./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --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_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/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_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/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_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- 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 12:52:19,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:52:19,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:52:19,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:52:19,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:52:19,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:52:19,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:52:19,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:52:19,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:52:19,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:52:19,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:52:19,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:52:19,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:52:19,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:52:19,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:52:19,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:52:19,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:52:19,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:52:19,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:52:19,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:52:19,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:52:19,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:52:19,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:52:19,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:52:19,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:52:19,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:52:19,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:52:19,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:52:19,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:52:19,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:52:19,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:52:19,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:52:19,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:52:19,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:52:19,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:52:19,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:52:19,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:52:19,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:52:19,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:52:19,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:52:19,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:52:19,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:52:19,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:52:19,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:52:19,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:52:19,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:52:19,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:52:19,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:52:19,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:52:19,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:52:19,911 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:52:19,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:52:19,912 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:52:19,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:52:19,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:52:19,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:52:19,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:52:19,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:52:19,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:52:19,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:52:19,913 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:52:19,913 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:52:19,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:52:19,914 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:52:19,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:52:19,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:52:19,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:52:19,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:52:19,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:19,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:52:19,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:52:19,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:52:19,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:52:19,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:52:19,921 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:52:19,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:52:19,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:52:19,922 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_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-16 12:52:20,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:52:20,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:52:20,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:52:20,275 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:52:20,276 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:52:20,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-16 12:52:20,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/data/71c93d4b1/7a9add7e021e4ce2a50f0d186a170015/FLAGa4b6dd24b [2022-11-16 12:52:20,898 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:52:20,899 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-16 12:52:20,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/data/71c93d4b1/7a9add7e021e4ce2a50f0d186a170015/FLAGa4b6dd24b [2022-11-16 12:52:21,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/data/71c93d4b1/7a9add7e021e4ce2a50f0d186a170015 [2022-11-16 12:52:21,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:52:21,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:52:21,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:21,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:52:21,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:52:21,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d72a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21, skipping insertion in model container [2022-11-16 12:52:21,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:52:21,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:52:21,547 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_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-16 12:52:21,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:21,566 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:52:21,599 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_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-16 12:52:21,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:21,620 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:52:21,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21 WrapperNode [2022-11-16 12:52:21,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:21,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:52:21,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:52:21,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:52:21,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,689 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 482 [2022-11-16 12:52:21,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:52:21,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:52:21,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:52:21,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:52:21,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,730 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:52:21,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:52:21,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:52:21,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:52:21,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (1/1) ... [2022-11-16 12:52:21,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:21,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:21,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:52:21,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:52:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:52:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:52:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:52:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:52:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:52:21,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:52:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:52:21,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:52:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:52:21,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:52:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 12:52:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 12:52:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:52:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-16 12:52:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-16 12:52:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-16 12:52:21,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-16 12:52:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:52:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:52:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:52:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:52:21,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:52:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:52:21,870 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 12:52:22,074 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:52:22,085 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:52:23,040 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:52:24,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:52:24,012 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 12:52:24,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:52:24 BoogieIcfgContainer [2022-11-16 12:52:24,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:52:24,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:52:24,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:52:24,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:52:24,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:52:21" (1/3) ... [2022-11-16 12:52:24,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d05f0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:52:24, skipping insertion in model container [2022-11-16 12:52:24,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:21" (2/3) ... [2022-11-16 12:52:24,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d05f0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:52:24, skipping insertion in model container [2022-11-16 12:52:24,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:52:24" (3/3) ... [2022-11-16 12:52:24,032 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-11-16 12:52:24,051 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:52:24,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:52:24,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2022-11-16 12:52:24,065 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:52:24,515 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-16 12:52:24,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 374 transitions, 820 flow [2022-11-16 12:52:24,854 INFO L130 PetriNetUnfolder]: 21/316 cut-off events. [2022-11-16 12:52:24,854 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:52:24,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 316 events. 21/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 556 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 263. Up to 3 conditions per place. [2022-11-16 12:52:24,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 374 transitions, 820 flow [2022-11-16 12:52:24,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 297 transitions, 639 flow [2022-11-16 12:52:24,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:52:24,891 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;@41d8e081, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:52:24,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2022-11-16 12:52:24,903 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-16 12:52:24,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:52:24,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:24,905 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:24,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-16 12:52:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash 503389698, now seen corresponding path program 1 times [2022-11-16 12:52:24,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:24,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299475757] [2022-11-16 12:52:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:24,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:25,587 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 12:52:25,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:25,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299475757] [2022-11-16 12:52:25,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299475757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:25,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:25,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:52:25,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884445725] [2022-11-16 12:52:25,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:25,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:52:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:25,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:52:25,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:52:25,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 378 [2022-11-16 12:52:25,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 297 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 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 12:52:25,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:25,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 378 [2022-11-16 12:52:25,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:35,055 INFO L130 PetriNetUnfolder]: 15409/21358 cut-off events. [2022-11-16 12:52:35,055 INFO L131 PetriNetUnfolder]: For 4925/4959 co-relation queries the response was YES. [2022-11-16 12:52:35,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46806 conditions, 21358 events. 15409/21358 cut-off events. For 4925/4959 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 139417 event pairs, 11952 based on Foata normal form. 2437/10156 useless extension candidates. Maximal degree in co-relation 46085. Up to 20612 conditions per place. [2022-11-16 12:52:35,403 INFO L137 encePairwiseOnDemand]: 345/378 looper letters, 72 selfloop transitions, 5 changer transitions 4/269 dead transitions. [2022-11-16 12:52:35,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 269 transitions, 745 flow [2022-11-16 12:52:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:52:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:52:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1284 transitions. [2022-11-16 12:52:35,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6793650793650794 [2022-11-16 12:52:35,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1284 transitions. [2022-11-16 12:52:35,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1284 transitions. [2022-11-16 12:52:35,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:52:35,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1284 transitions. [2022-11-16 12:52:35,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 256.8) internal successors, (1284), 5 states have internal predecessors, (1284), 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 12:52:35,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 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 12:52:35,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 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 12:52:35,467 INFO L175 Difference]: Start difference. First operand has 296 places, 297 transitions, 639 flow. Second operand 5 states and 1284 transitions. [2022-11-16 12:52:35,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 269 transitions, 745 flow [2022-11-16 12:52:35,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 716 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 12:52:35,497 INFO L231 Difference]: Finished difference. Result has 272 places, 265 transitions, 556 flow [2022-11-16 12:52:35,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=272, PETRI_TRANSITIONS=265} [2022-11-16 12:52:35,507 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -24 predicate places. [2022-11-16 12:52:35,507 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 265 transitions, 556 flow [2022-11-16 12:52:35,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 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 12:52:35,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:35,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:35,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:52:35,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-16 12:52:35,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1574787076, now seen corresponding path program 1 times [2022-11-16 12:52:35,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:35,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095292863] [2022-11-16 12:52:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:35,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:35,678 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 12:52:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:35,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095292863] [2022-11-16 12:52:35,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095292863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:35,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:35,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:52:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738392279] [2022-11-16 12:52:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:35,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:52:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:52:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:35,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 378 [2022-11-16 12:52:35,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 265 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 12:52:35,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:35,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 378 [2022-11-16 12:52:35,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:42,350 INFO L130 PetriNetUnfolder]: 15409/21353 cut-off events. [2022-11-16 12:52:42,351 INFO L131 PetriNetUnfolder]: For 1225/1259 co-relation queries the response was YES. [2022-11-16 12:52:42,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43256 conditions, 21353 events. 15409/21353 cut-off events. For 1225/1259 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 138984 event pairs, 11952 based on Foata normal form. 0/7719 useless extension candidates. Maximal degree in co-relation 43173. Up to 20598 conditions per place. [2022-11-16 12:52:42,663 INFO L137 encePairwiseOnDemand]: 374/378 looper letters, 61 selfloop transitions, 3 changer transitions 0/264 dead transitions. [2022-11-16 12:52:42,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 264 transitions, 682 flow [2022-11-16 12:52:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:52:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:52:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1089 transitions. [2022-11-16 12:52:42,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7202380952380952 [2022-11-16 12:52:42,668 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1089 transitions. [2022-11-16 12:52:42,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1089 transitions. [2022-11-16 12:52:42,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:52:42,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1089 transitions. [2022-11-16 12:52:42,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 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 12:52:42,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 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 12:52:42,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 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 12:52:42,681 INFO L175 Difference]: Start difference. First operand has 272 places, 265 transitions, 556 flow. Second operand 4 states and 1089 transitions. [2022-11-16 12:52:42,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 264 transitions, 682 flow [2022-11-16 12:52:42,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 264 transitions, 672 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:52:42,693 INFO L231 Difference]: Finished difference. Result has 266 places, 264 transitions, 550 flow [2022-11-16 12:52:42,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=266, PETRI_TRANSITIONS=264} [2022-11-16 12:52:42,695 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -30 predicate places. [2022-11-16 12:52:42,696 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 264 transitions, 550 flow [2022-11-16 12:52:42,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 12:52:42,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:42,697 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, 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 12:52:42,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:52:42,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-16 12:52:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash 678779835, now seen corresponding path program 1 times [2022-11-16 12:52:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:42,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292223389] [2022-11-16 12:52:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:42,921 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 12:52:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:42,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292223389] [2022-11-16 12:52:42,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292223389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:42,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:42,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:52:42,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996718517] [2022-11-16 12:52:42,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:42,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:52:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:52:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:52:42,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 378 [2022-11-16 12:52:42,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 264 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 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 12:52:42,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:42,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 378 [2022-11-16 12:52:42,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:54,445 INFO L130 PetriNetUnfolder]: 30247/41713 cut-off events. [2022-11-16 12:52:54,445 INFO L131 PetriNetUnfolder]: For 2412/2476 co-relation queries the response was YES. [2022-11-16 12:52:54,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84619 conditions, 41713 events. 30247/41713 cut-off events. For 2412/2476 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 289067 event pairs, 23430 based on Foata normal form. 0/14815 useless extension candidates. Maximal degree in co-relation 84549. Up to 20176 conditions per place. [2022-11-16 12:52:54,917 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 122 selfloop transitions, 4 changer transitions 0/325 dead transitions. [2022-11-16 12:52:54,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 325 transitions, 940 flow [2022-11-16 12:52:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:52:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:52:54,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1423 transitions. [2022-11-16 12:52:54,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7529100529100529 [2022-11-16 12:52:54,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1423 transitions. [2022-11-16 12:52:54,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1423 transitions. [2022-11-16 12:52:54,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:52:54,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1423 transitions. [2022-11-16 12:52:54,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.6) internal successors, (1423), 5 states have internal predecessors, (1423), 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 12:52:54,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 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 12:52:54,932 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 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 12:52:54,932 INFO L175 Difference]: Start difference. First operand has 266 places, 264 transitions, 550 flow. Second operand 5 states and 1423 transitions. [2022-11-16 12:52:54,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 325 transitions, 940 flow [2022-11-16 12:52:54,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 325 transitions, 934 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:52:54,939 INFO L231 Difference]: Finished difference. Result has 270 places, 267 transitions, 574 flow [2022-11-16 12:52:54,940 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-11-16 12:52:54,942 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -26 predicate places. [2022-11-16 12:52:54,943 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 574 flow [2022-11-16 12:52:54,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 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 12:52:54,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:54,944 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 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 12:52:54,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:52:54,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-16 12:52:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:54,946 INFO L85 PathProgramCache]: Analyzing trace with hash 4131572, now seen corresponding path program 1 times [2022-11-16 12:52:54,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:54,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413837474] [2022-11-16 12:52:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:54,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:55,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413837474] [2022-11-16 12:52:55,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413837474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:52:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900713890] [2022-11-16 12:52:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:55,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:52:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:55,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:52:55,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a923eef-555b-4ca8-bc7a-d5352b29f0ee/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:52:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:55,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:52:55,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:55,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:52:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:55,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900713890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:52:55,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:52:55,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:52:55,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556786330] [2022-11-16 12:52:55,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:52:55,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:52:55,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:55,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:52:55,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:52:55,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 378 [2022-11-16 12:52:55,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 574 flow. Second operand has 12 states, 12 states have (on average 261.6666666666667) internal successors, (3140), 12 states have internal predecessors, (3140), 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 12:52:55,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:55,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 378 [2022-11-16 12:52:55,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand