./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8 --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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- 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-2329fc7 [2022-12-13 12:59:57,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:59:57,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:59:57,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:59:57,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:59:57,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:59:57,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:59:57,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:59:57,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:59:57,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:59:57,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:59:57,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:59:57,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:59:57,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:59:57,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:59:57,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:59:57,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:59:57,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:59:57,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:59:57,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:59:57,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:59:57,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:59:57,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:59:57,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:59:57,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:59:57,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:59:57,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:59:57,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:59:57,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:59:57,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:59:57,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:59:57,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:59:57,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:59:57,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:59:57,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:59:57,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:59:57,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:59:57,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:59:57,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:59:57,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:59:57,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:59:57,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:59:57,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:59:57,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:59:57,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:59:57,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:59:57,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:59:57,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:59:57,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:59:57,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:59:57,954 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:59:57,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:59:57,954 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:59:57,954 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:59:57,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:59:57,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:59:57,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:59:57,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:59:57,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:59:57,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:59:57,955 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:59:57,956 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:59:57,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:59:57,956 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:59:57,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:59:57,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:59:57,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:59:57,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:59:57,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:59:57,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:59:57,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:59:57,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:59:57,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:59:57,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:59:57,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:59:57,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:59:57,958 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:59:57,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:59:57,959 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:59:57,959 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2022-12-13 12:59:58,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:59:58,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:59:58,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:59:58,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:59:58,147 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:59:58,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/stack-2.i [2022-12-13 13:00:00,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:00:00,939 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:00:00,940 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/sv-benchmarks/c/pthread/stack-2.i [2022-12-13 13:00:00,950 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/data/7b08e75d9/fb0f16931a674e10ad242cbe819227b3/FLAG1b991ca1e [2022-12-13 13:00:00,961 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/data/7b08e75d9/fb0f16931a674e10ad242cbe819227b3 [2022-12-13 13:00:00,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:00:00,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:00:00,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:00:00,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:00:00,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:00:00,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:00:00" (1/1) ... [2022-12-13 13:00:00,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2e5c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:00, skipping insertion in model container [2022-12-13 13:00:00,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:00:00" (1/1) ... [2022-12-13 13:00:00,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:00:01,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:00:01,310 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-12-13 13:00:01,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:00:01,344 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:00:01,382 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-12-13 13:00:01,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:00:01,459 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:00:01,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01 WrapperNode [2022-12-13 13:00:01,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:00:01,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:00:01,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:00:01,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:00:01,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,516 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 167 [2022-12-13 13:00:01,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:00:01,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:00:01,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:00:01,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:00:01,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:00:01,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:00:01,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:00:01,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:00:01,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (1/1) ... [2022-12-13 13:00:01,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:00:01,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:01,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:00:01,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:00:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 13:00:01,608 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 13:00:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 13:00:01,608 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 13:00:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:00:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:00:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:00:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:00:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:00:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:00:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:00:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:00:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:00:01,610 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:00:01,714 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:00:01,716 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:00:01,974 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:00:01,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:00:01,984 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 13:00:01,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:00:01 BoogieIcfgContainer [2022-12-13 13:00:01,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:00:01,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:00:01,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:00:01,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:00:01,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:00:00" (1/3) ... [2022-12-13 13:00:01,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6405ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:00:01, skipping insertion in model container [2022-12-13 13:00:01,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:00:01" (2/3) ... [2022-12-13 13:00:01,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6405ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:00:01, skipping insertion in model container [2022-12-13 13:00:01,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:00:01" (3/3) ... [2022-12-13 13:00:01,996 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2022-12-13 13:00:02,005 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:00:02,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:00:02,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 13:00:02,016 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:00:02,106 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 13:00:02,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 197 transitions, 410 flow [2022-12-13 13:00:02,227 INFO L130 PetriNetUnfolder]: 10/195 cut-off events. [2022-12-13 13:00:02,227 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:00:02,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 195 events. 10/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 503 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-12-13 13:00:02,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 197 transitions, 410 flow [2022-12-13 13:00:02,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 185 transitions, 379 flow [2022-12-13 13:00:02,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:00:02,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 185 transitions, 379 flow [2022-12-13 13:00:02,257 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 185 transitions, 379 flow [2022-12-13 13:00:02,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 185 transitions, 379 flow [2022-12-13 13:00:02,295 INFO L130 PetriNetUnfolder]: 10/185 cut-off events. [2022-12-13 13:00:02,295 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:00:02,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 185 events. 10/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 409 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-12-13 13:00:02,300 INFO L119 LiptonReduction]: Number of co-enabled transitions 11596 [2022-12-13 13:00:05,672 INFO L134 LiptonReduction]: Checked pairs total: 14281 [2022-12-13 13:00:05,673 INFO L136 LiptonReduction]: Total number of compositions: 177 [2022-12-13 13:00:05,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:00:05,687 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;@42da8fd5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:00:05,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 13:00:05,690 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2022-12-13 13:00:05,690 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:00:05,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:05,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:05,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:05,695 INFO L85 PathProgramCache]: Analyzing trace with hash 461964245, now seen corresponding path program 1 times [2022-12-13 13:00:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:05,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065392179] [2022-12-13 13:00:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065392179] [2022-12-13 13:00:05,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065392179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:05,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:05,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:00:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309858407] [2022-12-13 13:00:05,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:05,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:00:05,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:05,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:00:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:00:05,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 374 [2022-12-13 13:00:05,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2022-12-13 13:00:05,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:05,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 374 [2022-12-13 13:00:05,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:06,205 INFO L130 PetriNetUnfolder]: 1288/2111 cut-off events. [2022-12-13 13:00:06,205 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-12-13 13:00:06,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4283 conditions, 2111 events. 1288/2111 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9923 event pairs, 394 based on Foata normal form. 56/1502 useless extension candidates. Maximal degree in co-relation 3996. Up to 1357 conditions per place. [2022-12-13 13:00:06,224 INFO L137 encePairwiseOnDemand]: 364/374 looper letters, 67 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2022-12-13 13:00:06,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 309 flow [2022-12-13 13:00:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:06,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2022-12-13 13:00:06,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561497326203209 [2022-12-13 13:00:06,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2022-12-13 13:00:06,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2022-12-13 13:00:06,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:06,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2022-12-13 13:00:06,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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) [2022-12-13 13:00:06,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:06,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:06,255 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 91 flow. Second operand 3 states and 624 transitions. [2022-12-13 13:00:06,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 309 flow [2022-12-13 13:00:06,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 301 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 13:00:06,261 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 134 flow [2022-12-13 13:00:06,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2022-12-13 13:00:06,267 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2022-12-13 13:00:06,267 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 134 flow [2022-12-13 13:00:06,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2022-12-13 13:00:06,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:06,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:06,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:00:06,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1434199042, now seen corresponding path program 1 times [2022-12-13 13:00:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:06,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483107170] [2022-12-13 13:00:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:06,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:06,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:06,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483107170] [2022-12-13 13:00:06,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483107170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:06,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:06,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:00:06,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188636781] [2022-12-13 13:00:06,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:06,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:00:06,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:06,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:00:06,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:00:06,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 374 [2022-12-13 13:00:06,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2022-12-13 13:00:06,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:06,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 374 [2022-12-13 13:00:06,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:06,673 INFO L130 PetriNetUnfolder]: 1387/2292 cut-off events. [2022-12-13 13:00:06,673 INFO L131 PetriNetUnfolder]: For 456/456 co-relation queries the response was YES. [2022-12-13 13:00:06,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 2292 events. 1387/2292 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11097 event pairs, 769 based on Foata normal form. 92/1967 useless extension candidates. Maximal degree in co-relation 4568. Up to 1856 conditions per place. [2022-12-13 13:00:06,690 INFO L137 encePairwiseOnDemand]: 364/374 looper letters, 75 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2022-12-13 13:00:06,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 91 transitions, 435 flow [2022-12-13 13:00:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:00:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:00:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 975 transitions. [2022-12-13 13:00:06,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5213903743315508 [2022-12-13 13:00:06,697 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 975 transitions. [2022-12-13 13:00:06,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 975 transitions. [2022-12-13 13:00:06,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:06,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 975 transitions. [2022-12-13 13:00:06,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 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) [2022-12-13 13:00:06,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 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) [2022-12-13 13:00:06,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 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) [2022-12-13 13:00:06,710 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 134 flow. Second operand 5 states and 975 transitions. [2022-12-13 13:00:06,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 91 transitions, 435 flow [2022-12-13 13:00:06,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 91 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:00:06,713 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 230 flow [2022-12-13 13:00:06,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2022-12-13 13:00:06,714 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2022-12-13 13:00:06,714 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 230 flow [2022-12-13 13:00:06,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2022-12-13 13:00:06,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:06,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:00:06,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1254949336, now seen corresponding path program 1 times [2022-12-13 13:00:06,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:06,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367579442] [2022-12-13 13:00:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:06,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:06,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:06,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367579442] [2022-12-13 13:00:06,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367579442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:06,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:06,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:00:06,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598079387] [2022-12-13 13:00:06,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:06,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:00:06,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:00:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:00:06,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 374 [2022-12-13 13:00:06,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2022-12-13 13:00:06,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:06,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 374 [2022-12-13 13:00:06,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:07,170 INFO L130 PetriNetUnfolder]: 2180/3667 cut-off events. [2022-12-13 13:00:07,170 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2022-12-13 13:00:07,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9285 conditions, 3667 events. 2180/3667 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 20005 event pairs, 1007 based on Foata normal form. 0/3091 useless extension candidates. Maximal degree in co-relation 8588. Up to 2203 conditions per place. [2022-12-13 13:00:07,190 INFO L137 encePairwiseOnDemand]: 369/374 looper letters, 98 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2022-12-13 13:00:07,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 101 transitions, 633 flow [2022-12-13 13:00:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2022-12-13 13:00:07,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.551693404634581 [2022-12-13 13:00:07,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2022-12-13 13:00:07,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2022-12-13 13:00:07,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:07,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2022-12-13 13:00:07,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 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) [2022-12-13 13:00:07,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:07,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:07,198 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 230 flow. Second operand 3 states and 619 transitions. [2022-12-13 13:00:07,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 101 transitions, 633 flow [2022-12-13 13:00:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 101 transitions, 633 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:00:07,205 INFO L231 Difference]: Finished difference. Result has 53 places, 56 transitions, 246 flow [2022-12-13 13:00:07,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=53, PETRI_TRANSITIONS=56} [2022-12-13 13:00:07,206 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2022-12-13 13:00:07,206 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 56 transitions, 246 flow [2022-12-13 13:00:07,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2022-12-13 13:00:07,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:07,207 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:07,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:00:07,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1254851138, now seen corresponding path program 1 times [2022-12-13 13:00:07,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:07,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556468749] [2022-12-13 13:00:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:07,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:07,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556468749] [2022-12-13 13:00:07,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556468749] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:07,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:07,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:00:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177190229] [2022-12-13 13:00:07,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:07,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:00:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:07,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:00:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:00:07,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 374 [2022-12-13 13:00:07,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 56 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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) [2022-12-13 13:00:07,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:07,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 374 [2022-12-13 13:00:07,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:07,772 INFO L130 PetriNetUnfolder]: 3367/5610 cut-off events. [2022-12-13 13:00:07,772 INFO L131 PetriNetUnfolder]: For 2952/2952 co-relation queries the response was YES. [2022-12-13 13:00:07,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14953 conditions, 5610 events. 3367/5610 cut-off events. For 2952/2952 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 32360 event pairs, 1336 based on Foata normal form. 36/4816 useless extension candidates. Maximal degree in co-relation 14104. Up to 3003 conditions per place. [2022-12-13 13:00:07,794 INFO L137 encePairwiseOnDemand]: 366/374 looper letters, 82 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2022-12-13 13:00:07,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 98 transitions, 601 flow [2022-12-13 13:00:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2022-12-13 13:00:07,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.553475935828877 [2022-12-13 13:00:07,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2022-12-13 13:00:07,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2022-12-13 13:00:07,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:07,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2022-12-13 13:00:07,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 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) [2022-12-13 13:00:07,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:07,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:07,802 INFO L175 Difference]: Start difference. First operand has 53 places, 56 transitions, 246 flow. Second operand 3 states and 621 transitions. [2022-12-13 13:00:07,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 98 transitions, 601 flow [2022-12-13 13:00:07,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 98 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:00:07,809 INFO L231 Difference]: Finished difference. Result has 56 places, 67 transitions, 396 flow [2022-12-13 13:00:07,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=56, PETRI_TRANSITIONS=67} [2022-12-13 13:00:07,810 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2022-12-13 13:00:07,810 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 67 transitions, 396 flow [2022-12-13 13:00:07,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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) [2022-12-13 13:00:07,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:07,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:00:07,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash -111032313, now seen corresponding path program 1 times [2022-12-13 13:00:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:07,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500741679] [2022-12-13 13:00:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:07,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:07,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500741679] [2022-12-13 13:00:07,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500741679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:07,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:07,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:00:07,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521827400] [2022-12-13 13:00:07,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:07,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:00:07,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:07,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:00:07,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:00:07,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 374 [2022-12-13 13:00:07,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2022-12-13 13:00:07,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:07,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 374 [2022-12-13 13:00:07,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:08,462 INFO L130 PetriNetUnfolder]: 4341/7182 cut-off events. [2022-12-13 13:00:08,462 INFO L131 PetriNetUnfolder]: For 8005/8005 co-relation queries the response was YES. [2022-12-13 13:00:08,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21010 conditions, 7182 events. 4341/7182 cut-off events. For 8005/8005 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 43207 event pairs, 2073 based on Foata normal form. 0/6314 useless extension candidates. Maximal degree in co-relation 12862. Up to 4935 conditions per place. [2022-12-13 13:00:08,507 INFO L137 encePairwiseOnDemand]: 369/374 looper letters, 120 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2022-12-13 13:00:08,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 123 transitions, 982 flow [2022-12-13 13:00:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2022-12-13 13:00:08,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.551693404634581 [2022-12-13 13:00:08,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2022-12-13 13:00:08,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2022-12-13 13:00:08,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:08,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2022-12-13 13:00:08,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 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) [2022-12-13 13:00:08,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:08,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:08,520 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 396 flow. Second operand 3 states and 619 transitions. [2022-12-13 13:00:08,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 123 transitions, 982 flow [2022-12-13 13:00:08,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 123 transitions, 928 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:00:08,537 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 382 flow [2022-12-13 13:00:08,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2022-12-13 13:00:08,538 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2022-12-13 13:00:08,538 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 382 flow [2022-12-13 13:00:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2022-12-13 13:00:08,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:08,539 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:08,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:00:08,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:08,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash -845338512, now seen corresponding path program 1 times [2022-12-13 13:00:08,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:08,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200082066] [2022-12-13 13:00:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:08,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:00:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:08,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200082066] [2022-12-13 13:00:08,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200082066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:08,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:08,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:00:08,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61147970] [2022-12-13 13:00:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:08,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:00:08,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:08,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:00:08,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:00:08,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 374 [2022-12-13 13:00:08,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2022-12-13 13:00:08,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:08,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 374 [2022-12-13 13:00:08,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:09,088 INFO L130 PetriNetUnfolder]: 4004/6761 cut-off events. [2022-12-13 13:00:09,089 INFO L131 PetriNetUnfolder]: For 6359/6359 co-relation queries the response was YES. [2022-12-13 13:00:09,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19692 conditions, 6761 events. 4004/6761 cut-off events. For 6359/6359 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 40985 event pairs, 523 based on Foata normal form. 0/6137 useless extension candidates. Maximal degree in co-relation 18298. Up to 5705 conditions per place. [2022-12-13 13:00:09,108 INFO L137 encePairwiseOnDemand]: 370/374 looper letters, 87 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2022-12-13 13:00:09,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 687 flow [2022-12-13 13:00:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2022-12-13 13:00:09,110 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5347593582887701 [2022-12-13 13:00:09,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2022-12-13 13:00:09,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2022-12-13 13:00:09,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:09,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2022-12-13 13:00:09,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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) [2022-12-13 13:00:09,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:09,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:09,113 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 382 flow. Second operand 3 states and 600 transitions. [2022-12-13 13:00:09,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 687 flow [2022-12-13 13:00:09,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:00:09,117 INFO L231 Difference]: Finished difference. Result has 58 places, 68 transitions, 392 flow [2022-12-13 13:00:09,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=58, PETRI_TRANSITIONS=68} [2022-12-13 13:00:09,118 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2022-12-13 13:00:09,118 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 68 transitions, 392 flow [2022-12-13 13:00:09,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2022-12-13 13:00:09,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:09,118 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:09,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:00:09,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:09,119 INFO L85 PathProgramCache]: Analyzing trace with hash -845338542, now seen corresponding path program 1 times [2022-12-13 13:00:09,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:09,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262776351] [2022-12-13 13:00:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:09,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:09,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:09,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262776351] [2022-12-13 13:00:09,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262776351] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:09,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673337357] [2022-12-13 13:00:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:09,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:09,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:09,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:09,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:00:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:09,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:00:09,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:09,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:00:09,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673337357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:09,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:00:09,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 13:00:09,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569410431] [2022-12-13 13:00:09,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:00:09,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:09,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:00:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:00:09,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 374 [2022-12-13 13:00:09,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 68 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 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) [2022-12-13 13:00:09,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:09,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 374 [2022-12-13 13:00:09,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:09,877 INFO L130 PetriNetUnfolder]: 3856/6505 cut-off events. [2022-12-13 13:00:09,877 INFO L131 PetriNetUnfolder]: For 7285/7285 co-relation queries the response was YES. [2022-12-13 13:00:09,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19460 conditions, 6505 events. 3856/6505 cut-off events. For 7285/7285 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 38985 event pairs, 237 based on Foata normal form. 108/6111 useless extension candidates. Maximal degree in co-relation 18076. Up to 3647 conditions per place. [2022-12-13 13:00:09,904 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 138 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2022-12-13 13:00:09,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 141 transitions, 1082 flow [2022-12-13 13:00:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:00:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:00:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 814 transitions. [2022-12-13 13:00:09,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2022-12-13 13:00:09,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 814 transitions. [2022-12-13 13:00:09,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 814 transitions. [2022-12-13 13:00:09,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:09,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 814 transitions. [2022-12-13 13:00:09,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 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) [2022-12-13 13:00:09,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2022-12-13 13:00:09,918 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2022-12-13 13:00:09,918 INFO L175 Difference]: Start difference. First operand has 58 places, 68 transitions, 392 flow. Second operand 4 states and 814 transitions. [2022-12-13 13:00:09,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 141 transitions, 1082 flow [2022-12-13 13:00:09,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 141 transitions, 1078 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:00:09,930 INFO L231 Difference]: Finished difference. Result has 59 places, 67 transitions, 388 flow [2022-12-13 13:00:09,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=59, PETRI_TRANSITIONS=67} [2022-12-13 13:00:09,931 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2022-12-13 13:00:09,931 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 67 transitions, 388 flow [2022-12-13 13:00:09,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 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) [2022-12-13 13:00:09,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:09,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:09,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:00:10,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 13:00:10,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:10,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:10,134 INFO L85 PathProgramCache]: Analyzing trace with hash -471231115, now seen corresponding path program 1 times [2022-12-13 13:00:10,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:10,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819985324] [2022-12-13 13:00:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:10,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:10,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:10,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819985324] [2022-12-13 13:00:10,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819985324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:10,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:10,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:00:10,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132927373] [2022-12-13 13:00:10,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:10,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:00:10,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:00:10,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:00:10,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 374 [2022-12-13 13:00:10,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 67 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 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) [2022-12-13 13:00:10,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:10,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 374 [2022-12-13 13:00:10,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:10,470 INFO L130 PetriNetUnfolder]: 1183/2156 cut-off events. [2022-12-13 13:00:10,470 INFO L131 PetriNetUnfolder]: For 2415/2415 co-relation queries the response was YES. [2022-12-13 13:00:10,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6589 conditions, 2156 events. 1183/2156 cut-off events. For 2415/2415 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11620 event pairs, 201 based on Foata normal form. 218/2242 useless extension candidates. Maximal degree in co-relation 2444. Up to 1698 conditions per place. [2022-12-13 13:00:10,475 INFO L137 encePairwiseOnDemand]: 367/374 looper letters, 50 selfloop transitions, 9 changer transitions 1/60 dead transitions. [2022-12-13 13:00:10,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 417 flow [2022-12-13 13:00:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2022-12-13 13:00:10,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5249554367201426 [2022-12-13 13:00:10,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2022-12-13 13:00:10,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2022-12-13 13:00:10,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:10,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2022-12-13 13:00:10,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2022-12-13 13:00:10,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:10,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:10,481 INFO L175 Difference]: Start difference. First operand has 59 places, 67 transitions, 388 flow. Second operand 3 states and 589 transitions. [2022-12-13 13:00:10,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 417 flow [2022-12-13 13:00:10,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 365 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-12-13 13:00:10,488 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 213 flow [2022-12-13 13:00:10,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2022-12-13 13:00:10,489 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2022-12-13 13:00:10,489 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 213 flow [2022-12-13 13:00:10,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 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) [2022-12-13 13:00:10,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:10,489 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:10,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:00:10,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1731850798, now seen corresponding path program 1 times [2022-12-13 13:00:10,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:10,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276765263] [2022-12-13 13:00:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:10,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:00:10,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:10,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276765263] [2022-12-13 13:00:10,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276765263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:10,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:10,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:00:10,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995817376] [2022-12-13 13:00:10,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:10,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:00:10,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:00:10,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:00:10,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 374 [2022-12-13 13:00:10,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-12-13 13:00:10,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:10,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 374 [2022-12-13 13:00:10,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:10,708 INFO L130 PetriNetUnfolder]: 1063/1936 cut-off events. [2022-12-13 13:00:10,708 INFO L131 PetriNetUnfolder]: For 1435/1439 co-relation queries the response was YES. [2022-12-13 13:00:10,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5583 conditions, 1936 events. 1063/1936 cut-off events. For 1435/1439 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10186 event pairs, 301 based on Foata normal form. 4/1848 useless extension candidates. Maximal degree in co-relation 2718. Up to 1194 conditions per place. [2022-12-13 13:00:10,713 INFO L137 encePairwiseOnDemand]: 370/374 looper letters, 65 selfloop transitions, 4 changer transitions 2/72 dead transitions. [2022-12-13 13:00:10,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 460 flow [2022-12-13 13:00:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:00:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:00:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-12-13 13:00:10,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5329768270944741 [2022-12-13 13:00:10,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-12-13 13:00:10,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-12-13 13:00:10,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:10,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-12-13 13:00:10,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2022-12-13 13:00:10,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:10,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2022-12-13 13:00:10,719 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 213 flow. Second operand 3 states and 598 transitions. [2022-12-13 13:00:10,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 460 flow [2022-12-13 13:00:10,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:00:10,721 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 216 flow [2022-12-13 13:00:10,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2022-12-13 13:00:10,721 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2022-12-13 13:00:10,722 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 216 flow [2022-12-13 13:00:10,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-12-13 13:00:10,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:10,722 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:10,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:00:10,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:10,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1731850797, now seen corresponding path program 1 times [2022-12-13 13:00:10,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:10,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745776290] [2022-12-13 13:00:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:10,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:10,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745776290] [2022-12-13 13:00:10,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745776290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:10,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842785985] [2022-12-13 13:00:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:10,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:10,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:10,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:10,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:00:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:10,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:00:10,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:10,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:00:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:10,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842785985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:00:10,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:00:10,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-12-13 13:00:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331549539] [2022-12-13 13:00:10,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:00:10,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:00:10,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:00:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:00:10,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 374 [2022-12-13 13:00:10,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 177.33333333333334) internal successors, (1596), 9 states have internal predecessors, (1596), 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) [2022-12-13 13:00:10,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:10,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 374 [2022-12-13 13:00:10,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:11,361 INFO L130 PetriNetUnfolder]: 1621/2916 cut-off events. [2022-12-13 13:00:11,361 INFO L131 PetriNetUnfolder]: For 2331/2331 co-relation queries the response was YES. [2022-12-13 13:00:11,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8526 conditions, 2916 events. 1621/2916 cut-off events. For 2331/2331 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14663 event pairs, 371 based on Foata normal form. 56/2880 useless extension candidates. Maximal degree in co-relation 7330. Up to 1555 conditions per place. [2022-12-13 13:00:11,369 INFO L137 encePairwiseOnDemand]: 364/374 looper letters, 128 selfloop transitions, 16 changer transitions 1/146 dead transitions. [2022-12-13 13:00:11,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 146 transitions, 894 flow [2022-12-13 13:00:11,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:00:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:00:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1524 transitions. [2022-12-13 13:00:11,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5093582887700535 [2022-12-13 13:00:11,371 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1524 transitions. [2022-12-13 13:00:11,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1524 transitions. [2022-12-13 13:00:11,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:11,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1524 transitions. [2022-12-13 13:00:11,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.5) internal successors, (1524), 8 states have internal predecessors, (1524), 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) [2022-12-13 13:00:11,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2022-12-13 13:00:11,376 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2022-12-13 13:00:11,376 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 216 flow. Second operand 8 states and 1524 transitions. [2022-12-13 13:00:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 146 transitions, 894 flow [2022-12-13 13:00:11,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 146 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:00:11,391 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 334 flow [2022-12-13 13:00:11,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2022-12-13 13:00:11,392 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2022-12-13 13:00:11,392 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 334 flow [2022-12-13 13:00:11,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 177.33333333333334) internal successors, (1596), 9 states have internal predecessors, (1596), 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) [2022-12-13 13:00:11,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:11,392 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:11,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:00:11,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:11,594 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:11,595 INFO L85 PathProgramCache]: Analyzing trace with hash -41482505, now seen corresponding path program 1 times [2022-12-13 13:00:11,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:11,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914422813] [2022-12-13 13:00:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:11,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:11,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:11,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914422813] [2022-12-13 13:00:11,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914422813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:11,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:11,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:00:11,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745549378] [2022-12-13 13:00:11,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:11,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:00:11,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:11,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:00:11,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:00:11,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 374 [2022-12-13 13:00:11,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 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) [2022-12-13 13:00:11,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:11,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 374 [2022-12-13 13:00:11,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:12,032 INFO L130 PetriNetUnfolder]: 1369/2496 cut-off events. [2022-12-13 13:00:12,032 INFO L131 PetriNetUnfolder]: For 2721/2721 co-relation queries the response was YES. [2022-12-13 13:00:12,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7644 conditions, 2496 events. 1369/2496 cut-off events. For 2721/2721 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 12269 event pairs, 317 based on Foata normal form. 36/2464 useless extension candidates. Maximal degree in co-relation 6828. Up to 1165 conditions per place. [2022-12-13 13:00:12,040 INFO L137 encePairwiseOnDemand]: 364/374 looper letters, 85 selfloop transitions, 12 changer transitions 4/102 dead transitions. [2022-12-13 13:00:12,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 688 flow [2022-12-13 13:00:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:00:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:00:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 974 transitions. [2022-12-13 13:00:12,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.520855614973262 [2022-12-13 13:00:12,042 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 974 transitions. [2022-12-13 13:00:12,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 974 transitions. [2022-12-13 13:00:12,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:12,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 974 transitions. [2022-12-13 13:00:12,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.8) internal successors, (974), 5 states have internal predecessors, (974), 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) [2022-12-13 13:00:12,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 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) [2022-12-13 13:00:12,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 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) [2022-12-13 13:00:12,048 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 334 flow. Second operand 5 states and 974 transitions. [2022-12-13 13:00:12,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 688 flow [2022-12-13 13:00:12,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 656 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-12-13 13:00:12,054 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 304 flow [2022-12-13 13:00:12,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2022-12-13 13:00:12,055 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2022-12-13 13:00:12,055 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 304 flow [2022-12-13 13:00:12,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 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) [2022-12-13 13:00:12,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:12,056 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 13:00:12,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:00:12,056 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash 197380703, now seen corresponding path program 1 times [2022-12-13 13:00:12,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:12,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599067506] [2022-12-13 13:00:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:12,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:12,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599067506] [2022-12-13 13:00:12,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599067506] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972959793] [2022-12-13 13:00:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:12,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:12,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:12,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:12,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:00:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:12,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:00:12,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:12,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:00:12,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972959793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:12,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:00:12,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 13:00:12,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229685415] [2022-12-13 13:00:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:12,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:00:12,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:12,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:00:12,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:00:12,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 374 [2022-12-13 13:00:12,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 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) [2022-12-13 13:00:12,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:12,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 374 [2022-12-13 13:00:12,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:12,571 INFO L130 PetriNetUnfolder]: 1239/2236 cut-off events. [2022-12-13 13:00:12,571 INFO L131 PetriNetUnfolder]: For 2513/2525 co-relation queries the response was YES. [2022-12-13 13:00:12,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6850 conditions, 2236 events. 1239/2236 cut-off events. For 2513/2525 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10556 event pairs, 305 based on Foata normal form. 54/2234 useless extension candidates. Maximal degree in co-relation 6236. Up to 1894 conditions per place. [2022-12-13 13:00:12,581 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 72 selfloop transitions, 2 changer transitions 4/79 dead transitions. [2022-12-13 13:00:12,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 551 flow [2022-12-13 13:00:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:00:12,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:00:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 789 transitions. [2022-12-13 13:00:12,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5274064171122995 [2022-12-13 13:00:12,583 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 789 transitions. [2022-12-13 13:00:12,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 789 transitions. [2022-12-13 13:00:12,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:12,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 789 transitions. [2022-12-13 13:00:12,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 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) [2022-12-13 13:00:12,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2022-12-13 13:00:12,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 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) [2022-12-13 13:00:12,589 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 304 flow. Second operand 4 states and 789 transitions. [2022-12-13 13:00:12,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 551 flow [2022-12-13 13:00:12,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 545 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:00:12,596 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 276 flow [2022-12-13 13:00:12,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2022-12-13 13:00:12,596 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2022-12-13 13:00:12,596 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 276 flow [2022-12-13 13:00:12,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 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) [2022-12-13 13:00:12,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:12,597 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:12,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:00:12,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:12,798 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:12,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:12,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1162104555, now seen corresponding path program 2 times [2022-12-13 13:00:12,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:12,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559245533] [2022-12-13 13:00:12,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:12,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:13,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:13,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559245533] [2022-12-13 13:00:13,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559245533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:13,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:13,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:00:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769485859] [2022-12-13 13:00:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:13,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:00:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:00:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:00:13,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 374 [2022-12-13 13:00:13,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 276 flow. Second operand has 9 states, 9 states have (on average 176.88888888888889) internal successors, (1592), 9 states have internal predecessors, (1592), 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) [2022-12-13 13:00:13,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:13,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 374 [2022-12-13 13:00:13,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:13,533 INFO L130 PetriNetUnfolder]: 1357/2450 cut-off events. [2022-12-13 13:00:13,534 INFO L131 PetriNetUnfolder]: For 2630/2630 co-relation queries the response was YES. [2022-12-13 13:00:13,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7520 conditions, 2450 events. 1357/2450 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11570 event pairs, 259 based on Foata normal form. 24/2412 useless extension candidates. Maximal degree in co-relation 3462. Up to 1052 conditions per place. [2022-12-13 13:00:13,541 INFO L137 encePairwiseOnDemand]: 365/374 looper letters, 128 selfloop transitions, 21 changer transitions 1/151 dead transitions. [2022-12-13 13:00:13,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 151 transitions, 998 flow [2022-12-13 13:00:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:00:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 13:00:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2045 transitions. [2022-12-13 13:00:13,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49708313077297034 [2022-12-13 13:00:13,544 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2045 transitions. [2022-12-13 13:00:13,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2045 transitions. [2022-12-13 13:00:13,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:13,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2045 transitions. [2022-12-13 13:00:13,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 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) [2022-12-13 13:00:13,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 374.0) internal successors, (4488), 12 states have internal predecessors, (4488), 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) [2022-12-13 13:00:13,551 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 374.0) internal successors, (4488), 12 states have internal predecessors, (4488), 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) [2022-12-13 13:00:13,551 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 276 flow. Second operand 11 states and 2045 transitions. [2022-12-13 13:00:13,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 151 transitions, 998 flow [2022-12-13 13:00:13,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 151 transitions, 995 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:00:13,558 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 413 flow [2022-12-13 13:00:13,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=413, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2022-12-13 13:00:13,559 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2022-12-13 13:00:13,559 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 413 flow [2022-12-13 13:00:13,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 176.88888888888889) internal successors, (1592), 9 states have internal predecessors, (1592), 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) [2022-12-13 13:00:13,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:13,560 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:13,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:00:13,561 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:13,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:13,561 INFO L85 PathProgramCache]: Analyzing trace with hash 321176801, now seen corresponding path program 1 times [2022-12-13 13:00:13,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:13,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470590673] [2022-12-13 13:00:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:13,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:13,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470590673] [2022-12-13 13:00:13,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470590673] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421475017] [2022-12-13 13:00:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:13,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:13,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:13,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:13,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:00:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:13,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:00:13,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:13,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:00:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:13,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421475017] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:00:13,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:00:13,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-12-13 13:00:13,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075312526] [2022-12-13 13:00:13,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:00:13,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 13:00:13,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:13,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 13:00:13,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:00:13,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 374 [2022-12-13 13:00:13,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 413 flow. Second operand has 11 states, 11 states have (on average 174.0909090909091) internal successors, (1915), 11 states have internal predecessors, (1915), 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) [2022-12-13 13:00:13,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:13,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 374 [2022-12-13 13:00:13,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:14,334 INFO L130 PetriNetUnfolder]: 1473/2642 cut-off events. [2022-12-13 13:00:14,334 INFO L131 PetriNetUnfolder]: For 4362/4362 co-relation queries the response was YES. [2022-12-13 13:00:14,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8763 conditions, 2642 events. 1473/2642 cut-off events. For 4362/4362 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12672 event pairs, 253 based on Foata normal form. 6/2580 useless extension candidates. Maximal degree in co-relation 7918. Up to 1426 conditions per place. [2022-12-13 13:00:14,344 INFO L137 encePairwiseOnDemand]: 363/374 looper letters, 79 selfloop transitions, 33 changer transitions 0/113 dead transitions. [2022-12-13 13:00:14,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 113 transitions, 885 flow [2022-12-13 13:00:14,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:00:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:00:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1603 transitions. [2022-12-13 13:00:14,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.476232917409388 [2022-12-13 13:00:14,346 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1603 transitions. [2022-12-13 13:00:14,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1603 transitions. [2022-12-13 13:00:14,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:14,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1603 transitions. [2022-12-13 13:00:14,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.11111111111111) internal successors, (1603), 9 states have internal predecessors, (1603), 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) [2022-12-13 13:00:14,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 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) [2022-12-13 13:00:14,352 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 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) [2022-12-13 13:00:14,352 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 413 flow. Second operand 9 states and 1603 transitions. [2022-12-13 13:00:14,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 113 transitions, 885 flow [2022-12-13 13:00:14,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 826 flow, removed 23 selfloop flow, removed 6 redundant places. [2022-12-13 13:00:14,360 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 484 flow [2022-12-13 13:00:14,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=484, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2022-12-13 13:00:14,360 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2022-12-13 13:00:14,360 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 484 flow [2022-12-13 13:00:14,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 174.0909090909091) internal successors, (1915), 11 states have internal predecessors, (1915), 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) [2022-12-13 13:00:14,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:14,361 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:14,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:00:14,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 13:00:14,562 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash -7025668, now seen corresponding path program 1 times [2022-12-13 13:00:14,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:14,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632989571] [2022-12-13 13:00:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:14,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 13:00:14,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:14,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632989571] [2022-12-13 13:00:14,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632989571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:14,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:00:14,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:00:14,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825747624] [2022-12-13 13:00:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:14,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:00:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:00:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:00:14,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 374 [2022-12-13 13:00:14,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 172.28571428571428) internal successors, (1206), 7 states have internal predecessors, (1206), 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) [2022-12-13 13:00:14,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:14,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 374 [2022-12-13 13:00:14,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:15,128 INFO L130 PetriNetUnfolder]: 1765/3174 cut-off events. [2022-12-13 13:00:15,128 INFO L131 PetriNetUnfolder]: For 5234/5234 co-relation queries the response was YES. [2022-12-13 13:00:15,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10570 conditions, 3174 events. 1765/3174 cut-off events. For 5234/5234 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 15824 event pairs, 423 based on Foata normal form. 44/3138 useless extension candidates. Maximal degree in co-relation 9730. Up to 1931 conditions per place. [2022-12-13 13:00:15,139 INFO L137 encePairwiseOnDemand]: 365/374 looper letters, 112 selfloop transitions, 14 changer transitions 10/137 dead transitions. [2022-12-13 13:00:15,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 137 transitions, 1078 flow [2022-12-13 13:00:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:00:15,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:00:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1457 transitions. [2022-12-13 13:00:15,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4869652406417112 [2022-12-13 13:00:15,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1457 transitions. [2022-12-13 13:00:15,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1457 transitions. [2022-12-13 13:00:15,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:15,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1457 transitions. [2022-12-13 13:00:15,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 182.125) internal successors, (1457), 8 states have internal predecessors, (1457), 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) [2022-12-13 13:00:15,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2022-12-13 13:00:15,145 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2022-12-13 13:00:15,145 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 484 flow. Second operand 8 states and 1457 transitions. [2022-12-13 13:00:15,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 137 transitions, 1078 flow [2022-12-13 13:00:15,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 1044 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-12-13 13:00:15,154 INFO L231 Difference]: Finished difference. Result has 87 places, 72 transitions, 591 flow [2022-12-13 13:00:15,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=591, PETRI_PLACES=87, PETRI_TRANSITIONS=72} [2022-12-13 13:00:15,155 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2022-12-13 13:00:15,155 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 72 transitions, 591 flow [2022-12-13 13:00:15,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 172.28571428571428) internal successors, (1206), 7 states have internal predecessors, (1206), 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) [2022-12-13 13:00:15,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:15,155 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2022-12-13 13:00:15,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:00:15,157 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1464943097, now seen corresponding path program 1 times [2022-12-13 13:00:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:15,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41372028] [2022-12-13 13:00:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:15,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:15,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:15,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41372028] [2022-12-13 13:00:15,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41372028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:15,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139717777] [2022-12-13 13:00:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:15,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:15,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:15,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:15,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:00:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:15,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 13:00:15,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:15,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:00:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:15,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139717777] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:00:15,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:00:15,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 18 [2022-12-13 13:00:15,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190247704] [2022-12-13 13:00:15,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:00:15,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 13:00:15,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 13:00:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:00:15,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 374 [2022-12-13 13:00:15,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 72 transitions, 591 flow. Second operand has 20 states, 20 states have (on average 177.6) internal successors, (3552), 20 states have internal predecessors, (3552), 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) [2022-12-13 13:00:15,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:15,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 374 [2022-12-13 13:00:15,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:16,520 INFO L130 PetriNetUnfolder]: 2720/4921 cut-off events. [2022-12-13 13:00:16,520 INFO L131 PetriNetUnfolder]: For 9476/9476 co-relation queries the response was YES. [2022-12-13 13:00:16,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16527 conditions, 4921 events. 2720/4921 cut-off events. For 9476/9476 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 23708 event pairs, 603 based on Foata normal form. 144/4937 useless extension candidates. Maximal degree in co-relation 15148. Up to 1613 conditions per place. [2022-12-13 13:00:16,537 INFO L137 encePairwiseOnDemand]: 366/374 looper letters, 292 selfloop transitions, 33 changer transitions 3/329 dead transitions. [2022-12-13 13:00:16,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 329 transitions, 2425 flow [2022-12-13 13:00:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 13:00:16,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 13:00:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3943 transitions. [2022-12-13 13:00:16,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5020371785077667 [2022-12-13 13:00:16,542 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3943 transitions. [2022-12-13 13:00:16,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3943 transitions. [2022-12-13 13:00:16,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:16,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3943 transitions. [2022-12-13 13:00:16,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 187.76190476190476) internal successors, (3943), 21 states have internal predecessors, (3943), 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) [2022-12-13 13:00:16,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 374.0) internal successors, (8228), 22 states have internal predecessors, (8228), 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) [2022-12-13 13:00:16,568 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 374.0) internal successors, (8228), 22 states have internal predecessors, (8228), 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) [2022-12-13 13:00:16,568 INFO L175 Difference]: Start difference. First operand has 87 places, 72 transitions, 591 flow. Second operand 21 states and 3943 transitions. [2022-12-13 13:00:16,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 329 transitions, 2425 flow [2022-12-13 13:00:16,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 329 transitions, 2409 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-12-13 13:00:16,584 INFO L231 Difference]: Finished difference. Result has 113 places, 89 transitions, 871 flow [2022-12-13 13:00:16,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=871, PETRI_PLACES=113, PETRI_TRANSITIONS=89} [2022-12-13 13:00:16,584 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2022-12-13 13:00:16,584 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 89 transitions, 871 flow [2022-12-13 13:00:16,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 177.6) internal successors, (3552), 20 states have internal predecessors, (3552), 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) [2022-12-13 13:00:16,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:16,585 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:16,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:00:16,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:00:16,787 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1260729208, now seen corresponding path program 1 times [2022-12-13 13:00:16,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:16,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187357674] [2022-12-13 13:00:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:16,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187357674] [2022-12-13 13:00:17,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187357674] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148781798] [2022-12-13 13:00:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:17,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:17,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:17,027 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:17,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:00:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:17,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 13:00:17,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:17,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:00:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:17,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148781798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:00:17,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:00:17,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-12-13 13:00:17,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181074990] [2022-12-13 13:00:17,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:00:17,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 13:00:17,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 13:00:17,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:00:17,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 374 [2022-12-13 13:00:17,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 89 transitions, 871 flow. Second operand has 16 states, 16 states have (on average 171.625) internal successors, (2746), 16 states have internal predecessors, (2746), 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) [2022-12-13 13:00:17,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:17,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 374 [2022-12-13 13:00:17,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:18,141 INFO L130 PetriNetUnfolder]: 2991/5420 cut-off events. [2022-12-13 13:00:18,141 INFO L131 PetriNetUnfolder]: For 12120/12120 co-relation queries the response was YES. [2022-12-13 13:00:18,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18821 conditions, 5420 events. 2991/5420 cut-off events. For 12120/12120 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 27282 event pairs, 595 based on Foata normal form. 62/5342 useless extension candidates. Maximal degree in co-relation 17336. Up to 2772 conditions per place. [2022-12-13 13:00:18,157 INFO L137 encePairwiseOnDemand]: 365/374 looper letters, 135 selfloop transitions, 56 changer transitions 16/208 dead transitions. [2022-12-13 13:00:18,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 208 transitions, 1769 flow [2022-12-13 13:00:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:00:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 13:00:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2655 transitions. [2022-12-13 13:00:18,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4732620320855615 [2022-12-13 13:00:18,161 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2655 transitions. [2022-12-13 13:00:18,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2655 transitions. [2022-12-13 13:00:18,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:18,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2655 transitions. [2022-12-13 13:00:18,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 177.0) internal successors, (2655), 15 states have internal predecessors, (2655), 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) [2022-12-13 13:00:18,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 374.0) internal successors, (5984), 16 states have internal predecessors, (5984), 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) [2022-12-13 13:00:18,169 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 374.0) internal successors, (5984), 16 states have internal predecessors, (5984), 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) [2022-12-13 13:00:18,170 INFO L175 Difference]: Start difference. First operand has 113 places, 89 transitions, 871 flow. Second operand 15 states and 2655 transitions. [2022-12-13 13:00:18,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 208 transitions, 1769 flow [2022-12-13 13:00:18,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 208 transitions, 1689 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-12-13 13:00:18,186 INFO L231 Difference]: Finished difference. Result has 120 places, 95 transitions, 971 flow [2022-12-13 13:00:18,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=971, PETRI_PLACES=120, PETRI_TRANSITIONS=95} [2022-12-13 13:00:18,186 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 77 predicate places. [2022-12-13 13:00:18,187 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 95 transitions, 971 flow [2022-12-13 13:00:18,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 171.625) internal successors, (2746), 16 states have internal predecessors, (2746), 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) [2022-12-13 13:00:18,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:18,187 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:18,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:00:18,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 13:00:18,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash -82180276, now seen corresponding path program 2 times [2022-12-13 13:00:18,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:18,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763191222] [2022-12-13 13:00:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:18,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 13:00:18,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:18,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763191222] [2022-12-13 13:00:18,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763191222] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:18,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494309099] [2022-12-13 13:00:18,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:00:18,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:18,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:18,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:18,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:00:18,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:00:18,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:00:18,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 13:00:18,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 13:00:18,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:00:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 13:00:18,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494309099] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:00:18,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:00:18,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 15 [2022-12-13 13:00:18,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101034570] [2022-12-13 13:00:18,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:00:18,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 13:00:18,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:18,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 13:00:18,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:00:19,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 374 [2022-12-13 13:00:19,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 95 transitions, 971 flow. Second operand has 17 states, 17 states have (on average 173.47058823529412) internal successors, (2949), 17 states have internal predecessors, (2949), 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) [2022-12-13 13:00:19,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:19,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 374 [2022-12-13 13:00:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:20,035 INFO L130 PetriNetUnfolder]: 3495/6236 cut-off events. [2022-12-13 13:00:20,035 INFO L131 PetriNetUnfolder]: For 13732/13732 co-relation queries the response was YES. [2022-12-13 13:00:20,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22584 conditions, 6236 events. 3495/6236 cut-off events. For 13732/13732 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 31750 event pairs, 487 based on Foata normal form. 40/6148 useless extension candidates. Maximal degree in co-relation 20824. Up to 1585 conditions per place. [2022-12-13 13:00:20,058 INFO L137 encePairwiseOnDemand]: 366/374 looper letters, 235 selfloop transitions, 70 changer transitions 5/311 dead transitions. [2022-12-13 13:00:20,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 311 transitions, 2736 flow [2022-12-13 13:00:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 13:00:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 13:00:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3774 transitions. [2022-12-13 13:00:20,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2022-12-13 13:00:20,062 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3774 transitions. [2022-12-13 13:00:20,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3774 transitions. [2022-12-13 13:00:20,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:20,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3774 transitions. [2022-12-13 13:00:20,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 179.71428571428572) internal successors, (3774), 21 states have internal predecessors, (3774), 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) [2022-12-13 13:00:20,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 374.0) internal successors, (8228), 22 states have internal predecessors, (8228), 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) [2022-12-13 13:00:20,070 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 374.0) internal successors, (8228), 22 states have internal predecessors, (8228), 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) [2022-12-13 13:00:20,070 INFO L175 Difference]: Start difference. First operand has 120 places, 95 transitions, 971 flow. Second operand 21 states and 3774 transitions. [2022-12-13 13:00:20,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 311 transitions, 2736 flow [2022-12-13 13:00:20,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 311 transitions, 2615 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-12-13 13:00:20,094 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 1444 flow [2022-12-13 13:00:20,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1444, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2022-12-13 13:00:20,094 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 97 predicate places. [2022-12-13 13:00:20,095 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 1444 flow [2022-12-13 13:00:20,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 173.47058823529412) internal successors, (2949), 17 states have internal predecessors, (2949), 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) [2022-12-13 13:00:20,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:20,095 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:20,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:00:20,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 13:00:20,296 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:20,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1710448884, now seen corresponding path program 3 times [2022-12-13 13:00:20,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:20,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330231482] [2022-12-13 13:00:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 13:00:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:20,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330231482] [2022-12-13 13:00:20,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330231482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:20,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060095305] [2022-12-13 13:00:20,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:00:20,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:20,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:20,637 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:20,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:00:20,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 13:00:20,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:00:20,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:00:20,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 13:00:20,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:00:20,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060095305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:20,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:00:20,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 18 [2022-12-13 13:00:20,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463669018] [2022-12-13 13:00:20,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:20,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:00:20,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:00:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-12-13 13:00:20,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 374 [2022-12-13 13:00:20,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 124 transitions, 1444 flow. Second operand has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2022-12-13 13:00:20,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:20,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 374 [2022-12-13 13:00:20,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:21,567 INFO L130 PetriNetUnfolder]: 3491/6240 cut-off events. [2022-12-13 13:00:21,567 INFO L131 PetriNetUnfolder]: For 15900/15900 co-relation queries the response was YES. [2022-12-13 13:00:21,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23403 conditions, 6240 events. 3491/6240 cut-off events. For 15900/15900 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 31822 event pairs, 731 based on Foata normal form. 8/6120 useless extension candidates. Maximal degree in co-relation 21564. Up to 4268 conditions per place. [2022-12-13 13:00:21,617 INFO L137 encePairwiseOnDemand]: 368/374 looper letters, 97 selfloop transitions, 48 changer transitions 2/148 dead transitions. [2022-12-13 13:00:21,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 148 transitions, 1837 flow [2022-12-13 13:00:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:00:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:00:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1118 transitions. [2022-12-13 13:00:21,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4982174688057041 [2022-12-13 13:00:21,618 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1118 transitions. [2022-12-13 13:00:21,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1118 transitions. [2022-12-13 13:00:21,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:21,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1118 transitions. [2022-12-13 13:00:21,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.33333333333334) internal successors, (1118), 6 states have internal predecessors, (1118), 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) [2022-12-13 13:00:21,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 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) [2022-12-13 13:00:21,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 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) [2022-12-13 13:00:21,621 INFO L175 Difference]: Start difference. First operand has 140 places, 124 transitions, 1444 flow. Second operand 6 states and 1118 transitions. [2022-12-13 13:00:21,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 148 transitions, 1837 flow [2022-12-13 13:00:21,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 148 transitions, 1747 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-12-13 13:00:21,650 INFO L231 Difference]: Finished difference. Result has 136 places, 125 transitions, 1452 flow [2022-12-13 13:00:21,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1452, PETRI_PLACES=136, PETRI_TRANSITIONS=125} [2022-12-13 13:00:21,651 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2022-12-13 13:00:21,651 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 125 transitions, 1452 flow [2022-12-13 13:00:21,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2022-12-13 13:00:21,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:00:21,651 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:21,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:00:21,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:21,854 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 13:00:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:00:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash -262563172, now seen corresponding path program 4 times [2022-12-13 13:00:21,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:00:21,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907113457] [2022-12-13 13:00:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:00:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:00:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:00:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 72 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:22,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:00:22,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907113457] [2022-12-13 13:00:22,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907113457] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:00:22,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748289220] [2022-12-13 13:00:22,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:00:22,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:22,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:00:22,005 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:00:22,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:00:22,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:00:22,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:00:22,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:00:22,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:00:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:00:22,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:00:22,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748289220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:00:22,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:00:22,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2022-12-13 13:00:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582980613] [2022-12-13 13:00:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:00:22,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:00:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:00:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:00:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:00:22,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 374 [2022-12-13 13:00:22,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 1452 flow. Second operand has 8 states, 8 states have (on average 188.375) internal successors, (1507), 8 states have internal predecessors, (1507), 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) [2022-12-13 13:00:22,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:00:22,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 374 [2022-12-13 13:00:22,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:00:23,195 INFO L130 PetriNetUnfolder]: 3651/6458 cut-off events. [2022-12-13 13:00:23,195 INFO L131 PetriNetUnfolder]: For 12227/12239 co-relation queries the response was YES. [2022-12-13 13:00:23,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22853 conditions, 6458 events. 3651/6458 cut-off events. For 12227/12239 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 32061 event pairs, 355 based on Foata normal form. 116/6434 useless extension candidates. Maximal degree in co-relation 22814. Up to 2028 conditions per place. [2022-12-13 13:00:23,216 INFO L137 encePairwiseOnDemand]: 370/374 looper letters, 0 selfloop transitions, 0 changer transitions 289/289 dead transitions. [2022-12-13 13:00:23,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 289 transitions, 3019 flow [2022-12-13 13:00:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:00:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:00:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1592 transitions. [2022-12-13 13:00:23,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5320855614973262 [2022-12-13 13:00:23,218 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1592 transitions. [2022-12-13 13:00:23,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1592 transitions. [2022-12-13 13:00:23,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:00:23,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1592 transitions. [2022-12-13 13:00:23,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 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) [2022-12-13 13:00:23,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2022-12-13 13:00:23,223 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 374.0) internal successors, (3366), 9 states have internal predecessors, (3366), 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) [2022-12-13 13:00:23,223 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 1452 flow. Second operand 8 states and 1592 transitions. [2022-12-13 13:00:23,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 289 transitions, 3019 flow [2022-12-13 13:00:23,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 289 transitions, 2865 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-12-13 13:00:23,253 INFO L231 Difference]: Finished difference. Result has 128 places, 0 transitions, 0 flow [2022-12-13 13:00:23,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=128, PETRI_TRANSITIONS=0} [2022-12-13 13:00:23,254 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2022-12-13 13:00:23,254 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 0 transitions, 0 flow [2022-12-13 13:00:23,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.375) internal successors, (1507), 8 states have internal predecessors, (1507), 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) [2022-12-13 13:00:23,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-13 13:00:23,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-12-13 13:00:23,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 13:00:23,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 13:00:23,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 13:00:23,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 13:00:23,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 13:00:23,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 13:00:23,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 13:00:23,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 13:00:23,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 13:00:23,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:00:23,460 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:00:23,474 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:00:23,474 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:00:23,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:00:23 BasicIcfg [2022-12-13 13:00:23,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:00:23,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:00:23,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:00:23,483 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:00:23,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:00:01" (3/4) ... [2022-12-13 13:00:23,489 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:00:23,497 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-12-13 13:00:23,498 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-12-13 13:00:23,501 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-13 13:00:23,501 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 13:00:23,501 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 13:00:23,501 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:00:23,522 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:00:23,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:00:23,523 INFO L158 Benchmark]: Toolchain (without parser) took 22558.76ms. Allocated memory was 132.1MB in the beginning and 901.8MB in the end (delta: 769.7MB). Free memory was 100.0MB in the beginning and 495.1MB in the end (delta: -395.1MB). Peak memory consumption was 377.6MB. Max. memory is 16.1GB. [2022-12-13 13:00:23,523 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 132.1MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:00:23,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.28ms. Allocated memory is still 132.1MB. Free memory was 100.0MB in the beginning and 70.8MB in the end (delta: 29.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 13:00:23,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.60ms. Allocated memory is still 132.1MB. Free memory was 70.6MB in the beginning and 68.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:00:23,523 INFO L158 Benchmark]: Boogie Preprocessor took 34.86ms. Allocated memory is still 132.1MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:00:23,524 INFO L158 Benchmark]: RCFGBuilder took 433.85ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 65.9MB in the beginning and 125.1MB in the end (delta: -59.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:00:23,524 INFO L158 Benchmark]: TraceAbstraction took 21492.23ms. Allocated memory was 159.4MB in the beginning and 901.8MB in the end (delta: 742.4MB). Free memory was 124.4MB in the beginning and 497.5MB in the end (delta: -373.1MB). Peak memory consumption was 593.6MB. Max. memory is 16.1GB. [2022-12-13 13:00:23,524 INFO L158 Benchmark]: Witness Printer took 39.53ms. Allocated memory is still 901.8MB. Free memory was 497.5MB in the beginning and 495.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:00:23,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 132.1MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 495.28ms. Allocated memory is still 132.1MB. Free memory was 100.0MB in the beginning and 70.8MB in the end (delta: 29.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.60ms. Allocated memory is still 132.1MB. Free memory was 70.6MB in the beginning and 68.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.86ms. Allocated memory is still 132.1MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 433.85ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 65.9MB in the beginning and 125.1MB in the end (delta: -59.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 21492.23ms. Allocated memory was 159.4MB in the beginning and 901.8MB in the end (delta: 742.4MB). Free memory was 124.4MB in the beginning and 497.5MB in the end (delta: -373.1MB). Peak memory consumption was 593.6MB. Max. memory is 16.1GB. * Witness Printer took 39.53ms. Allocated memory is still 901.8MB. Free memory was 497.5MB in the beginning and 495.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 182 PlacesBefore, 43 PlacesAfterwards, 185 TransitionsBefore, 41 TransitionsAfterwards, 11596 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 120 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 5 ChoiceCompositions, 177 TotalNumberOfCompositions, 14281 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11380, independent: 11165, independent conditional: 0, independent unconditional: 11165, dependent: 215, dependent conditional: 0, dependent unconditional: 215, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6692, independent: 6641, independent conditional: 0, independent unconditional: 6641, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11380, independent: 4524, independent conditional: 0, independent unconditional: 4524, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 6692, unknown conditional: 0, unknown unconditional: 6692] , Statistics on independence cache: Total cache size (in pairs): 269, Positive cache size: 247, Positive conditional cache size: 0, Positive unconditional cache size: 247, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 320 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.3s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2870 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2534 mSDsluCounter, 1163 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1074 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6059 IncrementalHoareTripleChecker+Invalid, 6260 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 89 mSDtfsCounter, 6059 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 581 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1452occurred in iteration=19, InterpolantAutomatonStates: 146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 747 NumberOfCodeBlocks, 723 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 865 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2681 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 34 InterpolantComputations, 15 PerfectInterpolantSequences, 325/685 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 13:00:23,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8fff108-b7bd-4ef7-9d3b-7c4a657d5a2f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE