./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:43:05,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:43:06,029 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:43:06,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:43:06,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:43:06,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:43:06,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:43:06,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:43:06,062 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:43:06,063 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:43:06,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:43:06,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:43:06,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:43:06,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:43:06,065 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:43:06,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:43:06,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:43:06,067 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:43:06,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:43:06,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:43:06,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:43:06,074 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:43:06,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:43:06,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:43:06,075 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:43:06,075 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:43:06,075 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:43:06,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:43:06,076 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:43:06,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:43:06,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:43:06,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:43:06,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:43:06,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:43:06,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:43:06,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:43:06,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:43:06,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:43:06,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:43:06,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:43:06,079 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:43:06,080 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:43:06,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:43:06,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:43:06,080 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_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2023-11-28 20:43:06,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:43:06,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:43:06,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:43:06,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:43:06,329 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:43:06,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2023-11-28 20:43:09,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:43:09,329 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:43:09,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2023-11-28 20:43:09,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/data/14006ea76/d5f7de98d09341b4917e62f37c67a29c/FLAG3ae45ef3e [2023-11-28 20:43:09,354 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/data/14006ea76/d5f7de98d09341b4917e62f37c67a29c [2023-11-28 20:43:09,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:43:09,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:43:09,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:43:09,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:43:09,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:43:09,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c90feee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09, skipping insertion in model container [2023-11-28 20:43:09,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,417 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:43:09,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:43:09,729 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:43:09,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:43:09,806 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:43:09,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09 WrapperNode [2023-11-28 20:43:09,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:43:09,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:43:09,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:43:09,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:43:09,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,855 INFO L138 Inliner]: procedures = 169, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 150 [2023-11-28 20:43:09,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:43:09,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:43:09,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:43:09,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:43:09,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,886 INFO L175 MemorySlicer]: Split 18 memory accesses to 6 slices as follows [2, 1, 3, 8, 2, 2]. 44 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 0, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 0, 1, 1]. [2023-11-28 20:43:09,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:43:09,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:43:09,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:43:09,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:43:09,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (1/1) ... [2023-11-28 20:43:09,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:43:09,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:09,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:43:09,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:43:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:43:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:43:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:43:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:43:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 20:43:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-28 20:43:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-28 20:43:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-28 20:43:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-28 20:43:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-28 20:43:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:43:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:43:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:43:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:43:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 20:43:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-28 20:43:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 20:43:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:43:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:43:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:43:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-28 20:43:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-28 20:43:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-28 20:43:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-28 20:43:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-28 20:43:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-28 20:43:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:43:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:43:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:43:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:43:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 20:43:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-28 20:43:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 20:43:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:43:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:43:09,985 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:43:10,130 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:43:10,132 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:43:10,370 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:43:10,612 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:43:10,612 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 20:43:10,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:43:10 BoogieIcfgContainer [2023-11-28 20:43:10,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:43:10,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:43:10,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:43:10,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:43:10,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:43:09" (1/3) ... [2023-11-28 20:43:10,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4148793c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:43:10, skipping insertion in model container [2023-11-28 20:43:10,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:09" (2/3) ... [2023-11-28 20:43:10,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4148793c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:43:10, skipping insertion in model container [2023-11-28 20:43:10,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:43:10" (3/3) ... [2023-11-28 20:43:10,621 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2023-11-28 20:43:10,629 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 20:43:10,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:43:10,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-28 20:43:10,638 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:43:10,679 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 20:43:10,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 80 flow [2023-11-28 20:43:10,734 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-11-28 20:43:10,734 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 20:43:10,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 2/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-28 20:43:10,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 80 flow [2023-11-28 20:43:10,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 67 flow [2023-11-28 20:43:10,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:43:10,755 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fee5948, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:43:10,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-28 20:43:10,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:43:10,766 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-11-28 20:43:10,766 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 20:43:10,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:43:10,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:10,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-28 20:43:10,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:10,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1409541236, now seen corresponding path program 1 times [2023-11-28 20:43:10,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:10,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725657809] [2023-11-28 20:43:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:10,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:10,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:43:10,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073424967] [2023-11-28 20:43:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:10,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:10,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:10,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:43:10,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:43:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:11,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:43:11,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:43:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:43:11,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:43:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:11,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725657809] [2023-11-28 20:43:11,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:43:11,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073424967] [2023-11-28 20:43:11,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073424967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:43:11,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:43:11,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:43:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089572127] [2023-11-28 20:43:11,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:43:11,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:43:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:11,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:43:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:43:11,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-28 20:43:11,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-11-28 20:43:11,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:43:11,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-28 20:43:11,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:43:11,393 INFO L124 PetriNetUnfolderBase]: 199/381 cut-off events. [2023-11-28 20:43:11,393 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-28 20:43:11,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 381 events. 199/381 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1608 event pairs, 6 based on Foata normal form. 16/378 useless extension candidates. Maximal degree in co-relation 679. Up to 239 conditions per place. [2023-11-28 20:43:11,401 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 39 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-11-28 20:43:11,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 195 flow [2023-11-28 20:43:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:43:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:43:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2023-11-28 20:43:11,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-11-28 20:43:11,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 75 transitions. [2023-11-28 20:43:11,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 75 transitions. [2023-11-28 20:43:11,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:43:11,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 75 transitions. [2023-11-28 20:43:11,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2023-11-28 20:43:11,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-11-28 20:43:11,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-11-28 20:43:11,428 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 67 flow. Second operand 4 states and 75 transitions. [2023-11-28 20:43:11,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 195 flow [2023-11-28 20:43:11,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:43:11,435 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 66 flow [2023-11-28 20:43:11,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-11-28 20:43:11,441 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-28 20:43:11,441 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 66 flow [2023-11-28 20:43:11,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-11-28 20:43:11,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:43:11,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:11,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:43:11,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 20:43:11,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-28 20:43:11,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash -746104922, now seen corresponding path program 1 times [2023-11-28 20:43:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:11,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747483802] [2023-11-28 20:43:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:11,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:43:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144356732] [2023-11-28 20:43:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:11,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:11,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:11,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:43:11,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:43:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:11,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:43:11,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:43:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:43:11,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:43:11,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:11,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747483802] [2023-11-28 20:43:11,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:43:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144356732] [2023-11-28 20:43:11,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144356732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:43:11,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:43:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:43:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756774206] [2023-11-28 20:43:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:43:11,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:43:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:43:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:43:11,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-28 20:43:11,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-11-28 20:43:11,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:43:11,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-28 20:43:11,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:43:12,081 INFO L124 PetriNetUnfolderBase]: 314/607 cut-off events. [2023-11-28 20:43:12,081 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-28 20:43:12,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 607 events. 314/607 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2635 event pairs, 165 based on Foata normal form. 32/627 useless extension candidates. Maximal degree in co-relation 497. Up to 343 conditions per place. [2023-11-28 20:43:12,088 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 44 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-28 20:43:12,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 218 flow [2023-11-28 20:43:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:43:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:43:12,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2023-11-28 20:43:12,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2023-11-28 20:43:12,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 81 transitions. [2023-11-28 20:43:12,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 81 transitions. [2023-11-28 20:43:12,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:43:12,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 81 transitions. [2023-11-28 20:43:12,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-28 20:43:12,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-11-28 20:43:12,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-11-28 20:43:12,094 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 66 flow. Second operand 4 states and 81 transitions. [2023-11-28 20:43:12,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 218 flow [2023-11-28 20:43:12,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:43:12,098 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 82 flow [2023-11-28 20:43:12,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-28 20:43:12,099 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-28 20:43:12,099 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 82 flow [2023-11-28 20:43:12,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2023-11-28 20:43:12,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:43:12,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:12,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:43:12,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:12,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-28 20:43:12,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:12,301 INFO L85 PathProgramCache]: Analyzing trace with hash 824564902, now seen corresponding path program 1 times [2023-11-28 20:43:12,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:12,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350559462] [2023-11-28 20:43:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:12,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:43:12,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:12,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350559462] [2023-11-28 20:43:12,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350559462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:43:12,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:43:12,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:43:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720346811] [2023-11-28 20:43:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:43:12,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:43:12,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:43:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:43:12,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-28 20:43:12,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-11-28 20:43:12,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:43:12,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-28 20:43:12,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:43:12,789 INFO L124 PetriNetUnfolderBase]: 557/1064 cut-off events. [2023-11-28 20:43:12,789 INFO L125 PetriNetUnfolderBase]: For 277/293 co-relation queries the response was YES. [2023-11-28 20:43:12,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 1064 events. 557/1064 cut-off events. For 277/293 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4992 event pairs, 321 based on Foata normal form. 52/1085 useless extension candidates. Maximal degree in co-relation 1811. Up to 627 conditions per place. [2023-11-28 20:43:12,796 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 51 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-11-28 20:43:12,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 59 transitions, 282 flow [2023-11-28 20:43:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:43:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:43:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2023-11-28 20:43:12,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6287878787878788 [2023-11-28 20:43:12,798 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 83 transitions. [2023-11-28 20:43:12,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 83 transitions. [2023-11-28 20:43:12,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:43:12,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 83 transitions. [2023-11-28 20:43:12,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2023-11-28 20:43:12,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-11-28 20:43:12,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-11-28 20:43:12,801 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 82 flow. Second operand 4 states and 83 transitions. [2023-11-28 20:43:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 59 transitions, 282 flow [2023-11-28 20:43:12,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:43:12,803 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 104 flow [2023-11-28 20:43:12,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-28 20:43:12,804 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-11-28 20:43:12,804 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 104 flow [2023-11-28 20:43:12,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-11-28 20:43:12,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:43:12,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-28 20:43:12,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:43:12,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-28 20:43:12,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash 470967495, now seen corresponding path program 1 times [2023-11-28 20:43:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:12,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043799308] [2023-11-28 20:43:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:12,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:43:12,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367149831] [2023-11-28 20:43:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:12,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:12,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:12,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:43:12,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:43:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:12,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:43:12,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:43:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:43:13,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:43:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:43:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043799308] [2023-11-28 20:43:13,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:43:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367149831] [2023-11-28 20:43:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367149831] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:43:13,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:43:13,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-28 20:43:13,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452342897] [2023-11-28 20:43:13,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:43:13,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:43:13,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:43:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:43:13,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2023-11-28 20:43:13,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 104 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2023-11-28 20:43:13,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:43:13,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2023-11-28 20:43:13,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:43:13,580 INFO L124 PetriNetUnfolderBase]: 885/1646 cut-off events. [2023-11-28 20:43:13,581 INFO L125 PetriNetUnfolderBase]: For 599/667 co-relation queries the response was YES. [2023-11-28 20:43:13,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 1646 events. 885/1646 cut-off events. For 599/667 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7686 event pairs, 91 based on Foata normal form. 26/1672 useless extension candidates. Maximal degree in co-relation 3614. Up to 458 conditions per place. [2023-11-28 20:43:13,591 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 108 selfloop transitions, 8 changer transitions 8/129 dead transitions. [2023-11-28 20:43:13,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 129 transitions, 677 flow [2023-11-28 20:43:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:43:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 20:43:13,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2023-11-28 20:43:13,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2023-11-28 20:43:13,594 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 174 transitions. [2023-11-28 20:43:13,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 174 transitions. [2023-11-28 20:43:13,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:43:13,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 174 transitions. [2023-11-28 20:43:13,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 19.333333333333332) internal successors, (174), 9 states have internal predecessors, (174), 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) [2023-11-28 20:43:13,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 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) [2023-11-28 20:43:13,598 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 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) [2023-11-28 20:43:13,598 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 104 flow. Second operand 9 states and 174 transitions. [2023-11-28 20:43:13,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 129 transitions, 677 flow [2023-11-28 20:43:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 129 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:43:13,602 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 128 flow [2023-11-28 20:43:13,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=128, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-11-28 20:43:13,603 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-11-28 20:43:13,603 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 128 flow [2023-11-28 20:43:13,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2023-11-28 20:43:13,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:43:13,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:13,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:43:13,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:13,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-28 20:43:13,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash -17949732, now seen corresponding path program 1 times [2023-11-28 20:43:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:13,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272897337] [2023-11-28 20:43:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:13,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:43:13,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:13,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272897337] [2023-11-28 20:43:13,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272897337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:43:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159980670] [2023-11-28 20:43:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:13,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:13,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:13,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:43:13,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:43:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:14,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:43:14,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:43:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:43:14,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:43:14,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159980670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:43:14,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:43:14,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-28 20:43:14,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715523213] [2023-11-28 20:43:14,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:43:14,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:43:14,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:43:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:43:14,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-28 20:43:14,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2023-11-28 20:43:14,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:43:14,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-28 20:43:14,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:43:14,590 INFO L124 PetriNetUnfolderBase]: 749/1481 cut-off events. [2023-11-28 20:43:14,590 INFO L125 PetriNetUnfolderBase]: For 1077/1077 co-relation queries the response was YES. [2023-11-28 20:43:14,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 1481 events. 749/1481 cut-off events. For 1077/1077 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7375 event pairs, 54 based on Foata normal form. 42/1480 useless extension candidates. Maximal degree in co-relation 3054. Up to 446 conditions per place. [2023-11-28 20:43:14,603 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 81 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-11-28 20:43:14,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 566 flow [2023-11-28 20:43:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:43:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:43:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2023-11-28 20:43:14,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808080808080808 [2023-11-28 20:43:14,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 115 transitions. [2023-11-28 20:43:14,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 115 transitions. [2023-11-28 20:43:14,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:43:14,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 115 transitions. [2023-11-28 20:43:14,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2023-11-28 20:43:14,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 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) [2023-11-28 20:43:14,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 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) [2023-11-28 20:43:14,608 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 128 flow. Second operand 6 states and 115 transitions. [2023-11-28 20:43:14,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 566 flow [2023-11-28 20:43:14,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 91 transitions, 501 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-28 20:43:14,614 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 121 flow [2023-11-28 20:43:14,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-11-28 20:43:14,616 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-11-28 20:43:14,616 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 121 flow [2023-11-28 20:43:14,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2023-11-28 20:43:14,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:43:14,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:14,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:43:14,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:14,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-28 20:43:14,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -556441247, now seen corresponding path program 1 times [2023-11-28 20:43:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:14,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383370779] [2023-11-28 20:43:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:43:14,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:14,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383370779] [2023-11-28 20:43:14,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383370779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:43:14,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:43:14,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:43:14,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414055020] [2023-11-28 20:43:14,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:43:14,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:43:14,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:14,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:43:14,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:43:14,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2023-11-28 20:43:14,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2023-11-28 20:43:14,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:43:14,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2023-11-28 20:43:14,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:43:15,257 INFO L124 PetriNetUnfolderBase]: 810/1510 cut-off events. [2023-11-28 20:43:15,257 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2023-11-28 20:43:15,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 1510 events. 810/1510 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7241 event pairs, 113 based on Foata normal form. 42/1551 useless extension candidates. Maximal degree in co-relation 3238. Up to 909 conditions per place. [2023-11-28 20:43:15,263 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-11-28 20:43:15,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 337 flow [2023-11-28 20:43:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:43:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:43:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2023-11-28 20:43:15,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2023-11-28 20:43:15,267 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 71 transitions. [2023-11-28 20:43:15,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 71 transitions. [2023-11-28 20:43:15,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:43:15,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 71 transitions. [2023-11-28 20:43:15,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-11-28 20:43:15,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-11-28 20:43:15,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2023-11-28 20:43:15,269 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 121 flow. Second operand 4 states and 71 transitions. [2023-11-28 20:43:15,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 337 flow [2023-11-28 20:43:15,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 324 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-28 20:43:15,274 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-11-28 20:43:15,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-11-28 20:43:15,275 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-11-28 20:43:15,275 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-11-28 20:43:15,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2023-11-28 20:43:15,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-28 20:43:15,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2023-11-28 20:43:15,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-28 20:43:15,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-28 20:43:15,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-28 20:43:15,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-28 20:43:15,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-28 20:43:15,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-28 20:43:15,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-28 20:43:15,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-11-28 20:43:15,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:43:15,280 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-28 20:43:15,286 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 20:43:15,286 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:43:15,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:43:15 BasicIcfg [2023-11-28 20:43:15,292 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:43:15,292 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:43:15,292 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:43:15,293 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:43:15,293 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:43:10" (3/4) ... [2023-11-28 20:43:15,295 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 20:43:15,298 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-28 20:43:15,298 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-28 20:43:15,302 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 56 nodes and edges [2023-11-28 20:43:15,302 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-28 20:43:15,302 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-28 20:43:15,303 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-28 20:43:15,386 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:43:15,387 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 20:43:15,387 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:43:15,388 INFO L158 Benchmark]: Toolchain (without parser) took 6030.69ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 103.9MB in the beginning and 101.2MB in the end (delta: 2.8MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2023-11-28 20:43:15,388 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:43:15,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.41ms. Allocated memory is still 136.3MB. Free memory was 103.9MB in the beginning and 83.4MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-28 20:43:15,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.16ms. Allocated memory is still 136.3MB. Free memory was 83.4MB in the beginning and 80.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:43:15,389 INFO L158 Benchmark]: Boogie Preprocessor took 54.39ms. Allocated memory is still 136.3MB. Free memory was 80.8MB in the beginning and 77.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:43:15,390 INFO L158 Benchmark]: RCFGBuilder took 702.12ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 77.9MB in the beginning and 106.1MB in the end (delta: -28.1MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2023-11-28 20:43:15,390 INFO L158 Benchmark]: TraceAbstraction took 4676.25ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 105.1MB in the beginning and 105.3MB in the end (delta: -198.8kB). Peak memory consumption was 88.7MB. Max. memory is 16.1GB. [2023-11-28 20:43:15,391 INFO L158 Benchmark]: Witness Printer took 94.90ms. Allocated memory is still 197.1MB. Free memory was 105.3MB in the beginning and 101.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:43:15,393 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.41ms. Allocated memory is still 136.3MB. Free memory was 103.9MB in the beginning and 83.4MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.16ms. Allocated memory is still 136.3MB. Free memory was 83.4MB in the beginning and 80.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.39ms. Allocated memory is still 136.3MB. Free memory was 80.8MB in the beginning and 77.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 702.12ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 77.9MB in the beginning and 106.1MB in the end (delta: -28.1MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4676.25ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 105.1MB in the beginning and 105.3MB in the end (delta: -198.8kB). Peak memory consumption was 88.7MB. Max. memory is 16.1GB. * Witness Printer took 94.90ms. Allocated memory is still 197.1MB. Free memory was 105.3MB in the beginning and 101.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 724]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 724]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 56 locations, 10 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: 4.6s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 326 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 299 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 779 IncrementalHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 17 mSDtfsCounter, 779 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=4, InterpolantAutomatonStates: 31, 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, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 269 SizeOfPredicates, 6 NumberOfNonLiveVariables, 668 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 13/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 20:43:15,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504d9d1a-03cc-4e7a-9a5e-6949c53ab9b1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE