./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme --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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:54,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:54,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:48:54,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:54,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:54,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:54,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:54,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:54,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:54,953 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:54,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:54,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:54,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:54,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:54,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:54,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:54,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:48:54,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:48:54,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:54,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:48:54,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:54,962 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:48:54,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:54,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:48:54,964 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:48:54,965 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:48:54,966 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:48:54,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:48:54,967 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:54,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:54,968 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:54,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:54,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:54,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:54,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:54,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:54,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:48:54,972 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:54,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:54,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:54,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:54,974 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:48:54,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:54,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:54,975 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_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2023-11-26 11:48:55,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:55,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:55,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:55,294 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:55,294 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:55,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-26 11:48:58,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:58,962 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:58,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-26 11:48:58,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/data/c50ebd92c/2faf9a375dbc4f0688e6b0d985bab45e/FLAG7debe2c24 [2023-11-26 11:48:58,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/data/c50ebd92c/2faf9a375dbc4f0688e6b0d985bab45e [2023-11-26 11:48:58,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:58,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:58,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:59,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:59,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:59,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:58" (1/1) ... [2023-11-26 11:48:59,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fae1d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59, skipping insertion in model container [2023-11-26 11:48:59,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:58" (1/1) ... [2023-11-26 11:48:59,057 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:59,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:59,423 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:59,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:59,538 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:59,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59 WrapperNode [2023-11-26 11:48:59,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:59,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:59,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:59,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:59,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,652 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 740 [2023-11-26 11:48:59,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:59,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:59,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:59,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:59,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,701 INFO L175 MemorySlicer]: Split 35 memory accesses to 5 slices as follows [2, 2, 2, 27, 2]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2023-11-26 11:48:59,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:59,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:59,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:59,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:59,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:59,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:59,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:48:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:48:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:48:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:48:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:48:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:48:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:48:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:48:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:48:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:48:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:48:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:48:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:48:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:48:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:48:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:48:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:48:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:48:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:48:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:48:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:48:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:59,850 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:49:00,083 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:00,087 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:01,280 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:02,206 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:02,206 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 11:49:02,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:02 BoogieIcfgContainer [2023-11-26 11:49:02,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:02,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:02,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:02,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:02,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:58" (1/3) ... [2023-11-26 11:49:02,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f226eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:02, skipping insertion in model container [2023-11-26 11:49:02,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (2/3) ... [2023-11-26 11:49:02,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f226eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:02, skipping insertion in model container [2023-11-26 11:49:02,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:02" (3/3) ... [2023-11-26 11:49:02,220 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-11-26 11:49:02,230 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:49:02,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:02,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-11-26 11:49:02,241 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:49:02,446 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:49:02,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 250 transitions, 521 flow [2023-11-26 11:49:02,650 INFO L124 PetriNetUnfolderBase]: 39/247 cut-off events. [2023-11-26 11:49:02,650 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:49:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 247 events. 39/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1437 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2023-11-26 11:49:02,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 250 transitions, 521 flow [2023-11-26 11:49:02,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 245 transitions, 505 flow [2023-11-26 11:49:02,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:02,698 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;@be23b87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:02,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2023-11-26 11:49:02,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:02,703 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:49:02,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:02,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:02,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:49:02,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-26 11:49:02,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:02,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2289972, now seen corresponding path program 1 times [2023-11-26 11:49:02,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:02,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721919747] [2023-11-26 11:49:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:02,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:03,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:03,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721919747] [2023-11-26 11:49:03,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721919747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:03,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:03,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:03,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291755641] [2023-11-26 11:49:03,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:03,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:03,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-26 11:49:03,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 245 transitions, 505 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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) [2023-11-26 11:49:03,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:03,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-26 11:49:03,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:28,204 INFO L124 PetriNetUnfolderBase]: 113811/204994 cut-off events. [2023-11-26 11:49:28,205 INFO L125 PetriNetUnfolderBase]: For 2275/2275 co-relation queries the response was YES. [2023-11-26 11:49:28,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352429 conditions, 204994 events. 113811/204994 cut-off events. For 2275/2275 co-relation queries the response was YES. Maximal size of possible extension queue 10481. Compared 2380908 event pairs, 74253 based on Foata normal form. 3681/167335 useless extension candidates. Maximal degree in co-relation 341590. Up to 145635 conditions per place. [2023-11-26 11:49:30,675 INFO L140 encePairwiseOnDemand]: 231/250 looper letters, 118 selfloop transitions, 10 changer transitions 0/251 dead transitions. [2023-11-26 11:49:30,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 251 transitions, 773 flow [2023-11-26 11:49:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:49:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 641 transitions. [2023-11-26 11:49:30,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641 [2023-11-26 11:49:30,706 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 641 transitions. [2023-11-26 11:49:30,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 641 transitions. [2023-11-26 11:49:30,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:30,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 641 transitions. [2023-11-26 11:49:30,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 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) [2023-11-26 11:49:30,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 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) [2023-11-26 11:49:30,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 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) [2023-11-26 11:49:30,737 INFO L175 Difference]: Start difference. First operand has 216 places, 245 transitions, 505 flow. Second operand 4 states and 641 transitions. [2023-11-26 11:49:30,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 251 transitions, 773 flow [2023-11-26 11:49:30,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 251 transitions, 764 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:49:30,820 INFO L231 Difference]: Finished difference. Result has 217 places, 251 transitions, 578 flow [2023-11-26 11:49:30,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=578, PETRI_PLACES=217, PETRI_TRANSITIONS=251} [2023-11-26 11:49:30,829 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2023-11-26 11:49:30,830 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 251 transitions, 578 flow [2023-11-26 11:49:30,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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) [2023-11-26 11:49:30,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:30,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:49:30,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:30,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-26 11:49:30,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash -496749115, now seen corresponding path program 1 times [2023-11-26 11:49:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:30,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322939213] [2023-11-26 11:49:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:30,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:31,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322939213] [2023-11-26 11:49:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322939213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:31,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734783664] [2023-11-26 11:49:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:31,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:31,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:31,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:31,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c52a690c-cd41-4e3b-ba56-804c7f521c59/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:31,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:49:31,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:31,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:31,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734783664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:31,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:31,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:49:31,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841702255] [2023-11-26 11:49:31,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:31,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:31,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:31,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:49:31,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-26 11:49:31,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 251 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 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) [2023-11-26 11:49:31,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:31,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-26 11:49:31,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand