./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8 --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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- 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-e04fb08 [2022-11-16 10:57:43,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:57:43,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:57:43,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:57:43,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:57:43,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:57:43,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:57:43,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:57:43,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:57:43,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:57:43,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:57:43,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:57:43,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:57:43,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:57:43,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:57:43,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:57:43,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:57:43,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:57:43,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:57:43,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:57:43,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:57:43,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:57:43,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:57:43,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:57:43,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:57:43,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:57:43,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:57:43,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:57:43,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:57:43,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:57:43,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:57:43,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:57:43,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:57:43,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:57:43,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:57:43,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:57:43,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:57:43,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:57:43,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:57:43,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:57:43,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:57:43,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:57:43,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:57:43,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:57:43,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:57:43,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:57:43,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:57:43,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:57:43,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:57:43,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:57:43,650 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:57:43,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:57:43,651 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:57:43,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:57:43,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:57:43,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:57:43,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:57:43,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:57:43,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:57:43,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:57:43,656 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:57:43,656 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:57:43,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:57:43,657 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:57:43,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:57:43,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:57:43,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:57:43,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:57:43,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:57:43,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:57:43,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:57:43,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:57:43,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:57:43,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:57:43,662 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:57:43,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:57:43,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:57:43,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2022-11-16 10:57:43,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:57:44,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:57:44,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:57:44,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:57:44,025 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:57:44,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-16 10:57:44,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/data/09e5934ae/6bdf04209b244729914f60a51cd52dee/FLAGa06b9fa28 [2022-11-16 10:57:44,771 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:57:44,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-16 10:57:44,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/data/09e5934ae/6bdf04209b244729914f60a51cd52dee/FLAGa06b9fa28 [2022-11-16 10:57:45,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/data/09e5934ae/6bdf04209b244729914f60a51cd52dee [2022-11-16 10:57:45,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:57:45,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:57:45,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:57:45,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:57:45,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:57:45,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:45,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4a1aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45, skipping insertion in model container [2022-11-16 10:57:45,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:45,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:57:45,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:57:45,759 WARN L229 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_71df0abd-686c-4a44-a6d5-d40109dda78c/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-16 10:57:45,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:57:45,874 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:57:45,906 WARN L229 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_71df0abd-686c-4a44-a6d5-d40109dda78c/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-16 10:57:45,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:57:45,998 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:57:45,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45 WrapperNode [2022-11-16 10:57:45,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:57:46,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:57:46,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:57:46,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:57:46,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,103 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 238 [2022-11-16 10:57:46,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:57:46,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:57:46,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:57:46,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:57:46,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:57:46,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:57:46,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:57:46,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:57:46,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (1/1) ... [2022-11-16 10:57:46,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:57:46,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:46,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:57:46,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:57:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:57:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 10:57:46,246 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 10:57:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 10:57:46,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:57:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:57:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 10:57:46,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 10:57:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:57:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 10:57:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:57:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:57:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 10:57:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:57:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:57:46,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:57:46,257 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:57:46,532 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:57:46,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:57:47,179 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:57:47,191 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:57:47,191 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-16 10:57:47,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:57:47 BoogieIcfgContainer [2022-11-16 10:57:47,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:57:47,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:57:47,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:57:47,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:57:47,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:57:45" (1/3) ... [2022-11-16 10:57:47,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3e60a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:57:47, skipping insertion in model container [2022-11-16 10:57:47,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:45" (2/3) ... [2022-11-16 10:57:47,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3e60a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:57:47, skipping insertion in model container [2022-11-16 10:57:47,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:57:47" (3/3) ... [2022-11-16 10:57:47,207 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2022-11-16 10:57:47,226 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:57:47,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:57:47,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-16 10:57:47,240 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:57:47,389 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 10:57:47,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 265 transitions, 552 flow [2022-11-16 10:57:47,693 INFO L130 PetriNetUnfolder]: 54/494 cut-off events. [2022-11-16 10:57:47,693 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-16 10:57:47,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 494 events. 54/494 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2028 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2022-11-16 10:57:47,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 265 transitions, 552 flow [2022-11-16 10:57:47,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 265 transitions, 552 flow [2022-11-16 10:57:47,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:57:47,744 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;@5e8825d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:57:47,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-16 10:57:47,759 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2022-11-16 10:57:47,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:57:47,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:47,760 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:47,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:47,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1190274131, now seen corresponding path program 1 times [2022-11-16 10:57:47,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:47,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955055847] [2022-11-16 10:57:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955055847] [2022-11-16 10:57:48,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955055847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:48,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:48,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:57:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600984119] [2022-11-16 10:57:48,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:48,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 10:57:48,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 10:57:48,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:57:48,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 265 [2022-11-16 10:57:48,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 265 transitions, 552 flow. Second operand has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2022-11-16 10:57:48,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:48,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 265 [2022-11-16 10:57:48,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:48,322 INFO L130 PetriNetUnfolder]: 15/453 cut-off events. [2022-11-16 10:57:48,322 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-16 10:57:48,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 453 events. 15/453 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1775 event pairs, 0 based on Foata normal form. 57/457 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2022-11-16 10:57:48,331 INFO L137 encePairwiseOnDemand]: 248/265 looper letters, 6 selfloop transitions, 0 changer transitions 0/247 dead transitions. [2022-11-16 10:57:48,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 247 transitions, 528 flow [2022-11-16 10:57:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 10:57:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 10:57:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 505 transitions. [2022-11-16 10:57:48,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9528301886792453 [2022-11-16 10:57:48,356 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 505 transitions. [2022-11-16 10:57:48,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 505 transitions. [2022-11-16 10:57:48,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:48,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 505 transitions. [2022-11-16 10:57:48,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 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) [2022-11-16 10:57:48,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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) [2022-11-16 10:57:48,378 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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) [2022-11-16 10:57:48,380 INFO L175 Difference]: Start difference. First operand has 245 places, 265 transitions, 552 flow. Second operand 2 states and 505 transitions. [2022-11-16 10:57:48,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 247 transitions, 528 flow [2022-11-16 10:57:48,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 247 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:57:48,392 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 516 flow [2022-11-16 10:57:48,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=516, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-16 10:57:48,400 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-11-16 10:57:48,401 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 516 flow [2022-11-16 10:57:48,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2022-11-16 10:57:48,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:48,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:48,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:57:48,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:48,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1061191412, now seen corresponding path program 1 times [2022-11-16 10:57:48,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:48,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951589532] [2022-11-16 10:57:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:48,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:48,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951589532] [2022-11-16 10:57:48,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951589532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:48,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:48,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728965385] [2022-11-16 10:57:48,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:48,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:57:48,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:57:48,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:57:48,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 265 [2022-11-16 10:57:48,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2022-11-16 10:57:48,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:48,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 265 [2022-11-16 10:57:48,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:48,769 INFO L130 PetriNetUnfolder]: 15/472 cut-off events. [2022-11-16 10:57:48,769 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-16 10:57:48,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 472 events. 15/472 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1765 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 513. Up to 20 conditions per place. [2022-11-16 10:57:48,775 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 17 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2022-11-16 10:57:48,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 252 transitions, 564 flow [2022-11-16 10:57:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:57:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 10:57:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-11-16 10:57:48,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044025157232705 [2022-11-16 10:57:48,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-11-16 10:57:48,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-11-16 10:57:48,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:48,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-11-16 10:57:48,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-16 10:57:48,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2022-11-16 10:57:48,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2022-11-16 10:57:48,802 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 516 flow. Second operand 3 states and 719 transitions. [2022-11-16 10:57:48,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 252 transitions, 564 flow [2022-11-16 10:57:48,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:57:48,811 INFO L231 Difference]: Finished difference. Result has 248 places, 248 transitions, 528 flow [2022-11-16 10:57:48,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=248, PETRI_TRANSITIONS=248} [2022-11-16 10:57:48,813 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 3 predicate places. [2022-11-16 10:57:48,813 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 248 transitions, 528 flow [2022-11-16 10:57:48,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2022-11-16 10:57:48,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:48,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:48,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:57:48,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:48,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1605645399, now seen corresponding path program 1 times [2022-11-16 10:57:48,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:48,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842823155] [2022-11-16 10:57:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:49,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:49,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842823155] [2022-11-16 10:57:49,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842823155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:49,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:49,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:49,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399834447] [2022-11-16 10:57:49,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:49,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:49,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:49,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:49,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:49,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-16 10:57:49,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 248 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 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) [2022-11-16 10:57:49,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:49,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-16 10:57:49,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:49,234 INFO L130 PetriNetUnfolder]: 15/471 cut-off events. [2022-11-16 10:57:49,234 INFO L131 PetriNetUnfolder]: For 34/50 co-relation queries the response was YES. [2022-11-16 10:57:49,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 471 events. 15/471 cut-off events. For 34/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1776 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 525. Up to 25 conditions per place. [2022-11-16 10:57:49,240 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 23 selfloop transitions, 4 changer transitions 0/255 dead transitions. [2022-11-16 10:57:49,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 255 transitions, 596 flow [2022-11-16 10:57:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1169 transitions. [2022-11-16 10:57:49,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8822641509433963 [2022-11-16 10:57:49,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1169 transitions. [2022-11-16 10:57:49,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1169 transitions. [2022-11-16 10:57:49,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:49,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1169 transitions. [2022-11-16 10:57:49,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.8) internal successors, (1169), 5 states have internal predecessors, (1169), 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) [2022-11-16 10:57:49,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 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) [2022-11-16 10:57:49,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 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) [2022-11-16 10:57:49,256 INFO L175 Difference]: Start difference. First operand has 248 places, 248 transitions, 528 flow. Second operand 5 states and 1169 transitions. [2022-11-16 10:57:49,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 255 transitions, 596 flow [2022-11-16 10:57:49,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 255 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:57:49,264 INFO L231 Difference]: Finished difference. Result has 254 places, 250 transitions, 552 flow [2022-11-16 10:57:49,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=254, PETRI_TRANSITIONS=250} [2022-11-16 10:57:49,268 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 9 predicate places. [2022-11-16 10:57:49,268 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 250 transitions, 552 flow [2022-11-16 10:57:49,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 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) [2022-11-16 10:57:49,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:49,270 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:49,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:57:49,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1582688669, now seen corresponding path program 1 times [2022-11-16 10:57:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:49,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177943218] [2022-11-16 10:57:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:49,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:49,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177943218] [2022-11-16 10:57:49,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177943218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:49,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567070805] [2022-11-16 10:57:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:49,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:49,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:49,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:57:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:49,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:57:49,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:49,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:49,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567070805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:49,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:49,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 10:57:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780888263] [2022-11-16 10:57:49,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:49,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 10:57:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 10:57:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 10:57:49,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-16 10:57:49,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 250 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 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) [2022-11-16 10:57:49,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:49,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-16 10:57:49,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:50,128 INFO L130 PetriNetUnfolder]: 15/491 cut-off events. [2022-11-16 10:57:50,129 INFO L131 PetriNetUnfolder]: For 40/56 co-relation queries the response was YES. [2022-11-16 10:57:50,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 491 events. 15/491 cut-off events. For 40/56 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1675 event pairs, 0 based on Foata normal form. 3/444 useless extension candidates. Maximal degree in co-relation 569. Up to 16 conditions per place. [2022-11-16 10:57:50,135 INFO L137 encePairwiseOnDemand]: 257/265 looper letters, 26 selfloop transitions, 11 changer transitions 0/265 dead transitions. [2022-11-16 10:57:50,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 265 transitions, 664 flow [2022-11-16 10:57:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 10:57:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 10:57:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2548 transitions. [2022-11-16 10:57:50,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740994854202402 [2022-11-16 10:57:50,144 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2548 transitions. [2022-11-16 10:57:50,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2548 transitions. [2022-11-16 10:57:50,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:50,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2548 transitions. [2022-11-16 10:57:50,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.63636363636363) internal successors, (2548), 11 states have internal predecessors, (2548), 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) [2022-11-16 10:57:50,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 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) [2022-11-16 10:57:50,162 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 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) [2022-11-16 10:57:50,162 INFO L175 Difference]: Start difference. First operand has 254 places, 250 transitions, 552 flow. Second operand 11 states and 2548 transitions. [2022-11-16 10:57:50,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 265 transitions, 664 flow [2022-11-16 10:57:50,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 265 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:57:50,169 INFO L231 Difference]: Finished difference. Result has 267 places, 255 transitions, 614 flow [2022-11-16 10:57:50,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=614, PETRI_PLACES=267, PETRI_TRANSITIONS=255} [2022-11-16 10:57:50,170 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 22 predicate places. [2022-11-16 10:57:50,171 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 255 transitions, 614 flow [2022-11-16 10:57:50,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 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) [2022-11-16 10:57:50,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:50,173 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:50,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:50,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:50,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:50,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash 724855385, now seen corresponding path program 1 times [2022-11-16 10:57:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:50,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706007739] [2022-11-16 10:57:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:50,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:50,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706007739] [2022-11-16 10:57:50,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706007739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:50,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858883065] [2022-11-16 10:57:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:50,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:50,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:50,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:50,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:57:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:50,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:57:50,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:51,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:51,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858883065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:51,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:51,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:57:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672983618] [2022-11-16 10:57:51,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:51,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:57:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:51,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:57:51,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:57:51,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-16 10:57:51,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 255 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 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) [2022-11-16 10:57:51,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:51,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-16 10:57:51,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:51,278 INFO L130 PetriNetUnfolder]: 15/489 cut-off events. [2022-11-16 10:57:51,278 INFO L131 PetriNetUnfolder]: For 61/77 co-relation queries the response was YES. [2022-11-16 10:57:51,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 489 events. 15/489 cut-off events. For 61/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1674 event pairs, 0 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 584. Up to 22 conditions per place. [2022-11-16 10:57:51,284 INFO L137 encePairwiseOnDemand]: 260/265 looper letters, 22 selfloop transitions, 8 changer transitions 0/258 dead transitions. [2022-11-16 10:57:51,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 258 transitions, 672 flow [2022-11-16 10:57:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:57:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:57:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1623 transitions. [2022-11-16 10:57:51,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8749326145552561 [2022-11-16 10:57:51,290 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1623 transitions. [2022-11-16 10:57:51,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1623 transitions. [2022-11-16 10:57:51,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:51,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1623 transitions. [2022-11-16 10:57:51,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 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) [2022-11-16 10:57:51,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 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) [2022-11-16 10:57:51,301 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 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) [2022-11-16 10:57:51,301 INFO L175 Difference]: Start difference. First operand has 267 places, 255 transitions, 614 flow. Second operand 7 states and 1623 transitions. [2022-11-16 10:57:51,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 258 transitions, 672 flow [2022-11-16 10:57:51,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 258 transitions, 658 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 10:57:51,309 INFO L231 Difference]: Finished difference. Result has 267 places, 253 transitions, 602 flow [2022-11-16 10:57:51,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=602, PETRI_PLACES=267, PETRI_TRANSITIONS=253} [2022-11-16 10:57:51,311 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 22 predicate places. [2022-11-16 10:57:51,311 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 253 transitions, 602 flow [2022-11-16 10:57:51,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 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) [2022-11-16 10:57:51,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:51,312 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:51,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:51,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:51,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:51,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1691615913, now seen corresponding path program 1 times [2022-11-16 10:57:51,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:51,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070686823] [2022-11-16 10:57:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 10:57:51,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:51,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070686823] [2022-11-16 10:57:51,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070686823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:51,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:51,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:51,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127771373] [2022-11-16 10:57:51,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:51,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:51,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:51,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-16 10:57:51,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 253 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 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) [2022-11-16 10:57:51,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:51,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-16 10:57:51,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:51,928 INFO L130 PetriNetUnfolder]: 15/488 cut-off events. [2022-11-16 10:57:51,928 INFO L131 PetriNetUnfolder]: For 62/78 co-relation queries the response was YES. [2022-11-16 10:57:51,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 488 events. 15/488 cut-off events. For 62/78 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1676 event pairs, 0 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 581. Up to 17 conditions per place. [2022-11-16 10:57:51,935 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 13 selfloop transitions, 12 changer transitions 0/253 dead transitions. [2022-11-16 10:57:51,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 253 transitions, 650 flow [2022-11-16 10:57:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1159 transitions. [2022-11-16 10:57:51,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8747169811320755 [2022-11-16 10:57:51,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1159 transitions. [2022-11-16 10:57:51,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1159 transitions. [2022-11-16 10:57:51,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:51,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1159 transitions. [2022-11-16 10:57:51,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 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) [2022-11-16 10:57:51,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 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) [2022-11-16 10:57:51,955 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 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) [2022-11-16 10:57:51,956 INFO L175 Difference]: Start difference. First operand has 267 places, 253 transitions, 602 flow. Second operand 5 states and 1159 transitions. [2022-11-16 10:57:51,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 253 transitions, 650 flow [2022-11-16 10:57:51,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 253 transitions, 631 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-16 10:57:51,969 INFO L231 Difference]: Finished difference. Result has 263 places, 253 transitions, 613 flow [2022-11-16 10:57:51,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=613, PETRI_PLACES=263, PETRI_TRANSITIONS=253} [2022-11-16 10:57:51,974 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 18 predicate places. [2022-11-16 10:57:51,974 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 253 transitions, 613 flow [2022-11-16 10:57:51,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 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) [2022-11-16 10:57:51,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:51,975 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:51,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:57:51,976 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:51,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2079168977, now seen corresponding path program 2 times [2022-11-16 10:57:51,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:51,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347074942] [2022-11-16 10:57:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:51,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-16 10:57:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:52,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347074942] [2022-11-16 10:57:52,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347074942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:52,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:52,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095771235] [2022-11-16 10:57:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:52,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:52,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:52,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 265 [2022-11-16 10:57:52,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 253 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 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) [2022-11-16 10:57:52,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:52,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 265 [2022-11-16 10:57:52,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:52,322 INFO L130 PetriNetUnfolder]: 10/371 cut-off events. [2022-11-16 10:57:52,323 INFO L131 PetriNetUnfolder]: For 55/101 co-relation queries the response was YES. [2022-11-16 10:57:52,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 371 events. 10/371 cut-off events. For 55/101 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 918 event pairs, 0 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 453. Up to 15 conditions per place. [2022-11-16 10:57:52,327 INFO L137 encePairwiseOnDemand]: 258/265 looper letters, 14 selfloop transitions, 4 changer transitions 0/253 dead transitions. [2022-11-16 10:57:52,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 253 transitions, 649 flow [2022-11-16 10:57:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1166 transitions. [2022-11-16 10:57:52,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-16 10:57:52,333 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1166 transitions. [2022-11-16 10:57:52,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1166 transitions. [2022-11-16 10:57:52,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:52,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1166 transitions. [2022-11-16 10:57:52,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.2) internal successors, (1166), 5 states have internal predecessors, (1166), 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) [2022-11-16 10:57:52,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 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) [2022-11-16 10:57:52,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 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) [2022-11-16 10:57:52,342 INFO L175 Difference]: Start difference. First operand has 263 places, 253 transitions, 613 flow. Second operand 5 states and 1166 transitions. [2022-11-16 10:57:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 253 transitions, 649 flow [2022-11-16 10:57:52,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 253 transitions, 631 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:57:52,356 INFO L231 Difference]: Finished difference. Result has 263 places, 251 transitions, 603 flow [2022-11-16 10:57:52,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=263, PETRI_TRANSITIONS=251} [2022-11-16 10:57:52,358 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 18 predicate places. [2022-11-16 10:57:52,359 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 251 transitions, 603 flow [2022-11-16 10:57:52,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 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) [2022-11-16 10:57:52,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:52,360 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:52,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:57:52,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1827436408, now seen corresponding path program 1 times [2022-11-16 10:57:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:52,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42094400] [2022-11-16 10:57:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 10:57:52,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:52,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42094400] [2022-11-16 10:57:52,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42094400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:52,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818472616] [2022-11-16 10:57:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:52,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:52,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:52,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:52,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:57:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:52,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:57:52,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 10:57:53,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 10:57:53,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818472616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:53,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:53,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 10:57:53,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567794786] [2022-11-16 10:57:53,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:53,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 10:57:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 10:57:53,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 10:57:53,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-16 10:57:53,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 251 transitions, 603 flow. Second operand has 18 states, 18 states have (on average 231.44444444444446) internal successors, (4166), 18 states have internal predecessors, (4166), 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) [2022-11-16 10:57:53,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:53,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-16 10:57:53,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:53,787 INFO L130 PetriNetUnfolder]: 10/443 cut-off events. [2022-11-16 10:57:53,787 INFO L131 PetriNetUnfolder]: For 85/99 co-relation queries the response was YES. [2022-11-16 10:57:53,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 443 events. 10/443 cut-off events. For 85/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 928 event pairs, 0 based on Foata normal form. 4/413 useless extension candidates. Maximal degree in co-relation 609. Up to 15 conditions per place. [2022-11-16 10:57:53,793 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 45 selfloop transitions, 21 changer transitions 0/292 dead transitions. [2022-11-16 10:57:53,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 292 transitions, 901 flow [2022-11-16 10:57:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 10:57:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 10:57:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4858 transitions. [2022-11-16 10:57:53,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8729559748427673 [2022-11-16 10:57:53,805 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4858 transitions. [2022-11-16 10:57:53,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4858 transitions. [2022-11-16 10:57:53,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:53,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4858 transitions. [2022-11-16 10:57:53,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 231.33333333333334) internal successors, (4858), 21 states have internal predecessors, (4858), 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) [2022-11-16 10:57:53,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 265.0) internal successors, (5830), 22 states have internal predecessors, (5830), 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) [2022-11-16 10:57:53,847 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 265.0) internal successors, (5830), 22 states have internal predecessors, (5830), 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) [2022-11-16 10:57:53,856 INFO L175 Difference]: Start difference. First operand has 263 places, 251 transitions, 603 flow. Second operand 21 states and 4858 transitions. [2022-11-16 10:57:53,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 292 transitions, 901 flow [2022-11-16 10:57:53,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 292 transitions, 893 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:57:53,864 INFO L231 Difference]: Finished difference. Result has 284 places, 264 transitions, 751 flow [2022-11-16 10:57:53,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=751, PETRI_PLACES=284, PETRI_TRANSITIONS=264} [2022-11-16 10:57:53,867 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 39 predicate places. [2022-11-16 10:57:53,868 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 264 transitions, 751 flow [2022-11-16 10:57:53,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 231.44444444444446) internal successors, (4166), 18 states have internal predecessors, (4166), 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) [2022-11-16 10:57:53,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:53,873 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:53,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:54,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 10:57:54,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:54,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash -894204588, now seen corresponding path program 2 times [2022-11-16 10:57:54,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:54,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699172282] [2022-11-16 10:57:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 10:57:54,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:54,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699172282] [2022-11-16 10:57:54,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699172282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259866860] [2022-11-16 10:57:54,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:57:54,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:54,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:54,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:54,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:57:55,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:57:55,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:55,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 10:57:55,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 10:57:55,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:57:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 10:57:56,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259866860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:57:56,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:57:56,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-16 10:57:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885723423] [2022-11-16 10:57:56,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:57:56,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 10:57:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 10:57:56,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 10:57:56,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-16 10:57:56,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 264 transitions, 751 flow. Second operand has 34 states, 34 states have (on average 231.7058823529412) internal successors, (7878), 34 states have internal predecessors, (7878), 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) [2022-11-16 10:57:56,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:56,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-16 10:57:56,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:57,150 INFO L130 PetriNetUnfolder]: 10/587 cut-off events. [2022-11-16 10:57:57,151 INFO L131 PetriNetUnfolder]: For 432/446 co-relation queries the response was YES. [2022-11-16 10:57:57,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 587 events. 10/587 cut-off events. For 432/446 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 928 event pairs, 0 based on Foata normal form. 8/561 useless extension candidates. Maximal degree in co-relation 978. Up to 19 conditions per place. [2022-11-16 10:57:57,156 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 85 selfloop transitions, 45 changer transitions 0/356 dead transitions. [2022-11-16 10:57:57,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 356 transitions, 1479 flow [2022-11-16 10:57:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 10:57:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 10:57:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10398 transitions. [2022-11-16 10:57:57,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719496855345912 [2022-11-16 10:57:57,183 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10398 transitions. [2022-11-16 10:57:57,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10398 transitions. [2022-11-16 10:57:57,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:57,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10398 transitions. [2022-11-16 10:57:57,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 231.06666666666666) internal successors, (10398), 45 states have internal predecessors, (10398), 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) [2022-11-16 10:57:57,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 265.0) internal successors, (12190), 46 states have internal predecessors, (12190), 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) [2022-11-16 10:57:57,238 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 265.0) internal successors, (12190), 46 states have internal predecessors, (12190), 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) [2022-11-16 10:57:57,238 INFO L175 Difference]: Start difference. First operand has 284 places, 264 transitions, 751 flow. Second operand 45 states and 10398 transitions. [2022-11-16 10:57:57,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 356 transitions, 1479 flow [2022-11-16 10:57:57,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 356 transitions, 1413 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-16 10:57:57,250 INFO L231 Difference]: Finished difference. Result has 330 places, 289 transitions, 1053 flow [2022-11-16 10:57:57,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1053, PETRI_PLACES=330, PETRI_TRANSITIONS=289} [2022-11-16 10:57:57,252 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 85 predicate places. [2022-11-16 10:57:57,252 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 289 transitions, 1053 flow [2022-11-16 10:57:57,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 231.7058823529412) internal successors, (7878), 34 states have internal predecessors, (7878), 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) [2022-11-16 10:57:57,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:57,255 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:57,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:57,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:57,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 10:57:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1782459660, now seen corresponding path program 3 times [2022-11-16 10:57:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:57,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006313015] [2022-11-16 10:57:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1905 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 10:58:00,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:00,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006313015] [2022-11-16 10:58:00,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006313015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:58:00,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112753453] [2022-11-16 10:58:00,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:58:00,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:00,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:00,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:00,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71df0abd-686c-4a44-a6d5-d40109dda78c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process