./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.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_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/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_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/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_3b75dd32-a6f9-4478-b656-2a8771be4f29/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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:11,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:11,645 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:55:11,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:11,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:11,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:11,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:11,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:11,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:11,706 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:11,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:11,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:11,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:11,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:11,712 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:11,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:11,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:11,713 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:11,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:11,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:11,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:11,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:11,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:11,716 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:11,717 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:11,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:11,718 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:11,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:11,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:11,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:11,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:11,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:11,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:11,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:11,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:55:11,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:11,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:11,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:11,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:11,722 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:55:11,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:11,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:11,723 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_3b75dd32-a6f9-4478-b656-2a8771be4f29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2023-11-26 11:55:12,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:12,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:12,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:12,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:12,118 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:12,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2023-11-26 11:55:15,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:15,697 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:15,702 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2023-11-26 11:55:15,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/data/be7fe78b1/524d011e7bda462f9f04919c49319b25/FLAG288605eca [2023-11-26 11:55:15,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/data/be7fe78b1/524d011e7bda462f9f04919c49319b25 [2023-11-26 11:55:15,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:15,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:15,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:15,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:15,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:15,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c333e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15, skipping insertion in model container [2023-11-26 11:55:15,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:16,235 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_3b75dd32-a6f9-4478-b656-2a8771be4f29/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-11-26 11:55:16,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:16,293 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:16,348 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_3b75dd32-a6f9-4478-b656-2a8771be4f29/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-11-26 11:55:16,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:16,428 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:16,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16 WrapperNode [2023-11-26 11:55:16,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:16,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:16,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:16,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:16,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,502 INFO L138 Inliner]: procedures = 173, calls = 41, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 229 [2023-11-26 11:55:16,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:16,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:16,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:16,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:16,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,538 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 5, 5, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0]. The 2 writes are split as follows [0, 1, 0, 0, 1]. [2023-11-26 11:55:16,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:16,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:16,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:16,575 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:16,576 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:16,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:16,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:16,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b75dd32-a6f9-4478-b656-2a8771be4f29/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:55:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:55:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:55:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:55:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:55:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-26 11:55:16,653 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-26 11:55:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:55:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:55:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:55:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:55:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:55:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:55:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:55:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-26 11:55:16,654 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-26 11:55:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:55:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:55:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:55:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:55:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:55:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:55:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:55:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:16,664 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 11:55:16,828 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:16,830 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:17,159 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:17,449 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:17,449 INFO L309 CfgBuilder]: Removed 24 assume(true) statements. [2023-11-26 11:55:17,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:17 BoogieIcfgContainer [2023-11-26 11:55:17,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:17,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:17,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:17,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:17,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:15" (1/3) ... [2023-11-26 11:55:17,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1ef04b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:17, skipping insertion in model container [2023-11-26 11:55:17,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16" (2/3) ... [2023-11-26 11:55:17,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1ef04b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:17, skipping insertion in model container [2023-11-26 11:55:17,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:17" (3/3) ... [2023-11-26 11:55:17,459 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-11-26 11:55:17,468 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:55:17,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:17,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:55:17,480 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:55:17,539 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 11:55:17,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 103 transitions, 226 flow [2023-11-26 11:55:17,668 INFO L124 PetriNetUnfolderBase]: 44/175 cut-off events. [2023-11-26 11:55:17,668 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 11:55:17,675 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 800 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 11:55:17,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 103 transitions, 226 flow [2023-11-26 11:55:17,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 103 transitions, 226 flow [2023-11-26 11:55:17,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:17,697 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;@27ed8a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:17,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 11:55:17,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:55:17,705 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-26 11:55:17,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:55:17,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:17,706 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:55:17,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-26 11:55:17,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash 409961897, now seen corresponding path program 1 times [2023-11-26 11:55:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:17,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546998565] [2023-11-26 11:55:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:55:17,874 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:55:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:55:17,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:55:17,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:55:17,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-26 11:55:17,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-26 11:55:17,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-26 11:55:17,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-26 11:55:17,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-26 11:55:17,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-26 11:55:17,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:17,946 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:55:17,959 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:55:17,964 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:55:18,046 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-26 11:55:18,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 191 transitions, 426 flow [2023-11-26 11:55:18,218 INFO L124 PetriNetUnfolderBase]: 153/531 cut-off events. [2023-11-26 11:55:18,218 INFO L125 PetriNetUnfolderBase]: For 72/83 co-relation queries the response was YES. [2023-11-26 11:55:18,232 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 11:55:18,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 191 transitions, 426 flow [2023-11-26 11:55:18,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 191 transitions, 426 flow [2023-11-26 11:55:18,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:18,251 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;@27ed8a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:18,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-26 11:55:18,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:55:18,262 INFO L124 PetriNetUnfolderBase]: 3/60 cut-off events. [2023-11-26 11:55:18,262 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-11-26 11:55:18,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:18,263 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-26 11:55:18,263 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 11:55:18,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash 249752067, now seen corresponding path program 1 times [2023-11-26 11:55:18,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:18,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207802551] [2023-11-26 11:55:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:55:18,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:55:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:55:18,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:55:18,360 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:55:18,360 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-26 11:55:18,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-26 11:55:18,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2023-11-26 11:55:18,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-26 11:55:18,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-26 11:55:18,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-26 11:55:18,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-11-26 11:55:18,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-11-26 11:55:18,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:55:18,363 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:55:18,363 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:55:18,364 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:55:18,475 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-26 11:55:18,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 279 transitions, 630 flow [2023-11-26 11:55:18,980 INFO L124 PetriNetUnfolderBase]: 516/1457 cut-off events. [2023-11-26 11:55:18,980 INFO L125 PetriNetUnfolderBase]: For 419/459 co-relation queries the response was YES. [2023-11-26 11:55:18,999 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 9886 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 11:55:18,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 279 transitions, 630 flow [2023-11-26 11:55:19,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 279 transitions, 630 flow [2023-11-26 11:55:19,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:19,047 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;@27ed8a3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:19,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-26 11:55:19,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:55:19,067 INFO L124 PetriNetUnfolderBase]: 12/135 cut-off events. [2023-11-26 11:55:19,067 INFO L125 PetriNetUnfolderBase]: For 22/30 co-relation queries the response was YES. [2023-11-26 11:55:19,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:19,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:19,068 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 11:55:19,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash 418916564, now seen corresponding path program 1 times [2023-11-26 11:55:19,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:19,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983519403] [2023-11-26 11:55:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:19,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:19,314 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 11:55:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983519403] [2023-11-26 11:55:19,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983519403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:19,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:19,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119230749] [2023-11-26 11:55:19,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:19,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:19,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:19,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 279 [2023-11-26 11:55:19,371 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 11:55:19,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:19,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 279 [2023-11-26 11:55:19,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand