./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_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_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI --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 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:58:36,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:58:37,111 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:58:37,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:58:37,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:58:37,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:58:37,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:58:37,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:58:37,163 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:58:37,168 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:58:37,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:58:37,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:58:37,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:58:37,172 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:58:37,172 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:58:37,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:58:37,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:58:37,174 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:58:37,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:58:37,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:58:37,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:58:37,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:58:37,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:58:37,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:58:37,177 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:58:37,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:58:37,178 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:58:37,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:58:37,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:58:37,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:58:37,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:58:37,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:58:37,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:58:37,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:58:37,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:58:37,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:58:37,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:58:37,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:58:37,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:58:37,181 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:58:37,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:58:37,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:58:37,182 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_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2023-11-24 21:58:37,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:58:37,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:58:37,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:58:37,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:58:37,545 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:58:37,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:58:40,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:58:41,178 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:58:41,179 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:58:41,196 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/data/13fe7dcde/d7551703150948bd915e14ec238053ea/FLAGe6e98d049 [2023-11-24 21:58:41,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/data/13fe7dcde/d7551703150948bd915e14ec238053ea [2023-11-24 21:58:41,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:58:41,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:58:41,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:58:41,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:58:41,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:58:41,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:41,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@670339f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41, skipping insertion in model container [2023-11-24 21:58:41,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:41,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:58:41,465 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_d48051ab-a224-4a85-a7f5-99274567aadb/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-24 21:58:41,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:58:41,760 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:58:41,776 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_d48051ab-a224-4a85-a7f5-99274567aadb/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-24 21:58:41,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:58:41,882 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:58:41,883 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:58:41,891 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:58:41,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41 WrapperNode [2023-11-24 21:58:41,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:58:41,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:58:41,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:58:41,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:58:41,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:41,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:41,972 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-24 21:58:41,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:58:41,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:58:41,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:58:41,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:58:41,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:41,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,002 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,033 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]. [2023-11-24 21:58:42,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:58:42,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:58:42,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:58:42,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:58:42,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (1/1) ... [2023-11-24 21:58:42,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:58:42,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:58:42,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:58:42,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:58:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:58:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:58:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:58:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:58:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:58:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:58:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:58:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:58:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:58:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:58:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:58:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:58:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:58:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:58:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:58:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:58:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:58:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:58:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:58:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:58:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:58:42,151 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:58:42,355 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:58:42,358 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:58:42,545 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:58:42,727 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:58:42,727 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:58:42,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:58:42 BoogieIcfgContainer [2023-11-24 21:58:42,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:58:42,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:58:42,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:58:42,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:58:42,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:58:41" (1/3) ... [2023-11-24 21:58:42,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f64210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:58:42, skipping insertion in model container [2023-11-24 21:58:42,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:58:41" (2/3) ... [2023-11-24 21:58:42,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f64210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:58:42, skipping insertion in model container [2023-11-24 21:58:42,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:58:42" (3/3) ... [2023-11-24 21:58:42,740 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:58:42,756 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:58:42,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:58:42,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:58:42,768 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:58:42,813 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:58:42,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2023-11-24 21:58:42,890 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-24 21:58:42,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:58:42,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-24 21:58:42,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2023-11-24 21:58:42,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2023-11-24 21:58:42,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:58:42,917 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;@3bfb37b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:58:42,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 21:58:42,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:58:42,932 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-24 21:58:42,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:58:42,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:42,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:42,934 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)] === [2023-11-24 21:58:42,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1296380526, now seen corresponding path program 1 times [2023-11-24 21:58:42,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:42,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456597448] [2023-11-24 21:58:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:42,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456597448] [2023-11-24 21:58:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456597448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:43,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:58:43,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132390175] [2023-11-24 21:58:43,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:43,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:58:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:43,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:58:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:58:43,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-24 21:58:43,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-24 21:58:43,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:43,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-24 21:58:43,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:44,585 INFO L124 PetriNetUnfolderBase]: 1589/2964 cut-off events. [2023-11-24 21:58:44,585 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-24 21:58:44,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5447 conditions, 2964 events. 1589/2964 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 21128 event pairs, 465 based on Foata normal form. 99/3015 useless extension candidates. Maximal degree in co-relation 5436. Up to 965 conditions per place. [2023-11-24 21:58:44,621 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 30 selfloop transitions, 7 changer transitions 39/89 dead transitions. [2023-11-24 21:58:44,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 89 transitions, 345 flow [2023-11-24 21:58:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:58:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:58:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2023-11-24 21:58:44,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959706959706959 [2023-11-24 21:58:44,641 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 190 transitions. [2023-11-24 21:58:44,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 190 transitions. [2023-11-24 21:58:44,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:44,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 190 transitions. [2023-11-24 21:58:44,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 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) [2023-11-24 21:58:44,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 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) [2023-11-24 21:58:44,662 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 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) [2023-11-24 21:58:44,664 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 7 states and 190 transitions. [2023-11-24 21:58:44,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 89 transitions, 345 flow [2023-11-24 21:58:44,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:58:44,678 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 158 flow [2023-11-24 21:58:44,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-24 21:58:44,684 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-11-24 21:58:44,684 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 158 flow [2023-11-24 21:58:44,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-24 21:58:44,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:44,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:44,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:58:44,686 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)] === [2023-11-24 21:58:44,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1303634287, now seen corresponding path program 1 times [2023-11-24 21:58:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:44,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667324822] [2023-11-24 21:58:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:44,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667324822] [2023-11-24 21:58:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667324822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:44,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:44,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:58:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196212055] [2023-11-24 21:58:44,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:58:44,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:58:44,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:58:44,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-24 21:58:44,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 158 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) [2023-11-24 21:58:44,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:44,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-24 21:58:44,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:45,592 INFO L124 PetriNetUnfolderBase]: 1351/2599 cut-off events. [2023-11-24 21:58:45,592 INFO L125 PetriNetUnfolderBase]: For 3332/3340 co-relation queries the response was YES. [2023-11-24 21:58:45,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7595 conditions, 2599 events. 1351/2599 cut-off events. For 3332/3340 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18368 event pairs, 206 based on Foata normal form. 82/2662 useless extension candidates. Maximal degree in co-relation 7579. Up to 774 conditions per place. [2023-11-24 21:58:45,616 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 37 selfloop transitions, 8 changer transitions 58/116 dead transitions. [2023-11-24 21:58:45,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 116 transitions, 772 flow [2023-11-24 21:58:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:58:45,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:58:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2023-11-24 21:58:45,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6487179487179487 [2023-11-24 21:58:45,620 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 253 transitions. [2023-11-24 21:58:45,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 253 transitions. [2023-11-24 21:58:45,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:45,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 253 transitions. [2023-11-24 21:58:45,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.3) internal successors, (253), 10 states have internal predecessors, (253), 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) [2023-11-24 21:58:45,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-24 21:58:45,625 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-24 21:58:45,626 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 158 flow. Second operand 10 states and 253 transitions. [2023-11-24 21:58:45,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 116 transitions, 772 flow [2023-11-24 21:58:45,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 116 transitions, 714 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:58:45,639 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 230 flow [2023-11-24 21:58:45,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=230, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2023-11-24 21:58:45,640 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2023-11-24 21:58:45,641 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 230 flow [2023-11-24 21:58:45,641 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) [2023-11-24 21:58:45,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:45,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:45,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:58:45,642 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)] === [2023-11-24 21:58:45,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1687819023, now seen corresponding path program 1 times [2023-11-24 21:58:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:45,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063579003] [2023-11-24 21:58:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:45,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:45,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:45,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063579003] [2023-11-24 21:58:45,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063579003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:45,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:45,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:58:45,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118836054] [2023-11-24 21:58:45,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:45,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:58:45,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:45,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:58:45,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:58:45,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-24 21:58:45,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 230 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) [2023-11-24 21:58:45,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:45,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-24 21:58:45,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:46,473 INFO L124 PetriNetUnfolderBase]: 1199/2334 cut-off events. [2023-11-24 21:58:46,473 INFO L125 PetriNetUnfolderBase]: For 6905/6909 co-relation queries the response was YES. [2023-11-24 21:58:46,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7905 conditions, 2334 events. 1199/2334 cut-off events. For 6905/6909 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16382 event pairs, 115 based on Foata normal form. 75/2388 useless extension candidates. Maximal degree in co-relation 7880. Up to 662 conditions per place. [2023-11-24 21:58:46,548 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 43 selfloop transitions, 12 changer transitions 52/120 dead transitions. [2023-11-24 21:58:46,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 120 transitions, 916 flow [2023-11-24 21:58:46,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:58:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:58:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2023-11-24 21:58:46,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6435897435897436 [2023-11-24 21:58:46,556 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 251 transitions. [2023-11-24 21:58:46,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 251 transitions. [2023-11-24 21:58:46,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:46,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 251 transitions. [2023-11-24 21:58:46,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2023-11-24 21:58:46,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-24 21:58:46,561 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-24 21:58:46,561 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 230 flow. Second operand 10 states and 251 transitions. [2023-11-24 21:58:46,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 120 transitions, 916 flow [2023-11-24 21:58:46,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 120 transitions, 869 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-24 21:58:46,591 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 352 flow [2023-11-24 21:58:46,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=352, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2023-11-24 21:58:46,592 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-24 21:58:46,592 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 352 flow [2023-11-24 21:58:46,593 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) [2023-11-24 21:58:46,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:46,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:46,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:58:46,594 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)] === [2023-11-24 21:58:46,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1626481644, now seen corresponding path program 1 times [2023-11-24 21:58:46,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:46,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370706135] [2023-11-24 21:58:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:46,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:46,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:46,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370706135] [2023-11-24 21:58:46,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370706135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:46,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:46,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:58:46,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17740745] [2023-11-24 21:58:46,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:46,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:58:46,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:58:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:58:46,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2023-11-24 21:58:46,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2023-11-24 21:58:46,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:46,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2023-11-24 21:58:46,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:47,437 INFO L124 PetriNetUnfolderBase]: 1026/2233 cut-off events. [2023-11-24 21:58:47,438 INFO L125 PetriNetUnfolderBase]: For 7727/7914 co-relation queries the response was YES. [2023-11-24 21:58:47,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 2233 events. 1026/2233 cut-off events. For 7727/7914 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17707 event pairs, 338 based on Foata normal form. 186/2298 useless extension candidates. Maximal degree in co-relation 7278. Up to 699 conditions per place. [2023-11-24 21:58:47,466 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 23 selfloop transitions, 6 changer transitions 48/103 dead transitions. [2023-11-24 21:58:47,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 772 flow [2023-11-24 21:58:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:58:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:58:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 316 transitions. [2023-11-24 21:58:47,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232741617357002 [2023-11-24 21:58:47,469 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 316 transitions. [2023-11-24 21:58:47,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 316 transitions. [2023-11-24 21:58:47,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:47,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 316 transitions. [2023-11-24 21:58:47,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 24.307692307692307) internal successors, (316), 13 states have internal predecessors, (316), 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) [2023-11-24 21:58:47,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 39.0) internal successors, (546), 14 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:47,474 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 39.0) internal successors, (546), 14 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:58:47,474 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 352 flow. Second operand 13 states and 316 transitions. [2023-11-24 21:58:47,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 772 flow [2023-11-24 21:58:47,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 103 transitions, 708 flow, removed 30 selfloop flow, removed 7 redundant places. [2023-11-24 21:58:47,511 INFO L231 Difference]: Finished difference. Result has 83 places, 49 transitions, 356 flow [2023-11-24 21:58:47,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=356, PETRI_PLACES=83, PETRI_TRANSITIONS=49} [2023-11-24 21:58:47,514 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2023-11-24 21:58:47,515 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 49 transitions, 356 flow [2023-11-24 21:58:47,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2023-11-24 21:58:47,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:47,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:47,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:58:47,516 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)] === [2023-11-24 21:58:47,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash 586327437, now seen corresponding path program 1 times [2023-11-24 21:58:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:47,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52450676] [2023-11-24 21:58:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:47,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52450676] [2023-11-24 21:58:47,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52450676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:47,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:47,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:58:47,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112019292] [2023-11-24 21:58:47,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:47,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:58:47,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:47,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:58:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:58:47,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-24 21:58:47,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 49 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2023-11-24 21:58:47,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:47,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-24 21:58:47,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:48,282 INFO L124 PetriNetUnfolderBase]: 856/1680 cut-off events. [2023-11-24 21:58:48,282 INFO L125 PetriNetUnfolderBase]: For 6852/6857 co-relation queries the response was YES. [2023-11-24 21:58:48,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6438 conditions, 1680 events. 856/1680 cut-off events. For 6852/6857 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10962 event pairs, 161 based on Foata normal form. 30/1679 useless extension candidates. Maximal degree in co-relation 6400. Up to 639 conditions per place. [2023-11-24 21:58:48,303 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 43 selfloop transitions, 22 changer transitions 30/108 dead transitions. [2023-11-24 21:58:48,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 970 flow [2023-11-24 21:58:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:58:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:58:48,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2023-11-24 21:58:48,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205128205128205 [2023-11-24 21:58:48,306 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 242 transitions. [2023-11-24 21:58:48,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 242 transitions. [2023-11-24 21:58:48,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:48,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 242 transitions. [2023-11-24 21:58:48,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 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) [2023-11-24 21:58:48,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-24 21:58:48,310 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-24 21:58:48,310 INFO L175 Difference]: Start difference. First operand has 83 places, 49 transitions, 356 flow. Second operand 10 states and 242 transitions. [2023-11-24 21:58:48,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 970 flow [2023-11-24 21:58:48,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 866 flow, removed 42 selfloop flow, removed 16 redundant places. [2023-11-24 21:58:48,357 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 521 flow [2023-11-24 21:58:48,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=521, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2023-11-24 21:58:48,360 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2023-11-24 21:58:48,360 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 521 flow [2023-11-24 21:58:48,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2023-11-24 21:58:48,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:48,361 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] [2023-11-24 21:58:48,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:58:48,362 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)] === [2023-11-24 21:58:48,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash -466107990, now seen corresponding path program 1 times [2023-11-24 21:58:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:48,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470357747] [2023-11-24 21:58:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470357747] [2023-11-24 21:58:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470357747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:48,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:58:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912824299] [2023-11-24 21:58:48,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:48,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:58:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:58:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:58:48,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2023-11-24 21:58:48,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2023-11-24 21:58:48,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:48,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2023-11-24 21:58:48,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:48,960 INFO L124 PetriNetUnfolderBase]: 680/1549 cut-off events. [2023-11-24 21:58:48,960 INFO L125 PetriNetUnfolderBase]: For 6221/6344 co-relation queries the response was YES. [2023-11-24 21:58:48,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 1549 events. 680/1549 cut-off events. For 6221/6344 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11546 event pairs, 102 based on Foata normal form. 70/1546 useless extension candidates. Maximal degree in co-relation 5539. Up to 482 conditions per place. [2023-11-24 21:58:48,978 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 25 selfloop transitions, 5 changer transitions 24/78 dead transitions. [2023-11-24 21:58:48,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 688 flow [2023-11-24 21:58:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:58:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:58:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2023-11-24 21:58:48,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6495726495726496 [2023-11-24 21:58:48,980 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2023-11-24 21:58:48,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2023-11-24 21:58:48,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:48,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2023-11-24 21:58:48,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2023-11-24 21:58:48,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-24 21:58:48,985 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-24 21:58:48,985 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 521 flow. Second operand 6 states and 152 transitions. [2023-11-24 21:58:48,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 688 flow [2023-11-24 21:58:49,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 666 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-24 21:58:49,006 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 345 flow [2023-11-24 21:58:49,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2023-11-24 21:58:49,010 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-11-24 21:58:49,011 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 345 flow [2023-11-24 21:58:49,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2023-11-24 21:58:49,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:49,012 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] [2023-11-24 21:58:49,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:58:49,013 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)] === [2023-11-24 21:58:49,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1423916052, now seen corresponding path program 1 times [2023-11-24 21:58:49,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:49,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135171601] [2023-11-24 21:58:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:49,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:49,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:49,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135171601] [2023-11-24 21:58:49,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135171601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:49,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:49,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:58:49,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310482994] [2023-11-24 21:58:49,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:49,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:58:49,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:49,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:58:49,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:58:49,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-24 21:58:49,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2023-11-24 21:58:49,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:49,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-24 21:58:49,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:49,423 INFO L124 PetriNetUnfolderBase]: 572/1210 cut-off events. [2023-11-24 21:58:49,424 INFO L125 PetriNetUnfolderBase]: For 1559/1617 co-relation queries the response was YES. [2023-11-24 21:58:49,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1210 events. 572/1210 cut-off events. For 1559/1617 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7782 event pairs, 123 based on Foata normal form. 78/1220 useless extension candidates. Maximal degree in co-relation 2960. Up to 470 conditions per place. [2023-11-24 21:58:49,439 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 26 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-24 21:58:49,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 441 flow [2023-11-24 21:58:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:58:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:58:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2023-11-24 21:58:49,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:58:49,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2023-11-24 21:58:49,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2023-11-24 21:58:49,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:49,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2023-11-24 21:58:49,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2023-11-24 21:58:49,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2023-11-24 21:58:49,448 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2023-11-24 21:58:49,449 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 345 flow. Second operand 4 states and 117 transitions. [2023-11-24 21:58:49,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 441 flow [2023-11-24 21:58:49,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 396 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-24 21:58:49,461 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 338 flow [2023-11-24 21:58:49,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2023-11-24 21:58:49,462 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-11-24 21:58:49,463 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 338 flow [2023-11-24 21:58:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2023-11-24 21:58:49,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:49,463 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] [2023-11-24 21:58:49,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:58:49,464 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)] === [2023-11-24 21:58:49,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash 184498351, now seen corresponding path program 1 times [2023-11-24 21:58:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089525171] [2023-11-24 21:58:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:49,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:49,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:49,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089525171] [2023-11-24 21:58:49,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089525171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:49,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:49,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:58:49,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454037780] [2023-11-24 21:58:49,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:49,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:58:49,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:58:49,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:58:49,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-24 21:58:49,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2023-11-24 21:58:49,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:49,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-24 21:58:49,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:49,868 INFO L124 PetriNetUnfolderBase]: 455/953 cut-off events. [2023-11-24 21:58:49,868 INFO L125 PetriNetUnfolderBase]: For 848/1040 co-relation queries the response was YES. [2023-11-24 21:58:49,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2579 conditions, 953 events. 455/953 cut-off events. For 848/1040 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5516 event pairs, 35 based on Foata normal form. 81/974 useless extension candidates. Maximal degree in co-relation 2549. Up to 404 conditions per place. [2023-11-24 21:58:49,879 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 29 selfloop transitions, 8 changer transitions 4/70 dead transitions. [2023-11-24 21:58:49,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 483 flow [2023-11-24 21:58:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:58:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:58:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2023-11-24 21:58:49,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7589743589743589 [2023-11-24 21:58:49,882 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 148 transitions. [2023-11-24 21:58:49,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 148 transitions. [2023-11-24 21:58:49,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:49,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 148 transitions. [2023-11-24 21:58:49,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2023-11-24 21:58:49,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2023-11-24 21:58:49,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2023-11-24 21:58:49,884 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 338 flow. Second operand 5 states and 148 transitions. [2023-11-24 21:58:49,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 483 flow [2023-11-24 21:58:49,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 468 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-24 21:58:49,891 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 372 flow [2023-11-24 21:58:49,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-11-24 21:58:49,892 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2023-11-24 21:58:49,892 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 372 flow [2023-11-24 21:58:49,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2023-11-24 21:58:49,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:58:49,893 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] [2023-11-24 21:58:49,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:58:49,893 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)] === [2023-11-24 21:58:49,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:58:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -679929847, now seen corresponding path program 1 times [2023-11-24 21:58:49,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:58:49,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573426369] [2023-11-24 21:58:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:58:49,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:58:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:58:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:58:50,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:58:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573426369] [2023-11-24 21:58:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573426369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:58:50,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:58:50,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:58:50,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551316656] [2023-11-24 21:58:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:58:50,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:58:50,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:58:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:58:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:58:50,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-24 21:58:50,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2023-11-24 21:58:50,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:58:50,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-24 21:58:50,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:58:50,265 INFO L124 PetriNetUnfolderBase]: 359/729 cut-off events. [2023-11-24 21:58:50,265 INFO L125 PetriNetUnfolderBase]: For 1431/1803 co-relation queries the response was YES. [2023-11-24 21:58:50,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 729 events. 359/729 cut-off events. For 1431/1803 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4060 event pairs, 25 based on Foata normal form. 59/736 useless extension candidates. Maximal degree in co-relation 2359. Up to 356 conditions per place. [2023-11-24 21:58:50,270 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-11-24 21:58:50,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 489 flow [2023-11-24 21:58:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:58:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:58:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2023-11-24 21:58:50,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-24 21:58:50,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 169 transitions. [2023-11-24 21:58:50,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 169 transitions. [2023-11-24 21:58:50,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:58:50,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 169 transitions. [2023-11-24 21:58:50,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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) [2023-11-24 21:58:50,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-24 21:58:50,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-24 21:58:50,276 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 372 flow. Second operand 6 states and 169 transitions. [2023-11-24 21:58:50,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 489 flow [2023-11-24 21:58:50,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 465 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-24 21:58:50,281 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2023-11-24 21:58:50,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2023-11-24 21:58:50,283 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-11-24 21:58:50,283 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2023-11-24 21:58:50,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2023-11-24 21:58:50,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-24 21:58:50,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-24 21:58:50,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-24 21:58:50,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-24 21:58:50,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:58:50,288 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:58:50,292 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:58:50,293 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:58:50,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:58:50 BasicIcfg [2023-11-24 21:58:50,302 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:58:50,303 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:58:50,303 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:58:50,303 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:58:50,304 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:58:42" (3/4) ... [2023-11-24 21:58:50,306 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:58:50,310 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:58:50,310 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:58:50,310 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-24 21:58:50,315 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-24 21:58:50,316 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-24 21:58:50,316 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:58:50,316 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:58:50,397 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:58:50,398 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:58:50,398 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:58:50,399 INFO L158 Benchmark]: Toolchain (without parser) took 9183.36ms. Allocated memory was 148.9MB in the beginning and 371.2MB in the end (delta: 222.3MB). Free memory was 117.5MB in the beginning and 109.6MB in the end (delta: 7.8MB). Peak memory consumption was 231.6MB. Max. memory is 16.1GB. [2023-11-24 21:58:50,399 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:58:50,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 675.81ms. Allocated memory is still 148.9MB. Free memory was 117.0MB in the beginning and 96.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:58:50,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.85ms. Allocated memory is still 148.9MB. Free memory was 96.5MB in the beginning and 94.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:58:50,400 INFO L158 Benchmark]: Boogie Preprocessor took 84.81ms. Allocated memory is still 148.9MB. Free memory was 94.4MB in the beginning and 91.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:58:50,401 INFO L158 Benchmark]: RCFGBuilder took 672.33ms. Allocated memory is still 148.9MB. Free memory was 91.9MB in the beginning and 113.9MB in the end (delta: -22.0MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2023-11-24 21:58:50,401 INFO L158 Benchmark]: TraceAbstraction took 7568.96ms. Allocated memory was 148.9MB in the beginning and 371.2MB in the end (delta: 222.3MB). Free memory was 113.1MB in the beginning and 114.9MB in the end (delta: -1.8MB). Peak memory consumption was 222.1MB. Max. memory is 16.1GB. [2023-11-24 21:58:50,402 INFO L158 Benchmark]: Witness Printer took 95.28ms. Allocated memory is still 371.2MB. Free memory was 114.9MB in the beginning and 109.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:58:50,404 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 675.81ms. Allocated memory is still 148.9MB. Free memory was 117.0MB in the beginning and 96.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.85ms. Allocated memory is still 148.9MB. Free memory was 96.5MB in the beginning and 94.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.81ms. Allocated memory is still 148.9MB. Free memory was 94.4MB in the beginning and 91.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 672.33ms. Allocated memory is still 148.9MB. Free memory was 91.9MB in the beginning and 113.9MB in the end (delta: -22.0MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7568.96ms. Allocated memory was 148.9MB in the beginning and 371.2MB in the end (delta: 222.3MB). Free memory was 113.1MB in the beginning and 114.9MB in the end (delta: -1.8MB). Peak memory consumption was 222.1MB. Max. memory is 16.1GB. * Witness Printer took 95.28ms. Allocated memory is still 371.2MB. Free memory was 114.9MB in the beginning and 109.6MB 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, 64 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: 7.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 394 mSDsluCounter, 317 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 216 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 851 IncrementalHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 101 mSDtfsCounter, 851 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=521occurred in iteration=5, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 744 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! [2023-11-24 21:58:50,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d48051ab-a224-4a85-a7f5-99274567aadb/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE