./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 01:42:00,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:42:00,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:42:00,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:42:00,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:42:00,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:42:00,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:42:00,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:42:00,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:42:00,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:42:00,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:42:00,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:42:00,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:42:00,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:42:00,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:42:00,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:42:00,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:42:00,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:42:00,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:42:00,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:42:00,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:42:00,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:42:00,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:42:00,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:42:00,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:42:00,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:42:00,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:42:00,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:42:00,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:42:00,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:42:00,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:42:00,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:42:00,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:42:00,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:42:00,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:42:00,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:42:00,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:42:00,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:42:00,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:42:00,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:42:00,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:42:00,986 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 01:42:01,007 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:42:01,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:42:01,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:42:01,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:42:01,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:42:01,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:42:01,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:42:01,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:42:01,010 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:42:01,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:42:01,011 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:42:01,011 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 01:42:01,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:42:01,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:42:01,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:42:01,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:42:01,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:42:01,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:42:01,013 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 01:42:01,013 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:42:01,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:42:01,014 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:42:01,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:42:01,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:42:01,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:42:01,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:42:01,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:42:01,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:42:01,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:42:01,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:42:01,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:42:01,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:42:01,016 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:42:01,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:42:01,017 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:42:01,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:42:01,017 INFO L138 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_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-11-23 01:42:01,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:42:01,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:42:01,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:42:01,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:42:01,284 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:42:01,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-23 01:42:04,290 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:42:04,530 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:42:04,531 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-23 01:42:04,538 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/data/751bf394a/2e2ac483162e4c09954e5081ab5e8d11/FLAG8be725238 [2022-11-23 01:42:04,550 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/data/751bf394a/2e2ac483162e4c09954e5081ab5e8d11 [2022-11-23 01:42:04,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:42:04,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:42:04,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:42:04,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:42:04,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:42:04,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad0f03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04, skipping insertion in model container [2022-11-23 01:42:04,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:42:04,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:42:04,759 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-23 01:42:04,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:42:04,775 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:42:04,807 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-23 01:42:04,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:42:04,827 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:42:04,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04 WrapperNode [2022-11-23 01:42:04,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:42:04,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:42:04,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:42:04,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:42:04,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,880 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 394 [2022-11-23 01:42:04,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:42:04,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:42:04,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:42:04,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:42:04,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,918 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:42:04,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:42:04,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:42:04,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:42:04,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (1/1) ... [2022-11-23 01:42:04,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:42:04,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:04,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:42:04,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:42:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:42:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:42:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 01:42:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 01:42:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 01:42:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 01:42:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 01:42:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 01:42:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 01:42:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 01:42:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-23 01:42:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-23 01:42:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:42:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 01:42:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 01:42:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 01:42:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:42:05,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:42:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:42:05,023 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 01:42:05,194 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:42:05,201 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:42:05,822 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:42:06,567 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:42:06,568 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-23 01:42:06,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:42:06 BoogieIcfgContainer [2022-11-23 01:42:06,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:42:06,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:42:06,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:42:06,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:42:06,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:42:04" (1/3) ... [2022-11-23 01:42:06,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618e1112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:42:06, skipping insertion in model container [2022-11-23 01:42:06,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:04" (2/3) ... [2022-11-23 01:42:06,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618e1112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:42:06, skipping insertion in model container [2022-11-23 01:42:06,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:42:06" (3/3) ... [2022-11-23 01:42:06,584 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-11-23 01:42:06,593 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 01:42:06,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:42:06,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-23 01:42:06,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 01:42:06,809 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 01:42:06,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 302 transitions, 636 flow [2022-11-23 01:42:07,025 INFO L130 PetriNetUnfolder]: 22/298 cut-off events. [2022-11-23 01:42:07,025 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-23 01:42:07,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 298 events. 22/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 301 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-11-23 01:42:07,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 302 transitions, 636 flow [2022-11-23 01:42:07,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 275 transitions, 571 flow [2022-11-23 01:42:07,048 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 01:42:07,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 275 transitions, 571 flow [2022-11-23 01:42:07,083 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 275 transitions, 571 flow [2022-11-23 01:42:07,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 275 transitions, 571 flow [2022-11-23 01:42:07,137 INFO L130 PetriNetUnfolder]: 21/275 cut-off events. [2022-11-23 01:42:07,138 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 01:42:07,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 275 events. 21/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 298 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-11-23 01:42:07,142 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2022-11-23 01:42:30,172 INFO L134 LiptonReduction]: Checked pairs total: 7176 [2022-11-23 01:42:30,173 INFO L136 LiptonReduction]: Total number of compositions: 283 [2022-11-23 01:42:30,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:42:30,202 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=LoopsAndPotentialCycles, 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;@7c6113c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:42:30,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-11-23 01:42:30,205 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 01:42:30,206 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:42:30,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:42:30,207 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 01:42:30,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-23 01:42:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 52467, now seen corresponding path program 1 times [2022-11-23 01:42:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:30,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805856258] [2022-11-23 01:42:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:42:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805856258] [2022-11-23 01:42:30,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805856258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:30,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:42:30,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 01:42:30,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277801478] [2022-11-23 01:42:30,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:30,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:42:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:30,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:42:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:42:30,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 585 [2022-11-23 01:42:30,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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) [2022-11-23 01:42:30,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:42:30,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 585 [2022-11-23 01:42:30,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:42:40,817 INFO L130 PetriNetUnfolder]: 45294/56452 cut-off events. [2022-11-23 01:42:40,817 INFO L131 PetriNetUnfolder]: For 924/924 co-relation queries the response was YES. [2022-11-23 01:42:40,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113835 conditions, 56452 events. 45294/56452 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 4584. Compared 312911 event pairs, 29191 based on Foata normal form. 0/17244 useless extension candidates. Maximal degree in co-relation 48897. Up to 27682 conditions per place. [2022-11-23 01:42:41,232 INFO L137 encePairwiseOnDemand]: 562/585 looper letters, 87 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-11-23 01:42:41,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2022-11-23 01:42:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:42:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:42:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2022-11-23 01:42:41,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4774928774928775 [2022-11-23 01:42:41,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2022-11-23 01:42:41,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2022-11-23 01:42:41,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:42:41,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2022-11-23 01:42:41,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 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) [2022-11-23 01:42:41,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 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) [2022-11-23 01:42:41,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 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) [2022-11-23 01:42:41,280 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 155 flow. Second operand 3 states and 838 transitions. [2022-11-23 01:42:41,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2022-11-23 01:42:41,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-23 01:42:41,408 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 176 flow [2022-11-23 01:42:41,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2022-11-23 01:42:41,415 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2022-11-23 01:42:41,416 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 176 flow [2022-11-23 01:42:41,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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) [2022-11-23 01:42:41,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:42:41,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 01:42:41,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:42:41,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-23 01:42:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:41,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1628383, now seen corresponding path program 1 times [2022-11-23 01:42:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460536805] [2022-11-23 01:42:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:41,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:42:41,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:41,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460536805] [2022-11-23 01:42:41,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460536805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:42:41,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368520916] [2022-11-23 01:42:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:41,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:41,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:42:41,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:42:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:41,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 01:42:41,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:42:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:42:41,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:42:41,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368520916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:42:41,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:42:41,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 01:42:41,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384563222] [2022-11-23 01:42:41,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:42:41,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:42:41,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:41,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:42:41,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:42:41,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 585 [2022-11-23 01:42:41,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 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) [2022-11-23 01:42:41,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:42:41,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 585 [2022-11-23 01:42:41,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:42:50,101 INFO L130 PetriNetUnfolder]: 45294/56449 cut-off events. [2022-11-23 01:42:50,102 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:42:50,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112863 conditions, 56449 events. 45294/56449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4584. Compared 312656 event pairs, 29191 based on Foata normal form. 0/17250 useless extension candidates. Maximal degree in co-relation 56421. Up to 27682 conditions per place. [2022-11-23 01:42:50,437 INFO L137 encePairwiseOnDemand]: 576/585 looper letters, 84 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2022-11-23 01:42:50,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 428 flow [2022-11-23 01:42:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:42:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 01:42:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1049 transitions. [2022-11-23 01:42:50,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4482905982905983 [2022-11-23 01:42:50,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1049 transitions. [2022-11-23 01:42:50,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1049 transitions. [2022-11-23 01:42:50,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:42:50,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1049 transitions. [2022-11-23 01:42:50,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 262.25) internal successors, (1049), 4 states have internal predecessors, (1049), 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) [2022-11-23 01:42:50,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 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) [2022-11-23 01:42:50,450 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 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) [2022-11-23 01:42:50,451 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 176 flow. Second operand 4 states and 1049 transitions. [2022-11-23 01:42:50,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 428 flow [2022-11-23 01:42:50,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 01:42:50,454 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 164 flow [2022-11-23 01:42:50,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2022-11-23 01:42:50,455 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2022-11-23 01:42:50,455 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 164 flow [2022-11-23 01:42:50,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 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) [2022-11-23 01:42:50,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:42:50,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 01:42:50,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 01:42:50,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 01:42:50,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-23 01:42:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:42:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1628382, now seen corresponding path program 1 times [2022-11-23 01:42:50,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:42:50,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646709970] [2022-11-23 01:42:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:50,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:42:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:42:50,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:42:50,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646709970] [2022-11-23 01:42:50,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646709970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:42:50,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534981462] [2022-11-23 01:42:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:42:50,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:42:50,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:42:50,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:42:50,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d0f4fb-ea7c-4187-86d0-029e7030db44/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:42:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:42:50,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 01:42:50,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:42:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:42:50,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:42:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:42:50,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534981462] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:42:50,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:42:50,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-23 01:42:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198704584] [2022-11-23 01:42:50,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:42:50,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:42:50,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:42:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:42:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:42:51,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 585 [2022-11-23 01:42:51,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 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) [2022-11-23 01:42:51,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:42:51,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 585 [2022-11-23 01:42:51,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand