./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme --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 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:56:27,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:56:27,268 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:56:27,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:56:27,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:56:27,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:56:27,308 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:56:27,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:56:27,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:56:27,311 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:56:27,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:56:27,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:56:27,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:56:27,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:56:27,315 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:56:27,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:56:27,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:56:27,317 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:56:27,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:56:27,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:56:27,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:56:27,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:56:27,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:56:27,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:56:27,322 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:56:27,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:56:27,323 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:56:27,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:56:27,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:56:27,325 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:56:27,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:56:27,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:27,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:56:27,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:56:27,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:56:27,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:56:27,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:56:27,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:56:27,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:56:27,330 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:56:27,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:56:27,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:56:27,331 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_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 [2023-11-26 11:56:27,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:56:27,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:56:27,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:56:27,729 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:56:27,730 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:56:27,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2023-11-26 11:56:31,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:56:31,410 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:56:31,411 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2023-11-26 11:56:31,436 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/data/9cf550ee0/947343cb9a4d4cae9cf33c8846ce0d10/FLAG3015a07a5 [2023-11-26 11:56:31,459 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/data/9cf550ee0/947343cb9a4d4cae9cf33c8846ce0d10 [2023-11-26 11:56:31,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:56:31,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:56:31,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:31,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:56:31,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:56:31,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:31" (1/1) ... [2023-11-26 11:56:31,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135938c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:31, skipping insertion in model container [2023-11-26 11:56:31,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:31" (1/1) ... [2023-11-26 11:56:31,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:56:32,075 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_57485591-8080-47ea-9601-617208e28ad9/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2023-11-26 11:56:32,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:32,139 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:56:32,178 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_57485591-8080-47ea-9601-617208e28ad9/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2023-11-26 11:56:32,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:32,236 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:56:32,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32 WrapperNode [2023-11-26 11:56:32,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:32,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:32,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:56:32,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:56:32,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,315 INFO L138 Inliner]: procedures = 173, calls = 47, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 228 [2023-11-26 11:56:32,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:32,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:56:32,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:56:32,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:56:32,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,335 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,352 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 2, 5, 5, 2, 5]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 0, 5]. The 2 writes are split as follows [0, 1, 0, 0, 1, 0]. [2023-11-26 11:56:32,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:56:32,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:56:32,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:56:32,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:56:32,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:32,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:32,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:32,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57485591-8080-47ea-9601-617208e28ad9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:56:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:56:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:56:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:56:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:56:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:56:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:56:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-26 11:56:32,474 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-26 11:56:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:56:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:56:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:56:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:56:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:56:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:56:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:56:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:56:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:56:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-26 11:56:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-26 11:56:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:56:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:56:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:56:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:56:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:56:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:56:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:56:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:56:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:56:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:56:32,481 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:56:32,649 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:56:32,652 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:56:33,056 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:56:33,385 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:56:33,385 INFO L309 CfgBuilder]: Removed 24 assume(true) statements. [2023-11-26 11:56:33,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:33 BoogieIcfgContainer [2023-11-26 11:56:33,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:56:33,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:56:33,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:56:33,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:56:33,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:56:31" (1/3) ... [2023-11-26 11:56:33,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6ec44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:33, skipping insertion in model container [2023-11-26 11:56:33,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (2/3) ... [2023-11-26 11:56:33,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6ec44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:33, skipping insertion in model container [2023-11-26 11:56:33,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:33" (3/3) ... [2023-11-26 11:56:33,396 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-11-26 11:56:33,406 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:56:33,417 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:56:33,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:56:33,417 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:56:33,477 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 11:56:33,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 103 transitions, 226 flow [2023-11-26 11:56:33,583 INFO L124 PetriNetUnfolderBase]: 44/175 cut-off events. [2023-11-26 11:56:33,584 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 11:56:33,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 175 events. 44/175 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 795 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2023-11-26 11:56:33,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 103 transitions, 226 flow [2023-11-26 11:56:33,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 103 transitions, 226 flow [2023-11-26 11:56:33,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:56:33,616 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;@64459a76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:56:33,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 11:56:33,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:56:33,625 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-26 11:56:33,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:56:33,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:33,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:56:33,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 11:56:33,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash 232461161, now seen corresponding path program 1 times [2023-11-26 11:56:33,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:33,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4846558] [2023-11-26 11:56:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:33,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:33,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:33,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:33,875 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:56:33,877 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-26 11:56:33,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-26 11:56:33,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-26 11:56:33,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-26 11:56:33,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-26 11:56:33,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-26 11:56:33,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:56:33,882 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:56:33,894 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:56:33,895 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:56:33,986 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-26 11:56:34,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 191 transitions, 426 flow [2023-11-26 11:56:34,205 INFO L124 PetriNetUnfolderBase]: 153/531 cut-off events. [2023-11-26 11:56:34,205 INFO L125 PetriNetUnfolderBase]: For 72/83 co-relation queries the response was YES. [2023-11-26 11:56:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 531 events. 153/531 cut-off events. For 72/83 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3254 event pairs, 2 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 342. Up to 32 conditions per place. [2023-11-26 11:56:34,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 191 transitions, 426 flow [2023-11-26 11:56:34,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 191 transitions, 426 flow [2023-11-26 11:56:34,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:56:34,240 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;@64459a76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:56:34,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-26 11:56:34,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:56:34,254 INFO L124 PetriNetUnfolderBase]: 3/60 cut-off events. [2023-11-26 11:56:34,254 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-11-26 11:56:34,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:34,255 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-26 11:56:34,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-26 11:56:34,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash -569938691, now seen corresponding path program 1 times [2023-11-26 11:56:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:34,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069499831] [2023-11-26 11:56:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:34,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:34,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:34,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:34,419 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:56:34,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-26 11:56:34,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-26 11:56:34,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2023-11-26 11:56:34,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-26 11:56:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-26 11:56:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-26 11:56:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-11-26 11:56:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-11-26 11:56:34,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:56:34,426 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:56:34,427 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:56:34,427 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:56:34,542 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-26 11:56:34,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 279 transitions, 630 flow [2023-11-26 11:56:35,088 INFO L124 PetriNetUnfolderBase]: 516/1457 cut-off events. [2023-11-26 11:56:35,089 INFO L125 PetriNetUnfolderBase]: For 419/459 co-relation queries the response was YES. [2023-11-26 11:56:35,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 1457 events. 516/1457 cut-off events. For 419/459 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9911 event pairs, 32 based on Foata normal form. 0/1106 useless extension candidates. Maximal degree in co-relation 1052. Up to 192 conditions per place. [2023-11-26 11:56:35,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 279 transitions, 630 flow [2023-11-26 11:56:35,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 279 transitions, 630 flow [2023-11-26 11:56:35,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:56:35,167 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;@64459a76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:56:35,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-26 11:56:35,187 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:56:35,187 INFO L124 PetriNetUnfolderBase]: 12/135 cut-off events. [2023-11-26 11:56:35,188 INFO L125 PetriNetUnfolderBase]: For 22/30 co-relation queries the response was YES. [2023-11-26 11:56:35,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:35,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:35,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2023-11-26 11:56:35,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2099383212, now seen corresponding path program 1 times [2023-11-26 11:56:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:35,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44799980] [2023-11-26 11:56:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:35,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:35,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44799980] [2023-11-26 11:56:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44799980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:35,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:35,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:56:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648323936] [2023-11-26 11:56:35,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:35,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:35,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:35,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 279 [2023-11-26 11:56:35,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 279 transitions, 630 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:35,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:35,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 279 [2023-11-26 11:56:35,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand