./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_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_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/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_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/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_d8e66e63-147d-4daf-bcd5-898cdd8641fb/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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:48:05,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:48:05,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:48:05,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:48:05,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:48:05,764 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:48:05,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:48:05,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:48:05,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:48:05,766 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:48:05,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:48:05,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:48:05,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:48:05,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:48:05,767 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:48:05,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:48:05,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:48:05,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:48:05,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:48:05,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:48:05,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:48:05,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:48:05,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:48:05,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:48:05,769 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:48:05,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:48:05,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:48:05,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:48:05,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:48:05,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:48:05,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:48:05,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:48:05,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:48:05,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:48:05,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:48:05,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:48:05,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:48:05,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:48:05,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:48:05,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:48:05,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:48:05,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:48:05,771 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_d8e66e63-147d-4daf-bcd5-898cdd8641fb/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 -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2024-11-13 13:48:06,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:48:06,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:48:06,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:48:06,170 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:48:06,171 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:48:06,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i Unable to find full path for "g++" [2024-11-13 13:48:08,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:48:08,900 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:48:08,905 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-13 13:48:08,924 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/data/c80b74b65/adbd1a4a50894ef6b60629e95448c4fe/FLAG8f2473e66 [2024-11-13 13:48:08,948 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/data/c80b74b65/adbd1a4a50894ef6b60629e95448c4fe [2024-11-13 13:48:08,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:48:08,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:48:08,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:48:08,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:48:08,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:48:08,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:48:08" (1/1) ... [2024-11-13 13:48:08,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a68856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:08, skipping insertion in model container [2024-11-13 13:48:08,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:48:08" (1/1) ... [2024-11-13 13:48:09,005 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:48:09,625 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_d8e66e63-147d-4daf-bcd5-898cdd8641fb/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2024-11-13 13:48:09,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:48:09,735 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:48:09,808 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_d8e66e63-147d-4daf-bcd5-898cdd8641fb/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2024-11-13 13:48:09,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:48:09,879 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:48:09,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09 WrapperNode [2024-11-13 13:48:09,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:48:09,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:48:09,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:48:09,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:48:09,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:09,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:09,933 INFO L138 Inliner]: procedures = 174, calls = 48, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 141 [2024-11-13 13:48:09,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:48:09,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:48:09,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:48:09,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:48:09,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:09,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:09,955 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:09,982 INFO L175 MemorySlicer]: Split 26 memory accesses to 5 slices as follows [2, 8, 2, 8, 6]. 31 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 8, 0, 8, 1]. The 3 writes are split as follows [0, 0, 1, 0, 2]. [2024-11-13 13:48:09,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:09,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:10,011 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:10,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:10,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:10,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:10,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:48:10,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:48:10,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:48:10,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:48:10,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (1/1) ... [2024-11-13 13:48:10,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:48:10,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:10,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:48:10,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 13:48:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 13:48:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 13:48:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:48:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:48:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 13:48:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 13:48:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:48:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:48:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 13:48:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 13:48:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 13:48:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 13:48:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:48:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:48:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 13:48:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 13:48:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 13:48:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 13:48:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:48:10,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:48:10,109 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 13:48:10,360 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:48:10,363 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:48:10,862 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:48:10,863 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:48:11,775 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:48:11,776 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-13 13:48:11,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:48:11 BoogieIcfgContainer [2024-11-13 13:48:11,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:48:11,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:48:11,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:48:11,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:48:11,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:48:08" (1/3) ... [2024-11-13 13:48:11,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59406659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:48:11, skipping insertion in model container [2024-11-13 13:48:11,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:09" (2/3) ... [2024-11-13 13:48:11,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59406659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:48:11, skipping insertion in model container [2024-11-13 13:48:11,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:48:11" (3/3) ... [2024-11-13 13:48:11,796 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2024-11-13 13:48:11,815 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:48:11,817 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_12-ptr_racefree.i that has 2 procedures, 39 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-13 13:48:11,818 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:48:11,889 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-13 13:48:11,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 49 transitions, 105 flow [2024-11-13 13:48:12,005 INFO L124 PetriNetUnfolderBase]: 13/69 cut-off events. [2024-11-13 13:48:12,010 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 13:48:12,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 13/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 224 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2024-11-13 13:48:12,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 49 transitions, 105 flow [2024-11-13 13:48:12,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 47 transitions, 98 flow [2024-11-13 13:48:12,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:48:12,054 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;@10499284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:48:12,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:48:12,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:48:12,071 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-13 13:48:12,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:48:12,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:12,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:48:12,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:48:12,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:12,079 INFO L85 PathProgramCache]: Analyzing trace with hash 987894756, now seen corresponding path program 1 times [2024-11-13 13:48:12,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:12,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420573297] [2024-11-13 13:48:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:48:12,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:48:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:48:12,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:48:12,479 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:48:12,480 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-13 13:48:12,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 13:48:12,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:48:12,483 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-13 13:48:12,490 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:48:12,490 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 13:48:12,537 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 13:48:12,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 74 transitions, 164 flow [2024-11-13 13:48:12,641 INFO L124 PetriNetUnfolderBase]: 24/121 cut-off events. [2024-11-13 13:48:12,642 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 13:48:12,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 121 events. 24/121 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 489 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2024-11-13 13:48:12,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 74 transitions, 164 flow [2024-11-13 13:48:12,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 74 transitions, 164 flow [2024-11-13 13:48:12,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:48:12,653 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;@10499284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:48:12,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:48:12,680 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:48:12,680 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-11-13 13:48:12,680 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:48:12,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:12,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:12,680 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:48:12,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1250659086, now seen corresponding path program 1 times [2024-11-13 13:48:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:12,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555606825] [2024-11-13 13:48:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:12,927 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 13:48:12,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:12,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555606825] [2024-11-13 13:48:12,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555606825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:12,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:12,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:48:12,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681051713] [2024-11-13 13:48:12,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:12,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:48:12,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:48:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:48:12,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-11-13 13:48:12,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 74 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 13:48:12,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:12,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-11-13 13:48:12,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:14,369 INFO L124 PetriNetUnfolderBase]: 2932/5765 cut-off events. [2024-11-13 13:48:14,370 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-13 13:48:14,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10537 conditions, 5765 events. 2932/5765 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 40676 event pairs, 2600 based on Foata normal form. 1412/6754 useless extension candidates. Maximal degree in co-relation 7065. Up to 4697 conditions per place. [2024-11-13 13:48:14,412 INFO L140 encePairwiseOnDemand]: 56/74 looper letters, 39 selfloop transitions, 2 changer transitions 11/71 dead transitions. [2024-11-13 13:48:14,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 258 flow [2024-11-13 13:48:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:48:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:48:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-13 13:48:14,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-11-13 13:48:14,436 INFO L175 Difference]: Start difference. First operand has 62 places, 74 transitions, 164 flow. Second operand 3 states and 135 transitions. [2024-11-13 13:48:14,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 258 flow [2024-11-13 13:48:14,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 258 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:48:14,452 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 118 flow [2024-11-13 13:48:14,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2024-11-13 13:48:14,462 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2024-11-13 13:48:14,462 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 118 flow [2024-11-13 13:48:14,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 13:48:14,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:14,463 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-13 13:48:14,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:48:14,463 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:48:14,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1148061032, now seen corresponding path program 1 times [2024-11-13 13:48:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:14,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389906954] [2024-11-13 13:48:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:14,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:48:14,575 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:48:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:48:14,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:48:14,649 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:48:14,649 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-13 13:48:14,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 13:48:14,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:48:14,650 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:48:14,651 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:48:14,651 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 13:48:14,707 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 13:48:14,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 99 transitions, 225 flow [2024-11-13 13:48:14,742 INFO L124 PetriNetUnfolderBase]: 38/184 cut-off events. [2024-11-13 13:48:14,742 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-13 13:48:14,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 184 events. 38/184 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 789 event pairs, 1 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 132. Up to 12 conditions per place. [2024-11-13 13:48:14,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 99 transitions, 225 flow [2024-11-13 13:48:14,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 99 transitions, 225 flow [2024-11-13 13:48:14,750 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:48:14,751 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;@10499284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:48:14,752 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:48:14,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:48:14,763 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-11-13 13:48:14,763 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 13:48:14,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:14,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:14,765 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:48:14,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:14,765 INFO L85 PathProgramCache]: Analyzing trace with hash 86185586, now seen corresponding path program 1 times [2024-11-13 13:48:14,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:14,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533680539] [2024-11-13 13:48:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:14,936 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 13:48:14,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533680539] [2024-11-13 13:48:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533680539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:14,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:14,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:48:14,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597540597] [2024-11-13 13:48:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:14,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:48:14,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:48:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:48:14,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 99 [2024-11-13 13:48:14,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 13:48:14,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:14,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 99 [2024-11-13 13:48:14,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:24,950 INFO L124 PetriNetUnfolderBase]: 51087/83322 cut-off events. [2024-11-13 13:48:24,951 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2024-11-13 13:48:25,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155578 conditions, 83322 events. 51087/83322 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 711702 event pairs, 47355 based on Foata normal form. 23132/101410 useless extension candidates. Maximal degree in co-relation 75615. Up to 71288 conditions per place. [2024-11-13 13:48:25,315 INFO L140 encePairwiseOnDemand]: 75/99 looper letters, 50 selfloop transitions, 2 changer transitions 12/90 dead transitions. [2024-11-13 13:48:25,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 90 transitions, 331 flow [2024-11-13 13:48:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:48:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:48:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-11-13 13:48:25,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2024-11-13 13:48:25,318 INFO L175 Difference]: Start difference. First operand has 82 places, 99 transitions, 225 flow. Second operand 3 states and 174 transitions. [2024-11-13 13:48:25,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 90 transitions, 331 flow [2024-11-13 13:48:25,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:48:25,327 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 162 flow [2024-11-13 13:48:25,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-11-13 13:48:25,328 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 3 predicate places. [2024-11-13 13:48:25,328 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 162 flow [2024-11-13 13:48:25,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 13:48:25,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:25,329 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:25,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:48:25,330 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:48:25,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -774634175, now seen corresponding path program 1 times [2024-11-13 13:48:25,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:25,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617872574] [2024-11-13 13:48:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:25,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617872574] [2024-11-13 13:48:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617872574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395616431] [2024-11-13 13:48:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:25,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:25,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:25,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:25,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:48:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:25,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:48:25,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:25,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:26,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395616431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:26,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:26,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-13 13:48:26,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765368509] [2024-11-13 13:48:26,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:26,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:48:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:26,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:48:26,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:48:26,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 99 [2024-11-13 13:48:26,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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 13:48:26,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:26,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 99 [2024-11-13 13:48:26,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:28,207 INFO L124 PetriNetUnfolderBase]: 10250/17343 cut-off events. [2024-11-13 13:48:28,207 INFO L125 PetriNetUnfolderBase]: For 4289/4289 co-relation queries the response was YES. [2024-11-13 13:48:28,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33985 conditions, 17343 events. 10250/17343 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 127626 event pairs, 2024 based on Foata normal form. 1463/18604 useless extension candidates. Maximal degree in co-relation 3157. Up to 9922 conditions per place. [2024-11-13 13:48:28,298 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 97 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-13 13:48:28,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 123 transitions, 476 flow [2024-11-13 13:48:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:48:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:48:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 272 transitions. [2024-11-13 13:48:28,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2024-11-13 13:48:28,301 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 162 flow. Second operand 6 states and 272 transitions. [2024-11-13 13:48:28,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 123 transitions, 476 flow [2024-11-13 13:48:28,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 123 transitions, 472 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 13:48:28,307 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 152 flow [2024-11-13 13:48:28,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-11-13 13:48:28,308 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2024-11-13 13:48:28,308 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 152 flow [2024-11-13 13:48:28,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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 13:48:28,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:28,313 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-13 13:48:28,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:48:28,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8e66e63-147d-4daf-bcd5-898cdd8641fb/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:28,514 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:48:28,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash 549776291, now seen corresponding path program 1 times [2024-11-13 13:48:28,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:28,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962227101] [2024-11-13 13:48:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:28,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:48:28,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:48:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:48:28,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:48:28,675 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:48:28,675 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-13 13:48:28,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 13:48:28,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:48:28,676 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 13:48:28,677 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:48:28,677 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 13:48:28,740 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 13:48:28,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 124 transitions, 288 flow [2024-11-13 13:48:28,780 INFO L124 PetriNetUnfolderBase]: 60/271 cut-off events. [2024-11-13 13:48:28,780 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-13 13:48:28,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 271 events. 60/271 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1233 event pairs, 6 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 208. Up to 32 conditions per place. [2024-11-13 13:48:28,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 124 transitions, 288 flow [2024-11-13 13:48:28,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 124 transitions, 288 flow [2024-11-13 13:48:28,791 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:48:28,792 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;@10499284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:48:28,793 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 13:48:28,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:48:28,803 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-11-13 13:48:28,803 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 13:48:28,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:28,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:28,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:48:28,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:28,804 INFO L85 PathProgramCache]: Analyzing trace with hash -799009678, now seen corresponding path program 1 times [2024-11-13 13:48:28,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:28,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127228947] [2024-11-13 13:48:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:28,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:28,961 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 13:48:28,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:28,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127228947] [2024-11-13 13:48:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127228947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:28,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:28,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:48:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613186315] [2024-11-13 13:48:28,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:28,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:48:28,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:48:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:48:28,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 124 [2024-11-13 13:48:28,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:48:28,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:28,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 124 [2024-11-13 13:48:28,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand