./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd --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 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:13:52,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:13:52,863 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:13:52,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:13:52,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:13:52,932 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:13:52,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:13:52,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:13:52,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:13:52,936 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:13:52,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:13:52,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:13:52,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:13:52,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:13:52,940 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:13:52,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:13:52,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:13:52,941 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:13:52,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:13:52,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:13:52,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:13:52,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:13:52,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:13:52,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:13:52,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:13:52,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:13:52,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:13:52,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:13:52,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:13:52,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:13:52,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:13:52,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:13:52,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:13:52,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:13:52,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:13:52,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:13:52,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:13:52,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:13:52,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:13:52,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:13:52,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:13:52,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:13:52,944 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd 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 -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 [2024-11-13 15:13:53,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:13:53,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:13:53,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:13:53,319 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:13:53,320 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:13:53,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i Unable to find full path for "g++" [2024-11-13 15:13:55,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:13:56,253 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:13:56,254 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2024-11-13 15:13:56,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/data/83787f3f2/afa0dc49b0e84a078226100eaf30fe1d/FLAG1b6cb1f86 [2024-11-13 15:13:56,305 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/data/83787f3f2/afa0dc49b0e84a078226100eaf30fe1d [2024-11-13 15:13:56,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:13:56,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:13:56,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:13:56,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:13:56,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:13:56,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:56,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4a1264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56, skipping insertion in model container [2024-11-13 15:13:56,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:56,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:13:56,787 WARN L250 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_eb06a496-9e62-4bcd-a085-a5ff86e5be35/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2024-11-13 15:13:56,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:13:56,841 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:13:56,886 WARN L250 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_eb06a496-9e62-4bcd-a085-a5ff86e5be35/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2024-11-13 15:13:56,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:13:56,944 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:13:56,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56 WrapperNode [2024-11-13 15:13:56,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:13:56,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:13:56,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:13:56,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:13:56,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:56,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:56,994 INFO L138 Inliner]: procedures = 174, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 125 [2024-11-13 15:13:56,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:13:56,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:13:56,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:13:56,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:13:57,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,010 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,030 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 8, 8, 6]. 33 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 8, 8, 1]. The 2 writes are split as follows [0, 0, 0, 2]. [2024-11-13 15:13:57,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:13:57,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:13:57,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:13:57,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:13:57,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (1/1) ... [2024-11-13 15:13:57,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:13:57,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:13:57,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:13:57,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:13:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 15:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 15:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:13:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 15:13:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 15:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 15:13:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 15:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 15:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:13:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:13:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:13:57,159 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:13:57,341 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:13:57,343 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:13:57,778 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:13:57,779 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:13:58,564 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:13:58,564 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-13 15:13:58,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:13:58 BoogieIcfgContainer [2024-11-13 15:13:58,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:13:58,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:13:58,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:13:58,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:13:58,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:13:56" (1/3) ... [2024-11-13 15:13:58,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f396c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:13:58, skipping insertion in model container [2024-11-13 15:13:58,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:13:56" (2/3) ... [2024-11-13 15:13:58,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f396c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:13:58, skipping insertion in model container [2024-11-13 15:13:58,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:13:58" (3/3) ... [2024-11-13 15:13:58,579 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2024-11-13 15:13:58,601 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:13:58,604 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_46-escape_racefree.i that has 2 procedures, 37 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 15:13:58,604 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:13:58,677 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-13 15:13:58,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 45 transitions, 97 flow [2024-11-13 15:13:58,787 INFO L124 PetriNetUnfolderBase]: 9/44 cut-off events. [2024-11-13 15:13:58,792 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:13:58,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 44 events. 9/44 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 40. Up to 3 conditions per place. [2024-11-13 15:13:58,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 45 transitions, 97 flow [2024-11-13 15:13:58,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 42 transitions, 87 flow [2024-11-13 15:13:58,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:13:58,843 INFO L333 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, 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;@44fb617d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:13:58,843 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 15:13:58,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:13:58,871 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-11-13 15:13:58,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:13:58,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:13:58,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:13:58,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:13:58,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:13:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash -456750310, now seen corresponding path program 1 times [2024-11-13 15:13:58,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:13:58,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307600324] [2024-11-13 15:13:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:13:58,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:13:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:13:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:13:59,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:13:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307600324] [2024-11-13 15:13:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307600324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:13:59,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:13:59,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:13:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958173827] [2024-11-13 15:13:59,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:13:59,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:13:59,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:13:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:13:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:13:59,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-11-13 15:13:59,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-13 15:13:59,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:13:59,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-11-13 15:13:59,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:14:00,003 INFO L124 PetriNetUnfolderBase]: 92/283 cut-off events. [2024-11-13 15:14:00,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:14:00,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 283 events. 92/283 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1196 event pairs, 30 based on Foata normal form. 60/333 useless extension candidates. Maximal degree in co-relation 485. Up to 118 conditions per place. [2024-11-13 15:14:00,010 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 18 selfloop transitions, 2 changer transitions 23/52 dead transitions. [2024-11-13 15:14:00,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 187 flow [2024-11-13 15:14:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:14:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:14:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-11-13 15:14:00,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5511111111111111 [2024-11-13 15:14:00,035 INFO L175 Difference]: Start difference. First operand has 37 places, 42 transitions, 87 flow. Second operand 5 states and 124 transitions. [2024-11-13 15:14:00,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 187 flow [2024-11-13 15:14:00,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:14:00,046 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 66 flow [2024-11-13 15:14:00,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2024-11-13 15:14:00,053 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-11-13 15:14:00,054 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 66 flow [2024-11-13 15:14:00,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-13 15:14:00,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:14:00,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:14:00,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:14:00,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:14:00,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:14:00,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1224769451, now seen corresponding path program 1 times [2024-11-13 15:14:00,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:14:00,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852812575] [2024-11-13 15:14:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:14:00,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:14:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:14:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:14:00,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:14:00,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852812575] [2024-11-13 15:14:00,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852812575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:14:00,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:14:00,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:14:00,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256768310] [2024-11-13 15:14:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:14:00,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:14:00,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:14:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:14:00,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:14:00,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-11-13 15:14:00,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-13 15:14:00,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:14:00,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-11-13 15:14:00,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:14:00,769 INFO L124 PetriNetUnfolderBase]: 15/70 cut-off events. [2024-11-13 15:14:00,769 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:14:00,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 70 events. 15/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 3 based on Foata normal form. 9/79 useless extension candidates. Maximal degree in co-relation 124. Up to 36 conditions per place. [2024-11-13 15:14:00,771 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 14 selfloop transitions, 4 changer transitions 1/29 dead transitions. [2024-11-13 15:14:00,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 110 flow [2024-11-13 15:14:00,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:14:00,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:14:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-13 15:14:00,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-13 15:14:00,775 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 66 flow. Second operand 4 states and 81 transitions. [2024-11-13 15:14:00,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 110 flow [2024-11-13 15:14:00,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 102 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-13 15:14:00,779 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 66 flow [2024-11-13 15:14:00,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-11-13 15:14:00,781 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-11-13 15:14:00,782 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 66 flow [2024-11-13 15:14:00,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-13 15:14:00,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:14:00,783 INFO L204 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] [2024-11-13 15:14:00,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:14:00,785 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:14:00,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:14:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash -677085768, now seen corresponding path program 1 times [2024-11-13 15:14:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:14:00,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68464049] [2024-11-13 15:14:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:14:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:14:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:14:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:14:01,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:14:01,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68464049] [2024-11-13 15:14:01,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68464049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:14:01,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:14:01,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:14:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657863897] [2024-11-13 15:14:01,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:14:01,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:14:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:14:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:14:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:14:01,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-11-13 15:14:01,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:14:01,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:14:01,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-11-13 15:14:01,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:14:01,900 INFO L124 PetriNetUnfolderBase]: 15/65 cut-off events. [2024-11-13 15:14:01,900 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 15:14:01,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 65 events. 15/65 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 2 based on Foata normal form. 2/67 useless extension candidates. Maximal degree in co-relation 121. Up to 18 conditions per place. [2024-11-13 15:14:01,902 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-11-13 15:14:01,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 130 flow [2024-11-13 15:14:01,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:14:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:14:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-11-13 15:14:01,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-11-13 15:14:01,905 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 66 flow. Second operand 8 states and 129 transitions. [2024-11-13 15:14:01,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 130 flow [2024-11-13 15:14:01,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:14:01,906 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-11-13 15:14:01,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-11-13 15:14:01,911 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-13 15:14:01,911 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-11-13 15:14:01,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:14:01,915 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-13 15:14:01,915 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-11-13 15:14:01,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:14:01,916 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 15:14:01,923 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 15:14:01,923 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:14:01,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:14:01 BasicIcfg [2024-11-13 15:14:01,935 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:14:01,936 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:14:01,936 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:14:01,936 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:14:01,937 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:13:58" (3/4) ... [2024-11-13 15:14:01,942 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 15:14:01,946 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-13 15:14:01,952 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 96 nodes and edges [2024-11-13 15:14:01,952 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-13 15:14:01,952 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 15:14:01,953 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 15:14:02,068 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 15:14:02,068 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 15:14:02,068 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:14:02,069 INFO L158 Benchmark]: Toolchain (without parser) took 5758.90ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 117.0MB in the beginning and 211.7MB in the end (delta: -94.7MB). Peak memory consumption was 189.2MB. Max. memory is 16.1GB. [2024-11-13 15:14:02,070 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 167.8MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:14:02,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.45ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 95.7MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:14:02,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.52ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:14:02,071 INFO L158 Benchmark]: Boogie Preprocessor took 63.97ms. Allocated memory is still 142.6MB. Free memory was 93.6MB in the beginning and 91.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:14:02,072 INFO L158 Benchmark]: RCFGBuilder took 1505.86ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 104.7MB in the end (delta: -13.6MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2024-11-13 15:14:02,073 INFO L158 Benchmark]: TraceAbstraction took 3365.43ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 103.9MB in the beginning and 216.4MB in the end (delta: -112.5MB). Peak memory consumption was 179.5MB. Max. memory is 16.1GB. [2024-11-13 15:14:02,073 INFO L158 Benchmark]: Witness Printer took 132.85ms. Allocated memory is still 427.8MB. Free memory was 216.4MB in the beginning and 211.7MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:14:02,075 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 167.8MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.45ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 95.7MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.52ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.97ms. Allocated memory is still 142.6MB. Free memory was 93.6MB in the beginning and 91.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1505.86ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 104.7MB in the end (delta: -13.6MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3365.43ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 103.9MB in the beginning and 216.4MB in the end (delta: -112.5MB). Peak memory consumption was 179.5MB. Max. memory is 16.1GB. * Witness Printer took 132.85ms. Allocated memory is still 427.8MB. Free memory was 216.4MB in the beginning and 211.7MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 691]: 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 3 procedures, 56 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 178 IncrementalHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 1 mSDtfsCounter, 178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 1.7s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 344 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2024-11-13 15:14:02,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb06a496-9e62-4bcd-a085-a5ff86e5be35/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE