./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:52:30,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:52:31,032 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:52:31,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:52:31,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:52:31,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:52:31,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:52:31,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:52:31,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:52:31,072 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:52:31,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:52:31,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:52:31,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:52:31,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:52:31,076 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:52:31,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:52:31,077 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:52:31,078 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:52:31,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:52:31,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:52:31,080 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:52:31,081 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:52:31,082 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:52:31,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:52:31,090 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:52:31,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:52:31,092 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:52:31,092 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:52:31,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:52:31,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:52:31,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:52:31,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:52:31,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:31,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:52:31,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:52:31,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:52:31,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:52:31,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:52:31,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:52:31,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:52:31,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:52:31,099 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 [2023-11-24 21:52:31,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:52:31,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:52:31,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:52:31,435 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:52:31,436 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:52:31,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-24 21:52:34,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:52:34,949 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:52:34,950 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-24 21:52:34,979 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/data/763085fe1/5efaec06f82f4b099030b5d3b3ccbf92/FLAG5aafa274c [2023-11-24 21:52:34,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/data/763085fe1/5efaec06f82f4b099030b5d3b3ccbf92 [2023-11-24 21:52:35,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:52:35,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:52:35,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:35,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:52:35,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:52:35,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:34" (1/1) ... [2023-11-24 21:52:35,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556f372c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35, skipping insertion in model container [2023-11-24 21:52:35,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:34" (1/1) ... [2023-11-24 21:52:35,071 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:52:35,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:35,630 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:52:35,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:35,797 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:52:35,806 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:52:35,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35 WrapperNode [2023-11-24 21:52:35,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:35,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:35,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:52:35,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:52:35,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:35,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:35,924 INFO L138 Inliner]: procedures = 355, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2023-11-24 21:52:35,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:35,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:52:35,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:52:35,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:52:35,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:35,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:35,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:36,011 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 2, 5, 8, 2]. 42 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 0, 5, 8, 0]. The 2 writes are split as follows [0, 1, 0, 0, 1]. [2023-11-24 21:52:36,014 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:36,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:36,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:36,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:36,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:36,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:36,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:52:36,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:52:36,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:52:36,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:52:36,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (1/1) ... [2023-11-24 21:52:36,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:52:36,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:52:36,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:52:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-24 21:52:36,191 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-24 21:52:36,191 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-24 21:52:36,191 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-24 21:52:36,192 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-24 21:52:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:52:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:52:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:52:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:52:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:52:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:52:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:52:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:52:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:52:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:52:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:52:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:52:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:52:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:52:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:52:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:52:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:52:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:52:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:52:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:52:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:52:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:52:36,204 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:52:36,548 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:52:36,550 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:52:36,806 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:52:36,945 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:52:36,945 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:52:36,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:36 BoogieIcfgContainer [2023-11-24 21:52:36,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:52:36,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:52:36,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:52:36,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:52:36,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:52:34" (1/3) ... [2023-11-24 21:52:36,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b40f976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:36, skipping insertion in model container [2023-11-24 21:52:36,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:35" (2/3) ... [2023-11-24 21:52:36,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b40f976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:36, skipping insertion in model container [2023-11-24 21:52:36,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:36" (3/3) ... [2023-11-24 21:52:36,956 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_true.i [2023-11-24 21:52:36,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:52:36,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-24 21:52:36,977 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:52:37,025 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 21:52:37,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 106 flow [2023-11-24 21:52:37,088 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2023-11-24 21:52:37,088 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:52:37,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 2/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-11-24 21:52:37,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 106 flow [2023-11-24 21:52:37,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 98 flow [2023-11-24 21:52:37,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:52:37,119 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@88e4d83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:52:37,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 21:52:37,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:52:37,124 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:52:37,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:52:37,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:37,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:52:37,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:37,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:37,136 INFO L85 PathProgramCache]: Analyzing trace with hash 8803, now seen corresponding path program 1 times [2023-11-24 21:52:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:37,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141707059] [2023-11-24 21:52:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:37,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:37,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:37,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141707059] [2023-11-24 21:52:37,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141707059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:37,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:37,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:37,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839075615] [2023-11-24 21:52:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:37,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:37,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:37,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:37,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:37,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2023-11-24 21:52:37,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:37,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:37,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2023-11-24 21:52:37,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:38,079 INFO L124 PetriNetUnfolderBase]: 228/476 cut-off events. [2023-11-24 21:52:38,081 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-24 21:52:38,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 476 events. 228/476 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2059 event pairs, 228 based on Foata normal form. 31/489 useless extension candidates. Maximal degree in co-relation 853. Up to 406 conditions per place. [2023-11-24 21:52:38,091 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 21 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-11-24 21:52:38,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 134 flow [2023-11-24 21:52:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-24 21:52:38,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2023-11-24 21:52:38,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-24 21:52:38,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-24 21:52:38,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:38,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-24 21:52:38,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,117 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 98 flow. Second operand 3 states and 78 transitions. [2023-11-24 21:52:38,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 134 flow [2023-11-24 21:52:38,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 126 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:52:38,124 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 84 flow [2023-11-24 21:52:38,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-24 21:52:38,129 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-11-24 21:52:38,130 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 84 flow [2023-11-24 21:52:38,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:38,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:52:38,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:52:38,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:38,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash 8804, now seen corresponding path program 1 times [2023-11-24 21:52:38,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:38,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135844591] [2023-11-24 21:52:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:38,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:38,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:38,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135844591] [2023-11-24 21:52:38,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135844591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:38,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:38,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:38,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739563000] [2023-11-24 21:52:38,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:38,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:38,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:38,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:38,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 46 [2023-11-24 21:52:38,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2023-11-24 21:52:38,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:38,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 46 [2023-11-24 21:52:38,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:38,498 INFO L124 PetriNetUnfolderBase]: 143/332 cut-off events. [2023-11-24 21:52:38,498 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 21:52:38,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 332 events. 143/332 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1357 event pairs, 143 based on Foata normal form. 51/366 useless extension candidates. Maximal degree in co-relation 609. Up to 270 conditions per place. [2023-11-24 21:52:38,506 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 19 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-24 21:52:38,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 122 flow [2023-11-24 21:52:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-24 21:52:38,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2023-11-24 21:52:38,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-24 21:52:38,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-24 21:52:38,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:38,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-24 21:52:38,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,526 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 84 flow. Second operand 3 states and 80 transitions. [2023-11-24 21:52:38,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 122 flow [2023-11-24 21:52:38,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:38,531 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 80 flow [2023-11-24 21:52:38,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-24 21:52:38,536 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2023-11-24 21:52:38,537 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 80 flow [2023-11-24 21:52:38,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2023-11-24 21:52:38,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:38,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:38,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:52:38,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:38,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash 262492334, now seen corresponding path program 1 times [2023-11-24 21:52:38,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:38,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106540792] [2023-11-24 21:52:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:38,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106540792] [2023-11-24 21:52:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106540792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:38,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791339616] [2023-11-24 21:52:38,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:38,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:38,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:38,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:38,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 46 [2023-11-24 21:52:38,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:38,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 46 [2023-11-24 21:52:38,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:38,843 INFO L124 PetriNetUnfolderBase]: 143/325 cut-off events. [2023-11-24 21:52:38,843 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 21:52:38,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 325 events. 143/325 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1313 event pairs, 143 based on Foata normal form. 15/330 useless extension candidates. Maximal degree in co-relation 602. Up to 270 conditions per place. [2023-11-24 21:52:38,847 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 19 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-11-24 21:52:38,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 118 flow [2023-11-24 21:52:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-24 21:52:38,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2023-11-24 21:52:38,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-24 21:52:38,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-24 21:52:38,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:38,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-24 21:52:38,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,852 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 80 flow. Second operand 3 states and 80 transitions. [2023-11-24 21:52:38,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 118 flow [2023-11-24 21:52:38,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:38,854 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 76 flow [2023-11-24 21:52:38,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-24 21:52:38,855 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -9 predicate places. [2023-11-24 21:52:38,856 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 76 flow [2023-11-24 21:52:38,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:38,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:38,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:52:38,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:38,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash 262492333, now seen corresponding path program 1 times [2023-11-24 21:52:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:38,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715927345] [2023-11-24 21:52:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:38,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:38,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715927345] [2023-11-24 21:52:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715927345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:38,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:38,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:38,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078927305] [2023-11-24 21:52:38,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:38,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:38,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2023-11-24 21:52:38,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:38,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:38,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2023-11-24 21:52:38,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:39,055 INFO L124 PetriNetUnfolderBase]: 156/343 cut-off events. [2023-11-24 21:52:39,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:52:39,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 343 events. 156/343 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1378 event pairs, 156 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 648. Up to 298 conditions per place. [2023-11-24 21:52:39,059 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-24 21:52:39,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 118 flow [2023-11-24 21:52:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-24 21:52:39,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2023-11-24 21:52:39,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-24 21:52:39,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-24 21:52:39,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:39,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-24 21:52:39,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,064 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 76 flow. Second operand 3 states and 76 transitions. [2023-11-24 21:52:39,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 118 flow [2023-11-24 21:52:39,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:39,066 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 72 flow [2023-11-24 21:52:39,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-24 21:52:39,067 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -11 predicate places. [2023-11-24 21:52:39,067 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 72 flow [2023-11-24 21:52:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:39,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:39,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:52:39,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:39,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1919468625, now seen corresponding path program 1 times [2023-11-24 21:52:39,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:39,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235518083] [2023-11-24 21:52:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:39,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235518083] [2023-11-24 21:52:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235518083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:39,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:39,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:39,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374407868] [2023-11-24 21:52:39,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:39,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:39,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:39,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:39,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 46 [2023-11-24 21:52:39,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:39,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 46 [2023-11-24 21:52:39,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:39,408 INFO L124 PetriNetUnfolderBase]: 192/400 cut-off events. [2023-11-24 21:52:39,411 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 21:52:39,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 400 events. 192/400 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1712 event pairs, 91 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 768. Up to 208 conditions per place. [2023-11-24 21:52:39,415 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 38 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2023-11-24 21:52:39,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 210 flow [2023-11-24 21:52:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:52:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:52:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2023-11-24 21:52:39,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6391304347826087 [2023-11-24 21:52:39,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 147 transitions. [2023-11-24 21:52:39,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 147 transitions. [2023-11-24 21:52:39,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:39,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 147 transitions. [2023-11-24 21:52:39,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,423 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,424 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 72 flow. Second operand 5 states and 147 transitions. [2023-11-24 21:52:39,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 210 flow [2023-11-24 21:52:39,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:39,427 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 116 flow [2023-11-24 21:52:39,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-24 21:52:39,430 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-11-24 21:52:39,431 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 116 flow [2023-11-24 21:52:39,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:39,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:39,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:52:39,432 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:39,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:39,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1944865159, now seen corresponding path program 1 times [2023-11-24 21:52:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:39,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526407220] [2023-11-24 21:52:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:39,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:39,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:39,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526407220] [2023-11-24 21:52:39,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526407220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:39,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:39,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:39,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694530312] [2023-11-24 21:52:39,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:39,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:39,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:39,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:39,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:39,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2023-11-24 21:52:39,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:39,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2023-11-24 21:52:39,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:39,666 INFO L124 PetriNetUnfolderBase]: 96/246 cut-off events. [2023-11-24 21:52:39,666 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-24 21:52:39,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 246 events. 96/246 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 946 event pairs, 31 based on Foata normal form. 18/264 useless extension candidates. Maximal degree in co-relation 499. Up to 135 conditions per place. [2023-11-24 21:52:39,669 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 24 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-11-24 21:52:39,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 184 flow [2023-11-24 21:52:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-24 21:52:39,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2023-11-24 21:52:39,671 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-24 21:52:39,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-24 21:52:39,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:39,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-24 21:52:39,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,673 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 116 flow. Second operand 3 states and 93 transitions. [2023-11-24 21:52:39,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 184 flow [2023-11-24 21:52:39,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-24 21:52:39,677 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 118 flow [2023-11-24 21:52:39,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-24 21:52:39,678 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2023-11-24 21:52:39,679 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 118 flow [2023-11-24 21:52:39,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:39,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:39,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:39,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:52:39,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:39,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:39,680 INFO L85 PathProgramCache]: Analyzing trace with hash -39981281, now seen corresponding path program 1 times [2023-11-24 21:52:39,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:39,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596523072] [2023-11-24 21:52:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:39,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:52:39,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:52:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:52:39,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:52:39,776 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:52:39,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-24 21:52:39,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-24 21:52:39,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-24 21:52:39,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-24 21:52:39,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-24 21:52:39,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-24 21:52:39,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-24 21:52:39,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-24 21:52:39,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-24 21:52:39,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-24 21:52:39,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-24 21:52:39,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-24 21:52:39,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-24 21:52:39,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:52:39,788 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:39,794 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:52:39,794 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:52:39,841 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-24 21:52:39,843 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-24 21:52:39,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-24 21:52:39,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-24 21:52:39,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:52:39 BasicIcfg [2023-11-24 21:52:39,857 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:52:39,858 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:52:39,858 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:52:39,858 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:52:39,858 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:36" (3/4) ... [2023-11-24 21:52:39,860 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 21:52:39,861 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:52:39,867 INFO L158 Benchmark]: Toolchain (without parser) took 4860.26ms. Allocated memory was 155.2MB in the beginning and 232.8MB in the end (delta: 77.6MB). Free memory was 110.1MB in the beginning and 105.3MB in the end (delta: 4.7MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. [2023-11-24 21:52:39,869 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 155.2MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:52:39,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 803.41ms. Allocated memory is still 155.2MB. Free memory was 110.1MB in the beginning and 71.1MB in the end (delta: 39.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-24 21:52:39,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.88ms. Allocated memory is still 155.2MB. Free memory was 71.1MB in the beginning and 68.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:52:39,872 INFO L158 Benchmark]: Boogie Preprocessor took 165.39ms. Allocated memory was 155.2MB in the beginning and 192.9MB in the end (delta: 37.7MB). Free memory was 68.2MB in the beginning and 160.3MB in the end (delta: -92.1MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2023-11-24 21:52:39,873 INFO L158 Benchmark]: RCFGBuilder took 853.54ms. Allocated memory is still 192.9MB. Free memory was 160.3MB in the beginning and 123.7MB in the end (delta: 36.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-24 21:52:39,873 INFO L158 Benchmark]: TraceAbstraction took 2908.07ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 122.6MB in the beginning and 106.4MB in the end (delta: 16.2MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2023-11-24 21:52:39,874 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 232.8MB. Free memory was 106.4MB in the beginning and 105.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:52:39,878 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 155.2MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 803.41ms. Allocated memory is still 155.2MB. Free memory was 110.1MB in the beginning and 71.1MB in the end (delta: 39.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.88ms. Allocated memory is still 155.2MB. Free memory was 71.1MB in the beginning and 68.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 165.39ms. Allocated memory was 155.2MB in the beginning and 192.9MB in the end (delta: 37.7MB). Free memory was 68.2MB in the beginning and 160.3MB in the end (delta: -92.1MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * RCFGBuilder took 853.54ms. Allocated memory is still 192.9MB. Free memory was 160.3MB in the beginning and 123.7MB in the end (delta: 36.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2908.07ms. Allocated memory was 192.9MB in the beginning and 232.8MB in the end (delta: 39.8MB). Free memory was 122.6MB in the beginning and 106.4MB in the end (delta: 16.2MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 232.8MB. Free memory was 106.4MB in the beginning and 105.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, cond={4:0}, g=0, mut={3:0}, t1={5:0}, t2={6:0}] [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, t1={5:0}, t2={6:0}] [L1366] 2 g = 0 VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1358] CALL 1 __VERIFIER_assert(g == 1) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L18] 1 __assert_fail ("0", "13-privatized_67-pthread_cond_wait_true.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1371]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1375]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1377]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 68 locations, 13 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: 2.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 206 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 286 IncrementalHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 21 mSDtfsCounter, 286 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=6, InterpolantAutomatonStates: 20, 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, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 21:52:39,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:52:42,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:52:42,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:52:42,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:52:42,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:52:42,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:52:42,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:52:42,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:52:42,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:52:42,688 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:52:42,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:52:42,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:52:42,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:52:42,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:52:42,692 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:52:42,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:52:42,693 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:52:42,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:52:42,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:52:42,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:52:42,695 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:52:42,695 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:52:42,696 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:52:42,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:52:42,697 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:52:42,697 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:52:42,698 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:52:42,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:52:42,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:52:42,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:52:42,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:52:42,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:52:42,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:52:42,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:52:42,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:42,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:52:42,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:52:42,702 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:52:42,702 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:52:42,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:52:42,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:52:42,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:52:42,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:52:42,703 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:52:42,703 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 [2023-11-24 21:52:43,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:52:43,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:52:43,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:52:43,109 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:52:43,110 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:52:43,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-24 21:52:46,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:52:46,728 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:52:46,728 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-24 21:52:46,755 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/data/b00fd7bc9/3970fc0a05a849a6b91f514bf0451686/FLAG250f5ad87 [2023-11-24 21:52:46,769 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/data/b00fd7bc9/3970fc0a05a849a6b91f514bf0451686 [2023-11-24 21:52:46,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:52:46,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:52:46,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:46,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:52:46,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:52:46,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:46" (1/1) ... [2023-11-24 21:52:46,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40872f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:46, skipping insertion in model container [2023-11-24 21:52:46,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:46" (1/1) ... [2023-11-24 21:52:46,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:52:47,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:47,488 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:52:47,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:47,696 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:52:47,705 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:52:47,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47 WrapperNode [2023-11-24 21:52:47,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:47,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:47,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:52:47,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:52:47,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,825 INFO L138 Inliner]: procedures = 359, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2023-11-24 21:52:47,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:47,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:52:47,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:52:47,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:52:47,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,872 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 2, 8, 2]. 42 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 5, 0, 8, 0]. The 2 writes are split as follows [0, 0, 1, 0, 1]. [2023-11-24 21:52:47,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:52:47,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:52:47,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:52:47,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:52:47,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (1/1) ... [2023-11-24 21:52:47,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:47,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:52:47,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:52:48,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:52:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:52:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:52:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:52:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:52:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:52:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-24 21:52:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-24 21:52:48,032 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-24 21:52:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-24 21:52:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-24 21:52:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:52:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:52:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:52:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:52:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:52:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:52:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:52:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:52:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:52:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:52:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:52:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:52:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-24 21:52:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-24 21:52:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-24 21:52:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-24 21:52:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-24 21:52:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:52:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:52:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:52:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:52:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:52:48,046 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:52:48,478 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:52:48,481 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:52:48,789 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:52:49,033 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:52:49,033 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:52:49,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:49 BoogieIcfgContainer [2023-11-24 21:52:49,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:52:49,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:52:49,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:52:49,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:52:49,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:52:46" (1/3) ... [2023-11-24 21:52:49,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40674271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:49, skipping insertion in model container [2023-11-24 21:52:49,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:47" (2/3) ... [2023-11-24 21:52:49,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40674271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:49, skipping insertion in model container [2023-11-24 21:52:49,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:49" (3/3) ... [2023-11-24 21:52:49,044 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_true.i [2023-11-24 21:52:49,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:52:49,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-24 21:52:49,065 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:52:49,117 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 21:52:49,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 106 flow [2023-11-24 21:52:49,218 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2023-11-24 21:52:49,219 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:52:49,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 2/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-11-24 21:52:49,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 106 flow [2023-11-24 21:52:49,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 98 flow [2023-11-24 21:52:49,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:52:49,245 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@38884044, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:52:49,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 21:52:49,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:52:49,249 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:52:49,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:52:49,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:49,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:52:49,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:49,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash 8867, now seen corresponding path program 1 times [2023-11-24 21:52:49,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:49,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238785700] [2023-11-24 21:52:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:49,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:49,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:49,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:52:49,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:52:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:49,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:52:49,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:49,615 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:52:49,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-24 21:52:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:49,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:49,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238785700] [2023-11-24 21:52:49,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238785700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:49,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:49,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:49,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308393382] [2023-11-24 21:52:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:49,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:49,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:49,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:49,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2023-11-24 21:52:49,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:49,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:49,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2023-11-24 21:52:49,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:49,994 INFO L124 PetriNetUnfolderBase]: 228/483 cut-off events. [2023-11-24 21:52:49,995 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-24 21:52:49,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 483 events. 228/483 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2126 event pairs, 228 based on Foata normal form. 31/495 useless extension candidates. Maximal degree in co-relation 860. Up to 406 conditions per place. [2023-11-24 21:52:50,002 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 21 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-11-24 21:52:50,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 134 flow [2023-11-24 21:52:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-24 21:52:50,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2023-11-24 21:52:50,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-24 21:52:50,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-24 21:52:50,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:50,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-24 21:52:50,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,033 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 98 flow. Second operand 3 states and 78 transitions. [2023-11-24 21:52:50,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 134 flow [2023-11-24 21:52:50,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 126 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:52:50,042 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 84 flow [2023-11-24 21:52:50,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-24 21:52:50,049 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-11-24 21:52:50,050 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 84 flow [2023-11-24 21:52:50,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:50,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:52:50,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:52:50,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:50,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:50,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash 8868, now seen corresponding path program 1 times [2023-11-24 21:52:50,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:50,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106174876] [2023-11-24 21:52:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:50,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:50,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:50,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:52:50,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:52:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:50,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:52:50,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:50,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:52:50,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-24 21:52:50,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-24 21:52:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:50,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:50,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:50,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106174876] [2023-11-24 21:52:50,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106174876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:50,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:50,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:50,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629390111] [2023-11-24 21:52:50,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:50,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:50,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 46 [2023-11-24 21:52:50,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2023-11-24 21:52:50,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:50,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 46 [2023-11-24 21:52:50,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:50,682 INFO L124 PetriNetUnfolderBase]: 143/336 cut-off events. [2023-11-24 21:52:50,683 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 21:52:50,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 336 events. 143/336 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1375 event pairs, 143 based on Foata normal form. 51/369 useless extension candidates. Maximal degree in co-relation 613. Up to 270 conditions per place. [2023-11-24 21:52:50,687 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 19 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-24 21:52:50,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 122 flow [2023-11-24 21:52:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-24 21:52:50,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2023-11-24 21:52:50,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-24 21:52:50,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-24 21:52:50,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:50,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-24 21:52:50,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:50,694 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 84 flow. Second operand 3 states and 80 transitions. [2023-11-24 21:52:50,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 122 flow [2023-11-24 21:52:50,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:50,696 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 80 flow [2023-11-24 21:52:50,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-24 21:52:50,697 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2023-11-24 21:52:50,698 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 80 flow [2023-11-24 21:52:50,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2023-11-24 21:52:50,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:50,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:50,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-24 21:52:50,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:50,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:50,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash 264399021, now seen corresponding path program 1 times [2023-11-24 21:52:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:50,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594865662] [2023-11-24 21:52:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:50,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:50,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:52:50,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:52:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:52:51,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:51,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:52:51,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:52:51,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:52:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:51,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:51,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:51,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594865662] [2023-11-24 21:52:51,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594865662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:51,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:51,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:51,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551141425] [2023-11-24 21:52:51,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:51,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:51,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:51,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2023-11-24 21:52:51,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:51,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2023-11-24 21:52:51,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:51,258 INFO L124 PetriNetUnfolderBase]: 156/353 cut-off events. [2023-11-24 21:52:51,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:52:51,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 353 events. 156/353 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1434 event pairs, 156 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 658. Up to 298 conditions per place. [2023-11-24 21:52:51,262 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 21 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-11-24 21:52:51,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 122 flow [2023-11-24 21:52:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-24 21:52:51,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2023-11-24 21:52:51,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-24 21:52:51,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-24 21:52:51,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:51,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-24 21:52:51,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,267 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 80 flow. Second operand 3 states and 76 transitions. [2023-11-24 21:52:51,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 122 flow [2023-11-24 21:52:51,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:51,269 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 76 flow [2023-11-24 21:52:51,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-24 21:52:51,270 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -9 predicate places. [2023-11-24 21:52:51,271 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 76 flow [2023-11-24 21:52:51,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:51,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:52:51,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-24 21:52:51,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:51,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:51,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash 264399022, now seen corresponding path program 1 times [2023-11-24 21:52:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:51,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738957240] [2023-11-24 21:52:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:51,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:51,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:51,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:52:51,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:52:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:52:51,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:51,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:52:51,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:52:51,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:52:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:51,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:51,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:51,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738957240] [2023-11-24 21:52:51,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738957240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:51,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:51,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:52:51,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284362185] [2023-11-24 21:52:51,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:51,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:51,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:51,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 46 [2023-11-24 21:52:51,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:51,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 46 [2023-11-24 21:52:51,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:51,851 INFO L124 PetriNetUnfolderBase]: 143/322 cut-off events. [2023-11-24 21:52:51,851 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 21:52:51,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 322 events. 143/322 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1304 event pairs, 143 based on Foata normal form. 15/333 useless extension candidates. Maximal degree in co-relation 599. Up to 270 conditions per place. [2023-11-24 21:52:51,854 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 19 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-24 21:52:51,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 114 flow [2023-11-24 21:52:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-24 21:52:51,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2023-11-24 21:52:51,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-24 21:52:51,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-24 21:52:51,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:51,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-24 21:52:51,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,859 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 76 flow. Second operand 3 states and 80 transitions. [2023-11-24 21:52:51,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 114 flow [2023-11-24 21:52:51,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:51,861 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 72 flow [2023-11-24 21:52:51,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-24 21:52:51,862 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -11 predicate places. [2023-11-24 21:52:51,862 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 72 flow [2023-11-24 21:52:51,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:51,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:51,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:51,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:52:52,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:52,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:52,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:52,069 INFO L85 PathProgramCache]: Analyzing trace with hash 288617363, now seen corresponding path program 1 times [2023-11-24 21:52:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:52,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851516840] [2023-11-24 21:52:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:52,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:52,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:52:52,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:52:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:52,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:52:52,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:52,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:52,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:52,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851516840] [2023-11-24 21:52:52,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851516840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:52,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:52,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:52:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129543453] [2023-11-24 21:52:52,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:52,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:52:52,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:52:52,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:52:52,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2023-11-24 21:52:52,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:52,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2023-11-24 21:52:52,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:52,459 INFO L124 PetriNetUnfolderBase]: 170/378 cut-off events. [2023-11-24 21:52:52,459 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 21:52:52,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 378 events. 170/378 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1678 event pairs, 91 based on Foata normal form. 18/395 useless extension candidates. Maximal degree in co-relation 705. Up to 214 conditions per place. [2023-11-24 21:52:52,464 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 37 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-11-24 21:52:52,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 204 flow [2023-11-24 21:52:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:52:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:52:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2023-11-24 21:52:52,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2023-11-24 21:52:52,469 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 150 transitions. [2023-11-24 21:52:52,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 150 transitions. [2023-11-24 21:52:52,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:52,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 150 transitions. [2023-11-24 21:52:52,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,477 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,477 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 72 flow. Second operand 5 states and 150 transitions. [2023-11-24 21:52:52,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 204 flow [2023-11-24 21:52:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:52:52,481 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 108 flow [2023-11-24 21:52:52,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-24 21:52:52,484 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2023-11-24 21:52:52,485 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 108 flow [2023-11-24 21:52:52,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:52,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:52,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:52:52,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:52,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:52,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:52,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1138023811, now seen corresponding path program 1 times [2023-11-24 21:52:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:52,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246792906] [2023-11-24 21:52:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:52,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:52,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:52,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:52:52,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:52:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:52,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:52:52,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:52:52,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-24 21:52:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:52,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:52:52,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:52:52,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246792906] [2023-11-24 21:52:52,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246792906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:52,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:52,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:52:52,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007225390] [2023-11-24 21:52:52,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:52,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:52:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:52:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:52:52,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:52:52,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2023-11-24 21:52:52,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:52,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:52:52,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2023-11-24 21:52:52,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:52:53,016 INFO L124 PetriNetUnfolderBase]: 96/246 cut-off events. [2023-11-24 21:52:53,016 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-24 21:52:53,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 246 events. 96/246 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 966 event pairs, 31 based on Foata normal form. 18/263 useless extension candidates. Maximal degree in co-relation 499. Up to 135 conditions per place. [2023-11-24 21:52:53,019 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 24 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2023-11-24 21:52:53,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 171 flow [2023-11-24 21:52:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:52:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:52:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-24 21:52:53,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2023-11-24 21:52:53,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-24 21:52:53,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-24 21:52:53,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:52:53,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-24 21:52:53,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,023 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 108 flow. Second operand 3 states and 93 transitions. [2023-11-24 21:52:53,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 171 flow [2023-11-24 21:52:53,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 169 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-24 21:52:53,027 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 107 flow [2023-11-24 21:52:53,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-24 21:52:53,028 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2023-11-24 21:52:53,028 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 107 flow [2023-11-24 21:52:53,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:52:53,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:52:53,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:53,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-24 21:52:53,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:53,233 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:52:53,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1448895715, now seen corresponding path program 1 times [2023-11-24 21:52:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:52:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416075085] [2023-11-24 21:52:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:53,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:53,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:52:53,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:52:53,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:52:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:52:53,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:52:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:52:53,613 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-24 21:52:53,613 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:52:53,615 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-24 21:52:53,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-24 21:52:53,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-24 21:52:53,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-24 21:52:53,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-24 21:52:53,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-24 21:52:53,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-24 21:52:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-24 21:52:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-24 21:52:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-24 21:52:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-24 21:52:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-24 21:52:53,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-24 21:52:53,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:52:53,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:52:53,826 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:52:53,831 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:52:53,831 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:52:53,875 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-24 21:52:53,877 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-24 21:52:53,878 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-24 21:52:53,879 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-24 21:52:53,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:52:53 BasicIcfg [2023-11-24 21:52:53,886 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:52:53,887 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:52:53,887 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:52:53,887 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:52:53,888 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:49" (3/4) ... [2023-11-24 21:52:53,890 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 21:52:53,891 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:52:53,892 INFO L158 Benchmark]: Toolchain (without parser) took 7118.34ms. Allocated memory was 79.7MB in the beginning and 125.8MB in the end (delta: 46.1MB). Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 70.4kB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. [2023-11-24 21:52:53,892 INFO L158 Benchmark]: CDTParser took 1.24ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:52:53,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 928.71ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 52.4MB in the beginning and 76.5MB in the end (delta: -24.1MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2023-11-24 21:52:53,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.97ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 73.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:52:53,893 INFO L158 Benchmark]: Boogie Preprocessor took 90.68ms. Allocated memory is still 104.9MB. Free memory was 73.6MB in the beginning and 69.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:52:53,894 INFO L158 Benchmark]: RCFGBuilder took 1115.78ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 75.5MB in the end (delta: -6.5MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2023-11-24 21:52:53,895 INFO L158 Benchmark]: TraceAbstraction took 4850.25ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 74.8MB in the beginning and 52.5MB in the end (delta: 22.2MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2023-11-24 21:52:53,899 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 125.8MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:52:53,902 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 55.4MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 928.71ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 52.4MB in the beginning and 76.5MB in the end (delta: -24.1MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.97ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 73.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.68ms. Allocated memory is still 104.9MB. Free memory was 73.6MB in the beginning and 69.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1115.78ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 75.5MB in the end (delta: -6.5MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4850.25ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 74.8MB in the beginning and 52.5MB in the end (delta: 22.2MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 125.8MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=200, argc=200, argv={202:201}, cond={4:0}, g=0, mut={3:0}, t1={6:0}, t2={5:0}] [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=200, argc=200, argv={202:201}, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1366] 2 g = 0 VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1358] CALL 1 __VERIFIER_assert(g == 1) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L18] 1 __assert_fail ("0", "13-privatized_67-pthread_cond_wait_true.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1371]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1375]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1377]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 68 locations, 13 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: 4.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 286 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 10 mSDtfsCounter, 286 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=5, InterpolantAutomatonStates: 20, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 6 NumberOfNonLiveVariables, 442 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 21:52:53,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d200e7-65d7-4971-987c-c18bd892b373/bin/uautomizer-verify-NlZe1sFDwI/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: UNKNOWN: Overapproximated counterexample