./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/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_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/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_41f5dbef-c804-4383-8837-1ade81b557cb/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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:45:58,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:45:58,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:45:58,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:45:58,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:45:58,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:45:58,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:45:58,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:45:58,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:45:58,970 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:45:58,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:45:58,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:45:58,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:45:58,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:45:58,973 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:45:58,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:45:58,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:45:58,975 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:45:58,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:45:58,976 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:45:58,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:45:58,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:45:58,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:45:58,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:45:58,978 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:45:58,979 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:45:58,979 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:45:58,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:45:58,980 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:45:58,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:45:58,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:45:58,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:45:58,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:45:58,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:45:58,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:45:58,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:45:58,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:45:58,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:45:58,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:45:58,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:45:58,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:45:58,984 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:45:58,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:45:58,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:45:58,984 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_41f5dbef-c804-4383-8837-1ade81b557cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2023-11-29 01:45:59,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:45:59,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:45:59,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:45:59,203 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:45:59,203 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:45:59,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-29 01:46:01,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:46:02,221 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:46:02,222 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-29 01:46:02,242 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/data/e67194be5/4b5b8039a9a64994bc0f364fa8db2bae/FLAG0915dd113 [2023-11-29 01:46:02,256 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/data/e67194be5/4b5b8039a9a64994bc0f364fa8db2bae [2023-11-29 01:46:02,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:46:02,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:46:02,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:46:02,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:46:02,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:46:02,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:46:02" (1/1) ... [2023-11-29 01:46:02,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5bdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:02, skipping insertion in model container [2023-11-29 01:46:02,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:46:02" (1/1) ... [2023-11-29 01:46:02,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:46:02,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:46:02,851 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:46:02,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:46:03,006 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:46:03,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03 WrapperNode [2023-11-29 01:46:03,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:46:03,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:46:03,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:46:03,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:46:03,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,070 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 287 [2023-11-29 01:46:03,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:46:03,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:46:03,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:46:03,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:46:03,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,117 INFO L175 MemorySlicer]: Split 47 memory accesses to 7 slices as follows [2, 8, 5, 5, 5, 20, 2]. 43 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 1, 5, 5, 5, 0, 0]. The 16 writes are split as follows [0, 3, 0, 0, 0, 12, 1]. [2023-11-29 01:46:03,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:46:03,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:46:03,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:46:03,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:46:03,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (1/1) ... [2023-11-29 01:46:03,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:46:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:03,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:46:03,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:46:03,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:46:03,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:46:03,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:46:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:46:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:46:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 01:46:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 01:46:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 01:46:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:46:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 01:46:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 01:46:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 01:46:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 01:46:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 01:46:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 01:46:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 01:46:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:46:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:46:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:46:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:46:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:46:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:46:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 01:46:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 01:46:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:46:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:46:03,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:46:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:46:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:46:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 01:46:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 01:46:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:46:03,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:46:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:46:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:46:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:46:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:46:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:46:03,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 01:46:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 01:46:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 01:46:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 01:46:03,210 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 01:46:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:46:03,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:46:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:46:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:46:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:46:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:46:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:46:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:46:03,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:46:03,213 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:46:03,400 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:46:03,402 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:46:03,818 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:46:04,099 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:46:04,099 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-29 01:46:04,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:46:04 BoogieIcfgContainer [2023-11-29 01:46:04,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:46:04,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:46:04,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:46:04,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:46:04,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:46:02" (1/3) ... [2023-11-29 01:46:04,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6a5ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:46:04, skipping insertion in model container [2023-11-29 01:46:04,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:03" (2/3) ... [2023-11-29 01:46:04,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6a5ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:46:04, skipping insertion in model container [2023-11-29 01:46:04,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:46:04" (3/3) ... [2023-11-29 01:46:04,110 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-11-29 01:46:04,120 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:46:04,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:46:04,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-29 01:46:04,132 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:46:04,197 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 01:46:04,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 118 transitions, 243 flow [2023-11-29 01:46:04,299 INFO L124 PetriNetUnfolderBase]: 38/174 cut-off events. [2023-11-29 01:46:04,299 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:46:04,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 38/174 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 637 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-11-29 01:46:04,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 118 transitions, 243 flow [2023-11-29 01:46:04,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 117 transitions, 241 flow [2023-11-29 01:46:04,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:04,327 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;@6305c858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:04,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 01:46:04,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:04,334 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 01:46:04,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:46:04,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:04,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:46:04,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 01:46:04,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash 724463356, now seen corresponding path program 1 times [2023-11-29 01:46:04,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:04,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486393178] [2023-11-29 01:46:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:04,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486393178] [2023-11-29 01:46:04,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486393178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:04,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:04,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:46:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418398038] [2023-11-29 01:46:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:04,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:04,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:04,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:04,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:04,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 118 [2023-11-29 01:46:04,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-29 01:46:04,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:04,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 118 [2023-11-29 01:46:04,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:05,256 INFO L124 PetriNetUnfolderBase]: 654/1733 cut-off events. [2023-11-29 01:46:05,256 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:46:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3034 conditions, 1733 events. 654/1733 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11491 event pairs, 0 based on Foata normal form. 356/1924 useless extension candidates. Maximal degree in co-relation 2993. Up to 1229 conditions per place. [2023-11-29 01:46:05,274 INFO L140 encePairwiseOnDemand]: 91/118 looper letters, 95 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2023-11-29 01:46:05,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 477 flow [2023-11-29 01:46:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:46:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:46:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2023-11-29 01:46:05,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6313559322033898 [2023-11-29 01:46:05,289 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 298 transitions. [2023-11-29 01:46:05,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 298 transitions. [2023-11-29 01:46:05,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:05,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 298 transitions. [2023-11-29 01:46:05,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2023-11-29 01:46:05,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2023-11-29 01:46:05,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2023-11-29 01:46:05,305 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 241 flow. Second operand 4 states and 298 transitions. [2023-11-29 01:46:05,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 477 flow [2023-11-29 01:46:05,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 137 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:46:05,315 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 205 flow [2023-11-29 01:46:05,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2023-11-29 01:46:05,321 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2023-11-29 01:46:05,321 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 205 flow [2023-11-29 01:46:05,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-29 01:46:05,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:05,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:05,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:46:05,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 01:46:05,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash 277889672, now seen corresponding path program 1 times [2023-11-29 01:46:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:05,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814468160] [2023-11-29 01:46:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:05,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:05,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:46:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:05,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:46:05,422 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:46:05,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-29 01:46:05,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-29 01:46:05,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-29 01:46:05,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-29 01:46:05,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-29 01:46:05,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-29 01:46:05,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-29 01:46:05,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-29 01:46:05,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-29 01:46:05,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-29 01:46:05,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-29 01:46:05,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-29 01:46:05,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-29 01:46:05,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-29 01:46:05,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-29 01:46:05,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-29 01:46:05,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-29 01:46:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:46:05,429 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 01:46:05,432 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:46:05,432 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 01:46:05,488 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 01:46:05,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 168 transitions, 352 flow [2023-11-29 01:46:05,538 INFO L124 PetriNetUnfolderBase]: 64/299 cut-off events. [2023-11-29 01:46:05,538 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 01:46:05,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 299 events. 64/299 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1332 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 182. Up to 12 conditions per place. [2023-11-29 01:46:05,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 168 transitions, 352 flow [2023-11-29 01:46:05,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 168 transitions, 352 flow [2023-11-29 01:46:05,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:05,549 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;@6305c858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:05,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-29 01:46:05,553 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:05,553 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 01:46:05,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:46:05,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:05,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:46:05,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 01:46:05,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash 884832724, now seen corresponding path program 1 times [2023-11-29 01:46:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:05,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462085844] [2023-11-29 01:46:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:05,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:05,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:05,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462085844] [2023-11-29 01:46:05,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462085844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:05,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:05,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:46:05,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286106754] [2023-11-29 01:46:05,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:05,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:05,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:05,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:05,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:05,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 168 [2023-11-29 01:46:05,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 168 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2023-11-29 01:46:05,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:05,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 168 [2023-11-29 01:46:05,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:11,833 INFO L124 PetriNetUnfolderBase]: 31607/62975 cut-off events. [2023-11-29 01:46:11,833 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-29 01:46:11,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110147 conditions, 62975 events. 31607/62975 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 635720 event pairs, 15893 based on Foata normal form. 12328/68871 useless extension candidates. Maximal degree in co-relation 13583. Up to 46988 conditions per place. [2023-11-29 01:46:12,211 INFO L140 encePairwiseOnDemand]: 131/168 looper letters, 123 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2023-11-29 01:46:12,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 182 transitions, 632 flow [2023-11-29 01:46:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:46:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:46:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2023-11-29 01:46:12,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2023-11-29 01:46:12,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2023-11-29 01:46:12,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2023-11-29 01:46:12,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:12,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2023-11-29 01:46:12,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2023-11-29 01:46:12,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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) [2023-11-29 01:46:12,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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) [2023-11-29 01:46:12,225 INFO L175 Difference]: Start difference. First operand has 136 places, 168 transitions, 352 flow. Second operand 4 states and 404 transitions. [2023-11-29 01:46:12,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 182 transitions, 632 flow [2023-11-29 01:46:12,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 182 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:46:12,234 INFO L231 Difference]: Finished difference. Result has 141 places, 139 transitions, 314 flow [2023-11-29 01:46:12,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=141, PETRI_TRANSITIONS=139} [2023-11-29 01:46:12,235 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 5 predicate places. [2023-11-29 01:46:12,235 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 139 transitions, 314 flow [2023-11-29 01:46:12,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2023-11-29 01:46:12,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:12,236 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:12,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:46:12,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 01:46:12,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1341598999, now seen corresponding path program 1 times [2023-11-29 01:46:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:12,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56278946] [2023-11-29 01:46:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56278946] [2023-11-29 01:46:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56278946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306767048] [2023-11-29 01:46:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:12,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:12,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:12,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:12,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:46:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:12,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:46:12,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:12,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:12,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306767048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:12,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:46:12,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 01:46:12,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67798307] [2023-11-29 01:46:12,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:12,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:46:12,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:12,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:46:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:46:12,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 168 [2023-11-29 01:46:12,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 139 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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) [2023-11-29 01:46:12,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:12,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 168 [2023-11-29 01:46:12,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:17,843 INFO L124 PetriNetUnfolderBase]: 30084/56026 cut-off events. [2023-11-29 01:46:17,844 INFO L125 PetriNetUnfolderBase]: For 1958/1958 co-relation queries the response was YES. [2023-11-29 01:46:17,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103486 conditions, 56026 events. 30084/56026 cut-off events. For 1958/1958 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 537047 event pairs, 902 based on Foata normal form. 484/51739 useless extension candidates. Maximal degree in co-relation 6154. Up to 38562 conditions per place. [2023-11-29 01:46:18,162 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 203 selfloop transitions, 6 changer transitions 0/265 dead transitions. [2023-11-29 01:46:18,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 265 transitions, 982 flow [2023-11-29 01:46:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:46:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:46:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2023-11-29 01:46:18,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-11-29 01:46:18,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 546 transitions. [2023-11-29 01:46:18,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 546 transitions. [2023-11-29 01:46:18,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:18,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 546 transitions. [2023-11-29 01:46:18,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2023-11-29 01:46:18,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 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) [2023-11-29 01:46:18,174 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 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) [2023-11-29 01:46:18,174 INFO L175 Difference]: Start difference. First operand has 141 places, 139 transitions, 314 flow. Second operand 6 states and 546 transitions. [2023-11-29 01:46:18,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 265 transitions, 982 flow [2023-11-29 01:46:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 265 transitions, 980 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:46:18,184 INFO L231 Difference]: Finished difference. Result has 144 places, 138 transitions, 320 flow [2023-11-29 01:46:18,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=144, PETRI_TRANSITIONS=138} [2023-11-29 01:46:18,186 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 8 predicate places. [2023-11-29 01:46:18,187 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 138 transitions, 320 flow [2023-11-29 01:46:18,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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) [2023-11-29 01:46:18,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:18,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 01:46:18,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:46:18,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41f5dbef-c804-4383-8837-1ade81b557cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:18,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 01:46:18,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:18,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1360103108, now seen corresponding path program 1 times [2023-11-29 01:46:18,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:18,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923134162] [2023-11-29 01:46:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:18,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:46:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:18,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923134162] [2023-11-29 01:46:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923134162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:18,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:18,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:46:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537008471] [2023-11-29 01:46:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:18,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 168 [2023-11-29 01:46:18,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 138 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2023-11-29 01:46:18,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:18,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 168 [2023-11-29 01:46:18,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:24,372 INFO L124 PetriNetUnfolderBase]: 29162/54189 cut-off events. [2023-11-29 01:46:24,372 INFO L125 PetriNetUnfolderBase]: For 3697/3697 co-relation queries the response was YES. [2023-11-29 01:46:24,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101293 conditions, 54189 events. 29162/54189 cut-off events. For 3697/3697 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 516200 event pairs, 994 based on Foata normal form. 484/50486 useless extension candidates. Maximal degree in co-relation 69330. Up to 40013 conditions per place. [2023-11-29 01:46:24,635 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 160 selfloop transitions, 6 changer transitions 0/222 dead transitions. [2023-11-29 01:46:24,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 222 transitions, 818 flow [2023-11-29 01:46:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:46:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:46:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2023-11-29 01:46:24,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788690476190477 [2023-11-29 01:46:24,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2023-11-29 01:46:24,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2023-11-29 01:46:24,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:24,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2023-11-29 01:46:24,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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) [2023-11-29 01:46:24,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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) [2023-11-29 01:46:24,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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) [2023-11-29 01:46:24,644 INFO L175 Difference]: Start difference. First operand has 144 places, 138 transitions, 320 flow. Second operand 4 states and 389 transitions. [2023-11-29 01:46:24,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 222 transitions, 818 flow [2023-11-29 01:46:24,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 222 transitions, 802 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 01:46:24,663 INFO L231 Difference]: Finished difference. Result has 142 places, 138 transitions, 320 flow [2023-11-29 01:46:24,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=142, PETRI_TRANSITIONS=138} [2023-11-29 01:46:24,665 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, 6 predicate places. [2023-11-29 01:46:24,665 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 138 transitions, 320 flow [2023-11-29 01:46:24,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2023-11-29 01:46:24,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:24,666 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 01:46:24,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:46:24,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 01:46:24,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1388997019, now seen corresponding path program 1 times [2023-11-29 01:46:24,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:24,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545347521] [2023-11-29 01:46:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:24,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:46:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:46:24,740 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:46:24,740 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:46:24,741 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-29 01:46:24,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-29 01:46:24,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-29 01:46:24,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-29 01:46:24,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-29 01:46:24,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-29 01:46:24,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-29 01:46:24,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-29 01:46:24,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-29 01:46:24,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-29 01:46:24,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-29 01:46:24,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-29 01:46:24,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-29 01:46:24,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-29 01:46:24,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-29 01:46:24,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-29 01:46:24,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-29 01:46:24,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-29 01:46:24,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-29 01:46:24,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-29 01:46:24,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-29 01:46:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:46:24,745 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 01:46:24,746 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:46:24,746 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 01:46:24,814 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 01:46:24,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 218 transitions, 463 flow [2023-11-29 01:46:24,866 INFO L124 PetriNetUnfolderBase]: 93/443 cut-off events. [2023-11-29 01:46:24,867 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 01:46:24,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 443 events. 93/443 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2155 event pairs, 1 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 314. Up to 16 conditions per place. [2023-11-29 01:46:24,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 218 transitions, 463 flow [2023-11-29 01:46:24,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 218 transitions, 463 flow [2023-11-29 01:46:24,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:24,879 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;@6305c858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:24,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-29 01:46:24,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:24,882 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-29 01:46:24,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:46:24,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:24,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:46:24,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-29 01:46:24,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1092917342, now seen corresponding path program 1 times [2023-11-29 01:46:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:24,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761179171] [2023-11-29 01:46:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:24,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:24,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:24,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761179171] [2023-11-29 01:46:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761179171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:46:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231871197] [2023-11-29 01:46:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:24,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:24,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 218 [2023-11-29 01:46:24,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 218 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2023-11-29 01:46:24,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:24,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 218 [2023-11-29 01:46:24,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand