipping insertion in model container [2023-11-29 01:31:15,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:31:15,392 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_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-29 01:31:15,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:31:15,532 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:31:15,544 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_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-29 01:31:15,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:31:15,603 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:31:15,603 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:31:15,611 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:31:15,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15 WrapperNode [2023-11-29 01:31:15,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:31:15,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:31:15,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:31:15,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:31:15,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,655 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-29 01:31:15,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:31:15,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:31:15,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:31:15,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:31:15,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,683 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 01:31:15,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:31:15,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:31:15,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:31:15,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:31:15,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (1/1) ... [2023-11-29 01:31:15,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:31:15,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:15,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:31:15,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:31:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:31:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:31:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:31:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:31:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:31:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:31:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:31:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:31:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 01:31:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 01:31:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 01:31:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 01:31:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-29 01:31:15,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-29 01:31:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:31:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:31:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:31:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:31:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:31:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:31:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:31:15,767 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 01:31:15,903 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:31:15,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:31:16,047 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:31:16,140 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:31:16,141 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:31:16,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:31:16 BoogieIcfgContainer [2023-11-29 01:31:16,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:31:16,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:31:16,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:31:16,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:31:16,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:31:15" (1/3) ... [2023-11-29 01:31:16,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a8c311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:31:16, skipping insertion in model container [2023-11-29 01:31:16,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:15" (2/3) ... [2023-11-29 01:31:16,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a8c311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:31:16, skipping insertion in model container [2023-11-29 01:31:16,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:31:16" (3/3) ... [2023-11-29 01:31:16,151 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-29 01:31:16,160 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:31:16,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:31:16,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:31:16,171 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:31:16,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:31:16,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 41 transitions, 94 flow [2023-11-29 01:31:16,278 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2023-11-29 01:31:16,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:31:16,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-29 01:31:16,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 41 transitions, 94 flow [2023-11-29 01:31:16,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2023-11-29 01:31:16,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:31:16,303 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;@2511043c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:31:16,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 01:31:16,317 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:31:16,318 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2023-11-29 01:31:16,318 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:31:16,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:16,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:16,319 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 01:31:16,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -597247054, now seen corresponding path program 1 times [2023-11-29 01:31:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:16,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381541667] [2023-11-29 01:31:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:16,848 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 01:31:16,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:16,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381541667] [2023-11-29 01:31:16,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381541667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:16,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:16,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:16,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805465721] [2023-11-29 01:31:16,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:16,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:16,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:16,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-29 01:31:16,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 01:31:16,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:16,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-29 01:31:16,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:17,083 INFO L124 PetriNetUnfolderBase]: 291/594 cut-off events. [2023-11-29 01:31:17,083 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 01:31:17,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 594 events. 291/594 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3193 event pairs, 58 based on Foata normal form. 27/611 useless extension candidates. Maximal degree in co-relation 1089. Up to 236 conditions per place. [2023-11-29 01:31:17,091 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 25 selfloop transitions, 5 changer transitions 1/50 dead transitions. [2023-11-29 01:31:17,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 177 flow [2023-11-29 01:31:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:31:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2023-11-29 01:31:17,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7621951219512195 [2023-11-29 01:31:17,103 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 125 transitions. [2023-11-29 01:31:17,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 125 transitions. [2023-11-29 01:31:17,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:17,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 125 transitions. [2023-11-29 01:31:17,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.25) internal successors, (125), 4 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 01:31:17,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 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 01:31:17,112 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 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 01:31:17,114 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 4 states and 125 transitions. [2023-11-29 01:31:17,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 177 flow [2023-11-29 01:31:17,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:31:17,119 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 110 flow [2023-11-29 01:31:17,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-29 01:31:17,124 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-29 01:31:17,125 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 110 flow [2023-11-29 01:31:17,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 01:31:17,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:17,125 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] [2023-11-29 01:31:17,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:31:17,126 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 01:31:17,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:17,126 INFO L85 PathProgramCache]: Analyzing trace with hash -571565681, now seen corresponding path program 1 times [2023-11-29 01:31:17,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:17,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559401095] [2023-11-29 01:31:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:17,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:17,328 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 01:31:17,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:17,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559401095] [2023-11-29 01:31:17,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559401095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:17,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:17,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:17,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528007691] [2023-11-29 01:31:17,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:17,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-29 01:31:17,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 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 01:31:17,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:17,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-29 01:31:17,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:17,506 INFO L124 PetriNetUnfolderBase]: 249/509 cut-off events. [2023-11-29 01:31:17,506 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-29 01:31:17,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 509 events. 249/509 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2487 event pairs, 15 based on Foata normal form. 26/527 useless extension candidates. Maximal degree in co-relation 1175. Up to 188 conditions per place. [2023-11-29 01:31:17,513 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 31 selfloop transitions, 8 changer transitions 1/59 dead transitions. [2023-11-29 01:31:17,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 253 flow [2023-11-29 01:31:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:31:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:31:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2023-11-29 01:31:17,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7658536585365854 [2023-11-29 01:31:17,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 157 transitions. [2023-11-29 01:31:17,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 157 transitions. [2023-11-29 01:31:17,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:17,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 157 transitions. [2023-11-29 01:31:17,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 01:31:17,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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 01:31:17,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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 01:31:17,520 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 110 flow. Second operand 5 states and 157 transitions. [2023-11-29 01:31:17,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 253 flow [2023-11-29 01:31:17,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 01:31:17,524 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 150 flow [2023-11-29 01:31:17,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-11-29 01:31:17,525 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2023-11-29 01:31:17,525 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 150 flow [2023-11-29 01:31:17,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 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 01:31:17,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:17,526 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] [2023-11-29 01:31:17,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:31:17,526 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 01:31:17,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:17,527 INFO L85 PathProgramCache]: Analyzing trace with hash -244506166, now seen corresponding path program 1 times [2023-11-29 01:31:17,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:17,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959275918] [2023-11-29 01:31:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:17,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:17,693 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 01:31:17,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:17,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959275918] [2023-11-29 01:31:17,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959275918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:17,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:17,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:31:17,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93643587] [2023-11-29 01:31:17,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:17,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:31:17,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:17,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:31:17,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:17,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-29 01:31:17,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 01:31:17,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:17,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-29 01:31:17,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:17,863 INFO L124 PetriNetUnfolderBase]: 174/344 cut-off events. [2023-11-29 01:31:17,863 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-11-29 01:31:17,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 344 events. 174/344 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1252 event pairs, 6 based on Foata normal form. 20/356 useless extension candidates. Maximal degree in co-relation 929. Up to 108 conditions per place. [2023-11-29 01:31:17,867 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 29 selfloop transitions, 11 changer transitions 1/60 dead transitions. [2023-11-29 01:31:17,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 280 flow [2023-11-29 01:31:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:31:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:31:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2023-11-29 01:31:17,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7357723577235772 [2023-11-29 01:31:17,870 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 181 transitions. [2023-11-29 01:31:17,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 181 transitions. [2023-11-29 01:31:17,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:17,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 181 transitions. [2023-11-29 01:31:17,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 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 01:31:17,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 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 01:31:17,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 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 01:31:17,874 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 150 flow. Second operand 6 states and 181 transitions. [2023-11-29 01:31:17,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 280 flow [2023-11-29 01:31:17,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 255 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-29 01:31:17,878 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 164 flow [2023-11-29 01:31:17,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2023-11-29 01:31:17,879 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-11-29 01:31:17,879 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 164 flow [2023-11-29 01:31:17,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 01:31:17,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:17,880 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, 1, 1, 1, 1] [2023-11-29 01:31:17,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:31:17,880 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 01:31:17,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:17,881 INFO L85 PathProgramCache]: Analyzing trace with hash 745358753, now seen corresponding path program 1 times [2023-11-29 01:31:17,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:17,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096934255] [2023-11-29 01:31:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:17,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:18,071 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 01:31:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096934255] [2023-11-29 01:31:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096934255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:18,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:18,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:31:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698258727] [2023-11-29 01:31:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:18,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:31:18,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:31:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:18,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2023-11-29 01:31:18,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 01:31:18,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:18,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2023-11-29 01:31:18,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:18,429 INFO L124 PetriNetUnfolderBase]: 646/1327 cut-off events. [2023-11-29 01:31:18,429 INFO L125 PetriNetUnfolderBase]: For 660/686 co-relation queries the response was YES. [2023-11-29 01:31:18,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1327 events. 646/1327 cut-off events. For 660/686 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8375 event pairs, 167 based on Foata normal form. 16/1242 useless extension candidates. Maximal degree in co-relation 3005. Up to 360 conditions per place. [2023-11-29 01:31:18,438 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 24 selfloop transitions, 6 changer transitions 27/79 dead transitions. [2023-11-29 01:31:18,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 374 flow [2023-11-29 01:31:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:31:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:31:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2023-11-29 01:31:18,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6676829268292683 [2023-11-29 01:31:18,441 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 219 transitions. [2023-11-29 01:31:18,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 219 transitions. [2023-11-29 01:31:18,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:18,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 219 transitions. [2023-11-29 01:31:18,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 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 01:31:18,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 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 01:31:18,444 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 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 01:31:18,444 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 164 flow. Second operand 8 states and 219 transitions. [2023-11-29 01:31:18,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 374 flow [2023-11-29 01:31:18,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 302 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-29 01:31:18,454 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 156 flow [2023-11-29 01:31:18,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=156, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-11-29 01:31:18,455 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-11-29 01:31:18,456 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 156 flow [2023-11-29 01:31:18,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 01:31:18,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:18,456 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, 1, 1, 1, 1] [2023-11-29 01:31:18,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:31:18,457 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 01:31:18,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2096257517, now seen corresponding path program 2 times [2023-11-29 01:31:18,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:18,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746802548] [2023-11-29 01:31:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:18,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:18,632 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 01:31:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746802548] [2023-11-29 01:31:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746802548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:18,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:18,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:31:18,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018962549] [2023-11-29 01:31:18,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:18,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:31:18,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:18,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:31:18,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:18,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-29 01:31:18,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 01:31:18,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:18,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-29 01:31:18,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:31:18,843 INFO L124 PetriNetUnfolderBase]: 347/784 cut-off events. [2023-11-29 01:31:18,843 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-29 01:31:18,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 784 events. 347/784 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4730 event pairs, 76 based on Foata normal form. 8/710 useless extension candidates. Maximal degree in co-relation 1626. Up to 224 conditions per place. [2023-11-29 01:31:18,848 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-11-29 01:31:18,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 260 flow [2023-11-29 01:31:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:31:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:31:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2023-11-29 01:31:18,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6951219512195121 [2023-11-29 01:31:18,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 171 transitions. [2023-11-29 01:31:18,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 171 transitions. [2023-11-29 01:31:18,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:31:18,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 171 transitions. [2023-11-29 01:31:18,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 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 01:31:18,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 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 01:31:18,852 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 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 01:31:18,853 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 156 flow. Second operand 6 states and 171 transitions. [2023-11-29 01:31:18,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 260 flow [2023-11-29 01:31:18,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 252 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 01:31:18,855 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-11-29 01:31:18,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-11-29 01:31:18,856 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2023-11-29 01:31:18,856 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-11-29 01:31:18,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 01:31:18,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 01:31:18,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 01:31:18,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 01:31:18,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 01:31:18,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:31:18,860 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-11-29 01:31:18,863 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 01:31:18,864 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:31:18,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:31:18 BasicIcfg [2023-11-29 01:31:18,869 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:31:18,870 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:31:18,870 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:31:18,870 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:31:18,871 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:31:16" (3/4) ... [2023-11-29 01:31:18,873 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:31:18,876 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 01:31:18,876 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 01:31:18,876 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-29 01:31:18,881 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-29 01:31:18,881 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-29 01:31:18,881 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 01:31:18,881 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 01:31:18,964 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:31:18,965 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:31:18,965 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:31:18,966 INFO L158 Benchmark]: Toolchain (without parser) took 3806.49ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 107.4MB in the beginning and 47.8MB in the end (delta: 59.5MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. [2023-11-29 01:31:18,966 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:31:18,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.45ms. Allocated memory is still 134.2MB. Free memory was 106.9MB in the beginning and 86.3MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 01:31:18,967 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.01ms. Allocated memory is still 134.2MB. Free memory was 86.3MB in the beginning and 84.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:31:18,967 INFO L158 Benchmark]: Boogie Preprocessor took 41.88ms. Allocated memory is still 134.2MB. Free memory was 84.2MB in the beginning and 82.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:31:18,968 INFO L158 Benchmark]: RCFGBuilder took 442.53ms. Allocated memory is still 134.2MB. Free memory was 82.1MB in the beginning and 60.2MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 01:31:18,968 INFO L158 Benchmark]: TraceAbstraction took 2725.26ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 59.4MB in the beginning and 53.1MB in the end (delta: 6.4MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2023-11-29 01:31:18,969 INFO L158 Benchmark]: Witness Printer took 95.13ms. Allocated memory is still 174.1MB. Free memory was 53.1MB in the beginning and 47.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:31:18,971 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.45ms. Allocated memory is still 134.2MB. Free memory was 106.9MB in the beginning and 86.3MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.01ms. Allocated memory is still 134.2MB. Free memory was 86.3MB in the beginning and 84.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.88ms. Allocated memory is still 134.2MB. Free memory was 84.2MB in the beginning and 82.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.53ms. Allocated memory is still 134.2MB. Free memory was 82.1MB in the beginning and 60.2MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2725.26ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 59.4MB in the beginning and 53.1MB in the end (delta: 6.4MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * Witness Printer took 95.13ms. Allocated memory is still 174.1MB. Free memory was 53.1MB in the beginning and 47.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 68 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: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 207 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 178 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 393 IncrementalHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 18 mSDtfsCounter, 393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 1.0s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 01:31:18,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e622b3-4cdc-43ee-92ea-5f03d06fdf05/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