./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_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_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/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_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/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_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:44:10,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:44:10,922 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:44:10,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:44:10,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:44:10,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:44:10,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:44:10,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:44:10,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:44:10,956 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:44:10,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:44:10,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:44:10,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:44:10,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:44:10,959 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:44:10,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:44:10,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:44:10,960 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:44:10,961 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:44:10,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:44:10,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:44:10,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:44:10,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:44:10,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:44:10,966 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:44:10,966 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:44:10,967 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:44:10,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:44:10,967 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:44:10,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:44:10,968 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:44:10,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:44:10,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:44:10,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:44:10,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:44:10,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:44:10,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:44:10,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:44:10,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:44:10,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:44:10,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:44:10,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:44:10,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:44:10,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:44:10,972 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_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2023-11-28 20:44:11,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:44:11,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:44:11,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:44:11,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:44:11,224 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:44:11,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2023-11-28 20:44:13,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:44:14,213 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:44:14,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2023-11-28 20:44:14,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/data/116ccad61/17a300a927bd45aa9e4c8e6fc3f8c5bc/FLAG3d6ddb2e5 [2023-11-28 20:44:14,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/data/116ccad61/17a300a927bd45aa9e4c8e6fc3f8c5bc [2023-11-28 20:44:14,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:44:14,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:44:14,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:44:14,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:44:14,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:44:14,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e14ecc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14, skipping insertion in model container [2023-11-28 20:44:14,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,310 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:44:14,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:44:14,696 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:44:14,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:44:14,804 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:44:14,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14 WrapperNode [2023-11-28 20:44:14,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:44:14,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:44:14,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:44:14,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:44:14,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,867 INFO L138 Inliner]: procedures = 244, calls = 55, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-11-28 20:44:14,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:44:14,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:44:14,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:44:14,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:44:14,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,908 INFO L175 MemorySlicer]: Split 31 memory accesses to 7 slices as follows [2, 1, 8, 8, 8, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 27 initializations are split as follows [2, 1, 8, 8, 8, 0, 0]. The 2 writes are split as follows [0, 0, 0, 0, 0, 1, 1]. [2023-11-28 20:44:14,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,924 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:44:14,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:44:14,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:44:14,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:44:14,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (1/1) ... [2023-11-28 20:44:14,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:44:14,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:14,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:44:14,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:44:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:44:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:44:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-28 20:44:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-28 20:44:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-28 20:44:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-28 20:44:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-28 20:44:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-28 20:44:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-28 20:44:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 20:44:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:44:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:44:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:44:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:44:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 20:44:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-28 20:44:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-28 20:44:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 20:44:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 20:44:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 20:44:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 20:44:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:44:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:44:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:44:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:44:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 20:44:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-28 20:44:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-28 20:44:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 20:44:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:44:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:44:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:44:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:44:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:44:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 20:44:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-28 20:44:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-28 20:44:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:44:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:44:15,000 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 20:44:15,167 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:44:15,169 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:44:15,411 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:44:15,633 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:44:15,633 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-28 20:44:15,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:44:15 BoogieIcfgContainer [2023-11-28 20:44:15,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:44:15,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:44:15,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:44:15,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:44:15,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:44:14" (1/3) ... [2023-11-28 20:44:15,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228c8551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:44:15, skipping insertion in model container [2023-11-28 20:44:15,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:44:14" (2/3) ... [2023-11-28 20:44:15,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228c8551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:44:15, skipping insertion in model container [2023-11-28 20:44:15,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:44:15" (3/3) ... [2023-11-28 20:44:15,642 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-11-28 20:44:15,650 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 20:44:15,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:44:15,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-28 20:44:15,662 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:44:15,711 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 20:44:15,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 116 flow [2023-11-28 20:44:15,790 INFO L124 PetriNetUnfolderBase]: 4/49 cut-off events. [2023-11-28 20:44:15,790 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 20:44:15,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 49 events. 4/49 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-28 20:44:15,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 51 transitions, 116 flow [2023-11-28 20:44:15,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 47 transitions, 103 flow [2023-11-28 20:44:15,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:44:15,816 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;@629c5680, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:44:15,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-28 20:44:15,826 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:44:15,826 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-28 20:44:15,827 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 20:44:15,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:15,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:15,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:15,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:15,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1066793388, now seen corresponding path program 1 times [2023-11-28 20:44:15,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:15,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838471716] [2023-11-28 20:44:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:15,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:16,164 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 20:44:16,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838471716] [2023-11-28 20:44:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838471716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:16,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:16,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:44:16,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060155574] [2023-11-28 20:44:16,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:16,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:44:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:44:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:44:16,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2023-11-28 20:44:16,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 20:44:16,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:16,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2023-11-28 20:44:16,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:16,598 INFO L124 PetriNetUnfolderBase]: 832/1629 cut-off events. [2023-11-28 20:44:16,598 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-28 20:44:16,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 1629 events. 832/1629 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8788 event pairs, 230 based on Foata normal form. 18/1460 useless extension candidates. Maximal degree in co-relation 2842. Up to 897 conditions per place. [2023-11-28 20:44:16,615 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 60 selfloop transitions, 5 changer transitions 3/82 dead transitions. [2023-11-28 20:44:16,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 318 flow [2023-11-28 20:44:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:44:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:44:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-28 20:44:16,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6715686274509803 [2023-11-28 20:44:16,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-28 20:44:16,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-28 20:44:16,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:16,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-28 20:44:16,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 20:44:16,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:16,640 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:16,642 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 103 flow. Second operand 4 states and 137 transitions. [2023-11-28 20:44:16,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 318 flow [2023-11-28 20:44:16,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 82 transitions, 309 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:44:16,649 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 142 flow [2023-11-28 20:44:16,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-11-28 20:44:16,655 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-28 20:44:16,656 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 142 flow [2023-11-28 20:44:16,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 20:44:16,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:16,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:16,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:44:16,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:16,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash -715048968, now seen corresponding path program 1 times [2023-11-28 20:44:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:16,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163304373] [2023-11-28 20:44:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:16,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:16,761 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 20:44:16,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163304373] [2023-11-28 20:44:16,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163304373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:16,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:16,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:44:16,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511993842] [2023-11-28 20:44:16,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:16,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:44:16,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:16,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:44:16,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:44:16,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2023-11-28 20:44:16,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 142 flow. Second operand has 4 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 20:44:16,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:16,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2023-11-28 20:44:16,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:17,113 INFO L124 PetriNetUnfolderBase]: 914/1725 cut-off events. [2023-11-28 20:44:17,113 INFO L125 PetriNetUnfolderBase]: For 424/433 co-relation queries the response was YES. [2023-11-28 20:44:17,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 1725 events. 914/1725 cut-off events. For 424/433 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9465 event pairs, 439 based on Foata normal form. 46/1710 useless extension candidates. Maximal degree in co-relation 2996. Up to 1135 conditions per place. [2023-11-28 20:44:17,130 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 65 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-11-28 20:44:17,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 366 flow [2023-11-28 20:44:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:44:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:44:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2023-11-28 20:44:17,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2023-11-28 20:44:17,133 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 140 transitions. [2023-11-28 20:44:17,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 140 transitions. [2023-11-28 20:44:17,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:17,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 140 transitions. [2023-11-28 20:44:17,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 20:44:17,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:17,137 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:17,137 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 142 flow. Second operand 4 states and 140 transitions. [2023-11-28 20:44:17,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 366 flow [2023-11-28 20:44:17,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:44:17,142 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 166 flow [2023-11-28 20:44:17,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-28 20:44:17,143 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-11-28 20:44:17,144 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 166 flow [2023-11-28 20:44:17,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 20:44:17,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:17,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:17,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:44:17,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:17,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash 915826636, now seen corresponding path program 1 times [2023-11-28 20:44:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:17,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837265528] [2023-11-28 20:44:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:17,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,264 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 20:44:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:17,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837265528] [2023-11-28 20:44:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837265528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:17,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:17,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:44:17,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084627688] [2023-11-28 20:44:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:17,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:44:17,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:44:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:44:17,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2023-11-28 20:44:17,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 20:44:17,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:17,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2023-11-28 20:44:17,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:17,466 INFO L124 PetriNetUnfolderBase]: 453/1103 cut-off events. [2023-11-28 20:44:17,466 INFO L125 PetriNetUnfolderBase]: For 375/387 co-relation queries the response was YES. [2023-11-28 20:44:17,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2370 conditions, 1103 events. 453/1103 cut-off events. For 375/387 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6204 event pairs, 148 based on Foata normal form. 62/1132 useless extension candidates. Maximal degree in co-relation 1670. Up to 453 conditions per place. [2023-11-28 20:44:17,476 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 40 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2023-11-28 20:44:17,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 305 flow [2023-11-28 20:44:17,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:44:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:44:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2023-11-28 20:44:17,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6928104575163399 [2023-11-28 20:44:17,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 106 transitions. [2023-11-28 20:44:17,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 106 transitions. [2023-11-28 20:44:17,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:17,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 106 transitions. [2023-11-28 20:44:17,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 20:44:17,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 20:44:17,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 20:44:17,481 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 166 flow. Second operand 3 states and 106 transitions. [2023-11-28 20:44:17,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 305 flow [2023-11-28 20:44:17,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 299 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-28 20:44:17,487 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 172 flow [2023-11-28 20:44:17,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-28 20:44:17,488 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-28 20:44:17,488 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 172 flow [2023-11-28 20:44:17,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 20:44:17,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:17,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:17,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:44:17,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:17,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash 543510473, now seen corresponding path program 1 times [2023-11-28 20:44:17,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:17,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250983236] [2023-11-28 20:44:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:17,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,615 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 20:44:17,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:17,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250983236] [2023-11-28 20:44:17,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250983236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:17,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:17,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:44:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569664982] [2023-11-28 20:44:17,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:17,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:44:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:17,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:44:17,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:44:17,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2023-11-28 20:44:17,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 20:44:17,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:17,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2023-11-28 20:44:17,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:18,002 INFO L124 PetriNetUnfolderBase]: 646/1389 cut-off events. [2023-11-28 20:44:18,002 INFO L125 PetriNetUnfolderBase]: For 592/614 co-relation queries the response was YES. [2023-11-28 20:44:18,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3271 conditions, 1389 events. 646/1389 cut-off events. For 592/614 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6949 event pairs, 145 based on Foata normal form. 36/1369 useless extension candidates. Maximal degree in co-relation 2693. Up to 424 conditions per place. [2023-11-28 20:44:18,013 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 85 selfloop transitions, 8 changer transitions 6/111 dead transitions. [2023-11-28 20:44:18,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 564 flow [2023-11-28 20:44:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:44:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:44:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2023-11-28 20:44:18,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322128851540616 [2023-11-28 20:44:18,016 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 190 transitions. [2023-11-28 20:44:18,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 190 transitions. [2023-11-28 20:44:18,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:18,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 190 transitions. [2023-11-28 20:44:18,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 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 20:44:18,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 20:44:18,019 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 20:44:18,020 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 172 flow. Second operand 7 states and 190 transitions. [2023-11-28 20:44:18,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 564 flow [2023-11-28 20:44:18,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 111 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:44:18,025 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 214 flow [2023-11-28 20:44:18,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-28 20:44:18,026 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-11-28 20:44:18,026 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 214 flow [2023-11-28 20:44:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 20:44:18,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:18,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:18,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:44:18,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:18,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1929494968, now seen corresponding path program 1 times [2023-11-28 20:44:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:18,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227432225] [2023-11-28 20:44:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:18,131 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 20:44:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:18,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227432225] [2023-11-28 20:44:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227432225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:18,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:18,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:44:18,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130686440] [2023-11-28 20:44:18,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:18,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:44:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:18,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:44:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:44:18,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2023-11-28 20:44:18,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 20:44:18,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:18,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2023-11-28 20:44:18,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:18,505 INFO L124 PetriNetUnfolderBase]: 836/1831 cut-off events. [2023-11-28 20:44:18,505 INFO L125 PetriNetUnfolderBase]: For 1326/1366 co-relation queries the response was YES. [2023-11-28 20:44:18,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 1831 events. 836/1831 cut-off events. For 1326/1366 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9497 event pairs, 229 based on Foata normal form. 32/1827 useless extension candidates. Maximal degree in co-relation 3841. Up to 697 conditions per place. [2023-11-28 20:44:18,517 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 89 selfloop transitions, 12 changer transitions 5/118 dead transitions. [2023-11-28 20:44:18,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 643 flow [2023-11-28 20:44:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:44:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:44:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2023-11-28 20:44:18,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378151260504201 [2023-11-28 20:44:18,518 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 192 transitions. [2023-11-28 20:44:18,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 192 transitions. [2023-11-28 20:44:18,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:18,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 192 transitions. [2023-11-28 20:44:18,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 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 20:44:18,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 20:44:18,521 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 20:44:18,521 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 214 flow. Second operand 7 states and 192 transitions. [2023-11-28 20:44:18,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 643 flow [2023-11-28 20:44:18,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 118 transitions, 637 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:44:18,527 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 308 flow [2023-11-28 20:44:18,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2023-11-28 20:44:18,529 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2023-11-28 20:44:18,529 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 308 flow [2023-11-28 20:44:18,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 20:44:18,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:18,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:18,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:44:18,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:18,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:18,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2036819457, now seen corresponding path program 1 times [2023-11-28 20:44:18,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:18,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711211675] [2023-11-28 20:44:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:18,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:18,595 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 20:44:18,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:18,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711211675] [2023-11-28 20:44:18,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711211675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:18,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:18,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:44:18,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586184163] [2023-11-28 20:44:18,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:18,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:44:18,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:18,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:44:18,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:44:18,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2023-11-28 20:44:18,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:18,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:18,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2023-11-28 20:44:18,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:18,921 INFO L124 PetriNetUnfolderBase]: 1034/2283 cut-off events. [2023-11-28 20:44:18,922 INFO L125 PetriNetUnfolderBase]: For 2306/2380 co-relation queries the response was YES. [2023-11-28 20:44:18,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5584 conditions, 2283 events. 1034/2283 cut-off events. For 2306/2380 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13091 event pairs, 584 based on Foata normal form. 80/2294 useless extension candidates. Maximal degree in co-relation 5016. Up to 1342 conditions per place. [2023-11-28 20:44:18,937 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 83 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-11-28 20:44:18,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 681 flow [2023-11-28 20:44:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:44:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:44:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2023-11-28 20:44:18,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696078431372549 [2023-11-28 20:44:18,939 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 142 transitions. [2023-11-28 20:44:18,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 142 transitions. [2023-11-28 20:44:18,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:18,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 142 transitions. [2023-11-28 20:44:18,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 20:44:18,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:18,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:18,941 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 308 flow. Second operand 4 states and 142 transitions. [2023-11-28 20:44:18,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 681 flow [2023-11-28 20:44:18,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 661 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-28 20:44:18,948 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 320 flow [2023-11-28 20:44:18,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2023-11-28 20:44:18,949 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2023-11-28 20:44:18,949 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 320 flow [2023-11-28 20:44:18,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:18,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:18,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:18,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:44:18,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:18,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:18,950 INFO L85 PathProgramCache]: Analyzing trace with hash -795177015, now seen corresponding path program 1 times [2023-11-28 20:44:18,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:18,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502960148] [2023-11-28 20:44:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:18,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:44:19,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:19,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502960148] [2023-11-28 20:44:19,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502960148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:44:19,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18518698] [2023-11-28 20:44:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:19,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:19,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:19,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:44:19,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:44:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:19,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 20:44:19,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:44:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 20:44:19,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:44:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 20:44:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18518698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:44:19,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:44:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2023-11-28 20:44:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73213586] [2023-11-28 20:44:19,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:44:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:44:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:44:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:44:19,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2023-11-28 20:44:19,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 12 states have internal predecessors, (190), 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 20:44:19,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:19,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2023-11-28 20:44:19,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:19,885 INFO L124 PetriNetUnfolderBase]: 1123/2327 cut-off events. [2023-11-28 20:44:19,885 INFO L125 PetriNetUnfolderBase]: For 2810/2958 co-relation queries the response was YES. [2023-11-28 20:44:19,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6413 conditions, 2327 events. 1123/2327 cut-off events. For 2810/2958 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12618 event pairs, 135 based on Foata normal form. 74/2395 useless extension candidates. Maximal degree in co-relation 5840. Up to 780 conditions per place. [2023-11-28 20:44:19,906 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 83 selfloop transitions, 18 changer transitions 3/114 dead transitions. [2023-11-28 20:44:19,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 707 flow [2023-11-28 20:44:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:44:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:44:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2023-11-28 20:44:19,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2023-11-28 20:44:19,908 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 168 transitions. [2023-11-28 20:44:19,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 168 transitions. [2023-11-28 20:44:19,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:19,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 168 transitions. [2023-11-28 20:44:19,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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 20:44:19,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 20:44:19,911 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 20:44:19,911 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 320 flow. Second operand 7 states and 168 transitions. [2023-11-28 20:44:19,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 707 flow [2023-11-28 20:44:19,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 114 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:44:19,918 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 360 flow [2023-11-28 20:44:19,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-11-28 20:44:19,919 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-11-28 20:44:19,937 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 360 flow [2023-11-28 20:44:19,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 12 states have internal predecessors, (190), 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 20:44:19,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:19,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:19,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:44:20,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:20,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:20,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash -811524777, now seen corresponding path program 1 times [2023-11-28 20:44:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:20,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666836518] [2023-11-28 20:44:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:20,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:44:20,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:20,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666836518] [2023-11-28 20:44:20,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666836518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:44:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999489324] [2023-11-28 20:44:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:20,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:20,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:20,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:44:20,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:44:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:20,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:44:20,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:44:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:44:20,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:44:20,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999489324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:20,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:44:20,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-28 20:44:20,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546220305] [2023-11-28 20:44:20,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:20,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:44:20,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:44:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:44:20,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-28 20:44:20,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 20:44:20,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:20,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-28 20:44:20,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:20,875 INFO L124 PetriNetUnfolderBase]: 1188/2523 cut-off events. [2023-11-28 20:44:20,875 INFO L125 PetriNetUnfolderBase]: For 4385/4423 co-relation queries the response was YES. [2023-11-28 20:44:20,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7090 conditions, 2523 events. 1188/2523 cut-off events. For 4385/4423 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14419 event pairs, 312 based on Foata normal form. 58/2511 useless extension candidates. Maximal degree in co-relation 6892. Up to 1388 conditions per place. [2023-11-28 20:44:20,899 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 69 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-11-28 20:44:20,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 91 transitions, 656 flow [2023-11-28 20:44:20,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:44:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:44:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2023-11-28 20:44:20,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2023-11-28 20:44:20,901 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 122 transitions. [2023-11-28 20:44:20,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 122 transitions. [2023-11-28 20:44:20,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:20,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 122 transitions. [2023-11-28 20:44:20,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 20:44:20,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:20,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:20,902 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 360 flow. Second operand 4 states and 122 transitions. [2023-11-28 20:44:20,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 91 transitions, 656 flow [2023-11-28 20:44:20,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 604 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-28 20:44:20,909 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 329 flow [2023-11-28 20:44:20,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-11-28 20:44:20,910 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-11-28 20:44:20,910 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 329 flow [2023-11-28 20:44:20,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 20:44:20,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:20,911 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:20,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:44:21,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:21,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:21,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash 546828551, now seen corresponding path program 1 times [2023-11-28 20:44:21,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:21,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146969299] [2023-11-28 20:44:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:21,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:44:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:21,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146969299] [2023-11-28 20:44:21,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146969299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:44:21,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797824221] [2023-11-28 20:44:21,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:21,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:21,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:21,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:44:21,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:44:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:21,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:44:21,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:44:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:44:21,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:44:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797824221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:21,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:44:21,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-28 20:44:21,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981972212] [2023-11-28 20:44:21,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:21,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:44:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:44:21,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:44:21,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2023-11-28 20:44:21,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 20:44:21,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:21,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2023-11-28 20:44:21,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:21,873 INFO L124 PetriNetUnfolderBase]: 1053/2301 cut-off events. [2023-11-28 20:44:21,873 INFO L125 PetriNetUnfolderBase]: For 3337/3383 co-relation queries the response was YES. [2023-11-28 20:44:21,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6286 conditions, 2301 events. 1053/2301 cut-off events. For 3337/3383 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12932 event pairs, 91 based on Foata normal form. 68/2298 useless extension candidates. Maximal degree in co-relation 5704. Up to 960 conditions per place. [2023-11-28 20:44:21,893 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 108 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2023-11-28 20:44:21,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 863 flow [2023-11-28 20:44:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:44:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:44:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2023-11-28 20:44:21,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2023-11-28 20:44:21,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 201 transitions. [2023-11-28 20:44:21,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 201 transitions. [2023-11-28 20:44:21,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:21,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 201 transitions. [2023-11-28 20:44:21,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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 20:44:21,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 20:44:21,897 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 20:44:21,898 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 329 flow. Second operand 6 states and 201 transitions. [2023-11-28 20:44:21,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 863 flow [2023-11-28 20:44:21,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 130 transitions, 823 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:44:21,906 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 325 flow [2023-11-28 20:44:21,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-11-28 20:44:21,907 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2023-11-28 20:44:21,907 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 325 flow [2023-11-28 20:44:21,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 20:44:21,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:21,907 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:21,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:44:22,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-28 20:44:22,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:22,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash 739702747, now seen corresponding path program 1 times [2023-11-28 20:44:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:22,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152298016] [2023-11-28 20:44:22,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:22,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:44:22,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:22,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152298016] [2023-11-28 20:44:22,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152298016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:22,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:22,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:44:22,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335582397] [2023-11-28 20:44:22,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:22,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:44:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:44:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:44:22,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-28 20:44:22,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:22,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:22,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-28 20:44:22,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:22,445 INFO L124 PetriNetUnfolderBase]: 1093/2377 cut-off events. [2023-11-28 20:44:22,445 INFO L125 PetriNetUnfolderBase]: For 3638/3645 co-relation queries the response was YES. [2023-11-28 20:44:22,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6544 conditions, 2377 events. 1093/2377 cut-off events. For 3638/3645 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13280 event pairs, 325 based on Foata normal form. 0/2353 useless extension candidates. Maximal degree in co-relation 5125. Up to 1059 conditions per place. [2023-11-28 20:44:22,459 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 81 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2023-11-28 20:44:22,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 745 flow [2023-11-28 20:44:22,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:44:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:44:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2023-11-28 20:44:22,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2023-11-28 20:44:22,461 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 128 transitions. [2023-11-28 20:44:22,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 128 transitions. [2023-11-28 20:44:22,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:22,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 128 transitions. [2023-11-28 20:44:22,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 20:44:22,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:22,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:22,462 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 325 flow. Second operand 4 states and 128 transitions. [2023-11-28 20:44:22,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 745 flow [2023-11-28 20:44:22,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 103 transitions, 730 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:44:22,469 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 336 flow [2023-11-28 20:44:22,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-11-28 20:44:22,470 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2023-11-28 20:44:22,470 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 336 flow [2023-11-28 20:44:22,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:22,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:22,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:22,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:44:22,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:22,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:22,471 INFO L85 PathProgramCache]: Analyzing trace with hash -274442315, now seen corresponding path program 1 times [2023-11-28 20:44:22,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:22,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324628804] [2023-11-28 20:44:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:22,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:44:22,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:22,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324628804] [2023-11-28 20:44:22,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324628804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:22,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:22,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:44:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401099150] [2023-11-28 20:44:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:22,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:44:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:44:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:44:22,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-28 20:44:22,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:22,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:22,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-28 20:44:22,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:22,869 INFO L124 PetriNetUnfolderBase]: 1084/2294 cut-off events. [2023-11-28 20:44:22,869 INFO L125 PetriNetUnfolderBase]: For 3921/3923 co-relation queries the response was YES. [2023-11-28 20:44:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6555 conditions, 2294 events. 1084/2294 cut-off events. For 3921/3923 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 12447 event pairs, 223 based on Foata normal form. 68/2355 useless extension candidates. Maximal degree in co-relation 5900. Up to 1121 conditions per place. [2023-11-28 20:44:22,887 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 74 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-11-28 20:44:22,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 663 flow [2023-11-28 20:44:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:44:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:44:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2023-11-28 20:44:22,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2023-11-28 20:44:22,889 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 127 transitions. [2023-11-28 20:44:22,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 127 transitions. [2023-11-28 20:44:22,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:22,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 127 transitions. [2023-11-28 20:44:22,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 20:44:22,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:22,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 20:44:22,891 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 336 flow. Second operand 4 states and 127 transitions. [2023-11-28 20:44:22,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 663 flow [2023-11-28 20:44:22,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 638 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-28 20:44:22,900 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 340 flow [2023-11-28 20:44:22,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-11-28 20:44:22,901 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2023-11-28 20:44:22,901 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 340 flow [2023-11-28 20:44:22,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:22,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:44:22,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:22,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:44:22,902 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-28 20:44:22,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1928480886, now seen corresponding path program 1 times [2023-11-28 20:44:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:22,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862902401] [2023-11-28 20:44:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 20:44:22,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:22,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862902401] [2023-11-28 20:44:22,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862902401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:44:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354772145] [2023-11-28 20:44:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:22,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:44:22,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:44:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:44:23,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2023-11-28 20:44:23,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 20:44:23,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:44:23,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2023-11-28 20:44:23,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:23,295 INFO L124 PetriNetUnfolderBase]: 987/2134 cut-off events. [2023-11-28 20:44:23,296 INFO L125 PetriNetUnfolderBase]: For 4159/4161 co-relation queries the response was YES. [2023-11-28 20:44:23,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 2134 events. 987/2134 cut-off events. For 4159/4161 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 11636 event pairs, 698 based on Foata normal form. 14/2130 useless extension candidates. Maximal degree in co-relation 5596. Up to 1521 conditions per place. [2023-11-28 20:44:23,303 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2023-11-28 20:44:23,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 534 flow [2023-11-28 20:44:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:44:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:44:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-28 20:44:23,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-28 20:44:23,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-28 20:44:23,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-28 20:44:23,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:23,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-28 20:44:23,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 20:44:23,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 20:44:23,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 20:44:23,306 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 340 flow. Second operand 5 states and 119 transitions. [2023-11-28 20:44:23,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 534 flow [2023-11-28 20:44:23,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:44:23,314 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-11-28 20:44:23,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-11-28 20:44:23,315 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2023-11-28 20:44:23,315 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-11-28 20:44:23,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 20:44:23,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-11-28 20:44:23,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-28 20:44:23,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-28 20:44:23,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-28 20:44:23,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-28 20:44:23,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-28 20:44:23,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-28 20:44:23,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-28 20:44:23,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-11-28 20:44:23,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-28 20:44:23,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-28 20:44:23,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-28 20:44:23,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-28 20:44:23,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-28 20:44:23,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-28 20:44:23,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-28 20:44:23,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-28 20:44:23,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-28 20:44:23,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:44:23,320 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:23,326 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 20:44:23,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:44:23,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:44:23 BasicIcfg [2023-11-28 20:44:23,331 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:44:23,332 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:44:23,332 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:44:23,332 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:44:23,332 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:44:15" (3/4) ... [2023-11-28 20:44:23,334 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 20:44:23,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-28 20:44:23,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-28 20:44:23,342 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 73 nodes and edges [2023-11-28 20:44:23,343 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-28 20:44:23,343 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-28 20:44:23,343 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-28 20:44:23,427 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:44:23,428 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 20:44:23,428 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:44:23,428 INFO L158 Benchmark]: Toolchain (without parser) took 9183.46ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 97.0MB in the beginning and 47.7MB in the end (delta: 49.3MB). Peak memory consumption was 118.5MB. Max. memory is 16.1GB. [2023-11-28 20:44:23,429 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:44:23,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.68ms. Allocated memory is still 138.4MB. Free memory was 97.0MB in the beginning and 69.9MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-28 20:44:23,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.79ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 69.9MB in the beginning and 136.0MB in the end (delta: -66.1MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2023-11-28 20:44:23,430 INFO L158 Benchmark]: Boogie Preprocessor took 62.85ms. Allocated memory is still 169.9MB. Free memory was 136.0MB in the beginning and 134.8MB in the end (delta: 1.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-11-28 20:44:23,430 INFO L158 Benchmark]: RCFGBuilder took 701.88ms. Allocated memory is still 169.9MB. Free memory was 134.8MB in the beginning and 78.2MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2023-11-28 20:44:23,431 INFO L158 Benchmark]: TraceAbstraction took 7695.16ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 78.2MB in the beginning and 51.9MB in the end (delta: 26.3MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. [2023-11-28 20:44:23,431 INFO L158 Benchmark]: Witness Printer took 96.28ms. Allocated memory is still 205.5MB. Free memory was 51.9MB in the beginning and 47.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:44:23,437 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.68ms. Allocated memory is still 138.4MB. Free memory was 97.0MB in the beginning and 69.9MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.79ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 69.9MB in the beginning and 136.0MB in the end (delta: -66.1MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.85ms. Allocated memory is still 169.9MB. Free memory was 136.0MB in the beginning and 134.8MB in the end (delta: 1.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * RCFGBuilder took 701.88ms. Allocated memory is still 169.9MB. Free memory was 134.8MB in the beginning and 78.2MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7695.16ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 78.2MB in the beginning and 51.9MB in the end (delta: 26.3MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. * Witness Printer took 96.28ms. Allocated memory is still 205.5MB. Free memory was 51.9MB in the beginning and 47.7MB 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: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: 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, 88 locations, 18 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: 7.6s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 660 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 611 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1949 IncrementalHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 26 mSDtfsCounter, 1949 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=7, InterpolantAutomatonStates: 59, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 397 ConstructedInterpolants, 0 QuantifiedInterpolants, 1065 SizeOfPredicates, 6 NumberOfNonLiveVariables, 791 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 59/84 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 20:44:23,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb6c4f-d5cb-49c6-86bf-ec452ed0c563/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