./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.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_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/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_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/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_a18f439b-b040-437a-a4eb-5b34b61a8c36/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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- 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 20:35:12,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:35:12,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:35:12,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:35:12,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:35:12,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:35:12,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:35:12,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:35:12,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:35:12,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:35:12,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:35:12,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:35:12,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:35:12,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:35:12,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:35:12,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:35:12,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:35:12,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:35:12,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:35:12,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:35:12,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:35:12,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:35:12,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:35:12,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:35:12,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:35:12,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:35:12,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:35:12,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:35:12,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:35:12,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:35:12,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:35:12,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:35:12,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:35:12,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:35:12,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:35:12,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:35:12,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:35:12,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:35:12,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:35:12,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:35:12,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:35:12,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:35:12,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:35:12,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:35:12,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:35:12,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:35:12,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:35:12,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:35:12,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:35:12,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:35:12,613 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:35:12,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:35:12,613 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:35:12,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:35:12,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:35:12,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:35:12,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:35:12,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:35:12,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:35:12,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:35:12,614 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:35:12,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:35:12,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:35:12,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:35:12,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:35:12,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:35:12,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:35:12,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:35:12,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:35:12,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:35:12,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:35:12,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:35:12,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:35:12,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:35:12,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:35:12,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:35:12,617 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:35:12,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:35:12,617 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:35:12,617 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_a18f439b-b040-437a-a4eb-5b34b61a8c36/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2022-12-13 20:35:12,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:35:12,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:35:12,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:35:12,828 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:35:12,828 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:35:12,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-12-13 20:35:15,373 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:35:15,551 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:35:15,552 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2022-12-13 20:35:15,563 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/data/4e3d5a946/2378d0565c4e43f3a988ab04b507693f/FLAG82207a344 [2022-12-13 20:35:15,573 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/data/4e3d5a946/2378d0565c4e43f3a988ab04b507693f [2022-12-13 20:35:15,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:35:15,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:35:15,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:35:15,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:35:15,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:35:15,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1ea172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15, skipping insertion in model container [2022-12-13 20:35:15,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:35:15,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:35:15,801 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_a18f439b-b040-437a-a4eb-5b34b61a8c36/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-12-13 20:35:15,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:35:15,824 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:35:15,847 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_a18f439b-b040-437a-a4eb-5b34b61a8c36/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2022-12-13 20:35:15,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:35:15,875 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:35:15,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15 WrapperNode [2022-12-13 20:35:15,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:35:15,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:35:15,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:35:15,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:35:15,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,905 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2022-12-13 20:35:15,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:35:15,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:35:15,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:35:15,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:35:15,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,923 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:35:15,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:35:15,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:35:15,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:35:15,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (1/1) ... [2022-12-13 20:35:15,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:35:15,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:35:15,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:35:15,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 20:35:15,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 20:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:35:15,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:35:15,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:35:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:35:15,987 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 20:35:16,080 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:35:16,081 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:35:16,280 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:35:16,286 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:35:16,286 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 20:35:16,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:35:16 BoogieIcfgContainer [2022-12-13 20:35:16,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:35:16,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:35:16,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:35:16,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:35:16,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:35:15" (1/3) ... [2022-12-13 20:35:16,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@811e8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:35:16, skipping insertion in model container [2022-12-13 20:35:16,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:35:15" (2/3) ... [2022-12-13 20:35:16,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@811e8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:35:16, skipping insertion in model container [2022-12-13 20:35:16,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:35:16" (3/3) ... [2022-12-13 20:35:16,294 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2022-12-13 20:35:16,301 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:35:16,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:35:16,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 20:35:16,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:35:16,372 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:35:16,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 153 transitions, 314 flow [2022-12-13 20:35:16,450 INFO L130 PetriNetUnfolder]: 30/218 cut-off events. [2022-12-13 20:35:16,450 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:35:16,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 218 events. 30/218 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 690 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2022-12-13 20:35:16,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 153 transitions, 314 flow [2022-12-13 20:35:16,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 150 transitions, 308 flow [2022-12-13 20:35:16,462 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:35:16,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 150 transitions, 308 flow [2022-12-13 20:35:16,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 150 transitions, 308 flow [2022-12-13 20:35:16,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 150 transitions, 308 flow [2022-12-13 20:35:16,503 INFO L130 PetriNetUnfolder]: 29/215 cut-off events. [2022-12-13 20:35:16,503 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:35:16,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 215 events. 29/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 688 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2022-12-13 20:35:16,506 INFO L119 LiptonReduction]: Number of co-enabled transitions 5850 [2022-12-13 20:35:18,422 INFO L134 LiptonReduction]: Checked pairs total: 16903 [2022-12-13 20:35:18,423 INFO L136 LiptonReduction]: Total number of compositions: 119 [2022-12-13 20:35:18,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:35:18,441 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;@5d811d0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:35:18,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 20:35:18,445 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-12-13 20:35:18,445 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:35:18,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:18,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:35:18,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:35:18,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash 17556615, now seen corresponding path program 1 times [2022-12-13 20:35:18,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:18,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778511499] [2022-12-13 20:35:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:18,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:18,668 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 20:35:18,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:18,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778511499] [2022-12-13 20:35:18,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778511499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:18,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:18,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:35:18,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039898611] [2022-12-13 20:35:18,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:18,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:35:18,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:18,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:35:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:35:18,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 272 [2022-12-13 20:35:18,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 64 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 20:35:18,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:18,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 272 [2022-12-13 20:35:18,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:18,853 INFO L130 PetriNetUnfolder]: 324/706 cut-off events. [2022-12-13 20:35:18,853 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:35:18,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 706 events. 324/706 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3341 event pairs, 216 based on Foata normal form. 71/586 useless extension candidates. Maximal degree in co-relation 1357. Up to 650 conditions per place. [2022-12-13 20:35:18,859 INFO L137 encePairwiseOnDemand]: 252/272 looper letters, 57 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2022-12-13 20:35:18,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 256 flow [2022-12-13 20:35:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:35:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:35:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-12-13 20:35:18,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5759803921568627 [2022-12-13 20:35:18,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-12-13 20:35:18,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-12-13 20:35:18,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:18,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-12-13 20:35:18,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 20:35:18,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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 20:35:18,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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 20:35:18,886 INFO L175 Difference]: Start difference. First operand has 52 places, 64 transitions, 136 flow. Second operand 3 states and 470 transitions. [2022-12-13 20:35:18,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 256 flow [2022-12-13 20:35:18,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:35:18,891 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 110 flow [2022-12-13 20:35:18,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2022-12-13 20:35:18,896 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2022-12-13 20:35:18,897 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 110 flow [2022-12-13 20:35:18,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 20:35:18,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:18,897 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 20:35:18,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:35:18,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:35:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash -307923433, now seen corresponding path program 1 times [2022-12-13 20:35:18,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:18,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058793239] [2022-12-13 20:35:18,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:35:18,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:35:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:35:18,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:35:18,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:35:18,964 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 20:35:18,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 20:35:18,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 20:35:18,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 20:35:18,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 20:35:18,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 20:35:18,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 20:35:18,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 20:35:18,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-13 20:35:18,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-13 20:35:18,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-13 20:35:18,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 20:35:18,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 20:35:18,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 20:35:18,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 20:35:18,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 20:35:18,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 20:35:18,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:35:18,970 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 20:35:18,972 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:35:18,972 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:35:18,994 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:35:18,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 194 transitions, 406 flow [2022-12-13 20:35:19,033 INFO L130 PetriNetUnfolder]: 51/361 cut-off events. [2022-12-13 20:35:19,033 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:35:19,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 361 events. 51/361 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1334 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 220. Up to 9 conditions per place. [2022-12-13 20:35:19,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 194 transitions, 406 flow [2022-12-13 20:35:19,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 194 transitions, 406 flow [2022-12-13 20:35:19,039 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:35:19,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 194 transitions, 406 flow [2022-12-13 20:35:19,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 194 transitions, 406 flow [2022-12-13 20:35:19,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 194 transitions, 406 flow [2022-12-13 20:35:19,066 INFO L130 PetriNetUnfolder]: 51/361 cut-off events. [2022-12-13 20:35:19,066 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:35:19,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 361 events. 51/361 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1334 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 220. Up to 9 conditions per place. [2022-12-13 20:35:19,073 INFO L119 LiptonReduction]: Number of co-enabled transitions 16224 [2022-12-13 20:35:21,131 INFO L134 LiptonReduction]: Checked pairs total: 48762 [2022-12-13 20:35:21,131 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-12-13 20:35:21,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:35:21,134 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;@5d811d0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:35:21,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 20:35:21,137 INFO L130 PetriNetUnfolder]: 4/20 cut-off events. [2022-12-13 20:35:21,137 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:35:21,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:21,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:35:21,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:35:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash 903400503, now seen corresponding path program 1 times [2022-12-13 20:35:21,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:21,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423305347] [2022-12-13 20:35:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:21,177 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 20:35:21,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:21,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423305347] [2022-12-13 20:35:21,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423305347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:21,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:21,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:35:21,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142309320] [2022-12-13 20:35:21,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:21,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:35:21,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:35:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:35:21,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 338 [2022-12-13 20:35:21,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 20:35:21,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:21,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 338 [2022-12-13 20:35:21,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:22,377 INFO L130 PetriNetUnfolder]: 10374/16437 cut-off events. [2022-12-13 20:35:22,377 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-13 20:35:22,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32419 conditions, 16437 events. 10374/16437 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 123313 event pairs, 4672 based on Foata normal form. 2237/13506 useless extension candidates. Maximal degree in co-relation 4733. Up to 15864 conditions per place. [2022-12-13 20:35:22,450 INFO L137 encePairwiseOnDemand]: 312/338 looper letters, 73 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-13 20:35:22,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 89 transitions, 346 flow [2022-12-13 20:35:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:35:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:35:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-12-13 20:35:22,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5828402366863905 [2022-12-13 20:35:22,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-12-13 20:35:22,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-12-13 20:35:22,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:22,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-12-13 20:35:22,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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 20:35:22,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 20:35:22,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 20:35:22,461 INFO L175 Difference]: Start difference. First operand has 75 places, 95 transitions, 208 flow. Second operand 3 states and 591 transitions. [2022-12-13 20:35:22,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 89 transitions, 346 flow [2022-12-13 20:35:22,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:35:22,465 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 182 flow [2022-12-13 20:35:22,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2022-12-13 20:35:22,466 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2022-12-13 20:35:22,467 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 182 flow [2022-12-13 20:35:22,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 20:35:22,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:22,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:35:22,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:35:22,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:35:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash -951779082, now seen corresponding path program 1 times [2022-12-13 20:35:22,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:22,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946697196] [2022-12-13 20:35:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:22,503 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 20:35:22,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:22,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946697196] [2022-12-13 20:35:22,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946697196] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:22,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:22,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:35:22,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002467863] [2022-12-13 20:35:22,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:22,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:35:22,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:22,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:35:22,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:35:22,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 338 [2022-12-13 20:35:22,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 20:35:22,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:22,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 338 [2022-12-13 20:35:22,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:23,473 INFO L130 PetriNetUnfolder]: 8865/15158 cut-off events. [2022-12-13 20:35:23,473 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2022-12-13 20:35:23,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29885 conditions, 15158 events. 8865/15158 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 112940 event pairs, 4933 based on Foata normal form. 0/11684 useless extension candidates. Maximal degree in co-relation 29847. Up to 10250 conditions per place. [2022-12-13 20:35:23,516 INFO L137 encePairwiseOnDemand]: 314/338 looper letters, 89 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2022-12-13 20:35:23,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 458 flow [2022-12-13 20:35:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:35:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:35:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2022-12-13 20:35:23,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5690335305719921 [2022-12-13 20:35:23,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2022-12-13 20:35:23,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2022-12-13 20:35:23,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:23,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2022-12-13 20:35:23,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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 20:35:23,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 20:35:23,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 20:35:23,521 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 182 flow. Second operand 3 states and 577 transitions. [2022-12-13 20:35:23,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 458 flow [2022-12-13 20:35:23,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:35:23,525 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 272 flow [2022-12-13 20:35:23,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2022-12-13 20:35:23,526 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2022-12-13 20:35:23,526 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 272 flow [2022-12-13 20:35:23,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 20:35:23,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:23,526 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:35:23,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:35:23,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:35:23,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash 82150001, now seen corresponding path program 1 times [2022-12-13 20:35:23,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:23,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541797184] [2022-12-13 20:35:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:23,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:23,570 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 20:35:23,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:23,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541797184] [2022-12-13 20:35:23,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541797184] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:35:23,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752492992] [2022-12-13 20:35:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:23,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:23,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:35:23,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:35:23,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:35:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:23,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:35:23,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:35:23,665 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 20:35:23,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:35:23,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752492992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:23,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:35:23,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 20:35:23,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100165874] [2022-12-13 20:35:23,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:23,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:35:23,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:23,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:35:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:35:23,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 338 [2022-12-13 20:35:23,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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 20:35:23,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:23,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 338 [2022-12-13 20:35:23,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:24,633 INFO L130 PetriNetUnfolder]: 8501/14634 cut-off events. [2022-12-13 20:35:24,633 INFO L131 PetriNetUnfolder]: For 3107/3158 co-relation queries the response was YES. [2022-12-13 20:35:24,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34632 conditions, 14634 events. 8501/14634 cut-off events. For 3107/3158 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 109218 event pairs, 6628 based on Foata normal form. 0/12550 useless extension candidates. Maximal degree in co-relation 29130. Up to 13786 conditions per place. [2022-12-13 20:35:24,688 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 66 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-12-13 20:35:24,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 83 transitions, 410 flow [2022-12-13 20:35:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:35:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:35:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 710 transitions. [2022-12-13 20:35:24,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5251479289940828 [2022-12-13 20:35:24,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 710 transitions. [2022-12-13 20:35:24,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 710 transitions. [2022-12-13 20:35:24,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:24,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 710 transitions. [2022-12-13 20:35:24,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 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 20:35:24,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 20:35:24,695 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 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 20:35:24,695 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 272 flow. Second operand 4 states and 710 transitions. [2022-12-13 20:35:24,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 83 transitions, 410 flow [2022-12-13 20:35:24,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:35:24,764 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 252 flow [2022-12-13 20:35:24,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2022-12-13 20:35:24,764 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2022-12-13 20:35:24,764 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 252 flow [2022-12-13 20:35:24,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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 20:35:24,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:24,765 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:35:24,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:35:24,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:24,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:35:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:24,968 INFO L85 PathProgramCache]: Analyzing trace with hash 82149999, now seen corresponding path program 1 times [2022-12-13 20:35:24,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:24,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470352972] [2022-12-13 20:35:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:24,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:25,034 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 20:35:25,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:25,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470352972] [2022-12-13 20:35:25,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470352972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:25,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:25,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:35:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938782263] [2022-12-13 20:35:25,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:25,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:35:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:25,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:35:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:35:25,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 338 [2022-12-13 20:35:25,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 20:35:25,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:25,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 338 [2022-12-13 20:35:25,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:25,869 INFO L130 PetriNetUnfolder]: 8502/14648 cut-off events. [2022-12-13 20:35:25,869 INFO L131 PetriNetUnfolder]: For 1626/1677 co-relation queries the response was YES. [2022-12-13 20:35:25,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33615 conditions, 14648 events. 8502/14648 cut-off events. For 1626/1677 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 109341 event pairs, 6063 based on Foata normal form. 0/12294 useless extension candidates. Maximal degree in co-relation 32527. Up to 13723 conditions per place. [2022-12-13 20:35:25,910 INFO L137 encePairwiseOnDemand]: 334/338 looper letters, 66 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2022-12-13 20:35:25,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 402 flow [2022-12-13 20:35:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:35:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:35:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-12-13 20:35:25,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2022-12-13 20:35:25,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-12-13 20:35:25,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-12-13 20:35:25,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:25,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-12-13 20:35:25,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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 20:35:25,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 20:35:25,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 20:35:25,915 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 252 flow. Second operand 3 states and 546 transitions. [2022-12-13 20:35:25,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 402 flow [2022-12-13 20:35:25,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:35:25,920 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 261 flow [2022-12-13 20:35:25,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2022-12-13 20:35:25,921 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2022-12-13 20:35:25,921 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 261 flow [2022-12-13 20:35:25,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 20:35:25,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:25,921 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 20:35:25,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:35:25,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:35:25,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1636796887, now seen corresponding path program 1 times [2022-12-13 20:35:25,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:25,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150391463] [2022-12-13 20:35:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:25,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:35:25,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:35:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:35:25,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:35:25,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:35:25,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 20:35:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 20:35:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 20:35:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 20:35:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 20:35:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 20:35:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 20:35:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 20:35:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 20:35:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 20:35:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 20:35:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 20:35:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 20:35:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 20:35:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 20:35:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 20:35:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 20:35:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 20:35:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 20:35:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 20:35:25,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 20:35:25,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:35:25,955 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 20:35:25,956 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:35:25,956 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 20:35:25,975 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:35:25,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 235 transitions, 500 flow [2022-12-13 20:35:26,065 INFO L130 PetriNetUnfolder]: 77/545 cut-off events. [2022-12-13 20:35:26,065 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:35:26,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 545 events. 77/545 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2194 event pairs, 1 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 369. Up to 16 conditions per place. [2022-12-13 20:35:26,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 235 transitions, 500 flow [2022-12-13 20:35:26,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 235 transitions, 500 flow [2022-12-13 20:35:26,071 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:35:26,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 235 transitions, 500 flow [2022-12-13 20:35:26,072 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 235 transitions, 500 flow [2022-12-13 20:35:26,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 235 transitions, 500 flow [2022-12-13 20:35:26,110 INFO L130 PetriNetUnfolder]: 77/545 cut-off events. [2022-12-13 20:35:26,110 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:35:26,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 545 events. 77/545 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2194 event pairs, 1 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 369. Up to 16 conditions per place. [2022-12-13 20:35:26,124 INFO L119 LiptonReduction]: Number of co-enabled transitions 29250 [2022-12-13 20:35:28,371 INFO L134 LiptonReduction]: Checked pairs total: 96788 [2022-12-13 20:35:28,371 INFO L136 LiptonReduction]: Total number of compositions: 175 [2022-12-13 20:35:28,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:35:28,374 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;@5d811d0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:35:28,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 20:35:28,376 INFO L130 PetriNetUnfolder]: 4/20 cut-off events. [2022-12-13 20:35:28,377 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:35:28,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:28,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:35:28,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 20:35:28,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1333482301, now seen corresponding path program 1 times [2022-12-13 20:35:28,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:28,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539982703] [2022-12-13 20:35:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:28,397 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 20:35:28,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:28,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539982703] [2022-12-13 20:35:28,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539982703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:28,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:28,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:35:28,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467735697] [2022-12-13 20:35:28,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:28,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:35:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:35:28,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:35:28,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 410 [2022-12-13 20:35:28,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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 20:35:28,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:28,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 410 [2022-12-13 20:35:28,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:47,016 INFO L130 PetriNetUnfolder]: 247430/343819 cut-off events. [2022-12-13 20:35:47,016 INFO L131 PetriNetUnfolder]: For 2359/2359 co-relation queries the response was YES. [2022-12-13 20:35:47,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679785 conditions, 343819 events. 247430/343819 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 10534. Compared 2829613 event pairs, 217521 based on Foata normal form. 49299/283012 useless extension candidates. Maximal degree in co-relation 272216. Up to 334117 conditions per place. [2022-12-13 20:35:48,386 INFO L137 encePairwiseOnDemand]: 378/410 looper letters, 90 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2022-12-13 20:35:48,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 110 transitions, 434 flow [2022-12-13 20:35:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:35:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:35:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2022-12-13 20:35:48,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5796747967479675 [2022-12-13 20:35:48,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2022-12-13 20:35:48,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2022-12-13 20:35:48,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:48,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2022-12-13 20:35:48,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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 20:35:48,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 20:35:48,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 20:35:48,395 INFO L175 Difference]: Start difference. First operand has 96 places, 122 transitions, 274 flow. Second operand 3 states and 713 transitions. [2022-12-13 20:35:48,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 110 transitions, 434 flow [2022-12-13 20:35:48,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 110 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:35:48,400 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 236 flow [2022-12-13 20:35:48,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2022-12-13 20:35:48,400 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2022-12-13 20:35:48,401 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 236 flow [2022-12-13 20:35:48,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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 20:35:48,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:48,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:35:48,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:35:48,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 20:35:48,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:48,402 INFO L85 PathProgramCache]: Analyzing trace with hash -874503203, now seen corresponding path program 1 times [2022-12-13 20:35:48,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:48,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597302014] [2022-12-13 20:35:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:48,427 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 20:35:48,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:48,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597302014] [2022-12-13 20:35:48,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597302014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:48,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:48,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:35:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528046529] [2022-12-13 20:35:48,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:48,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:35:48,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:35:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:35:48,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 410 [2022-12-13 20:35:48,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 236 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 20:35:48,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:48,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 410 [2022-12-13 20:35:48,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:06,038 INFO L130 PetriNetUnfolder]: 222649/327648 cut-off events. [2022-12-13 20:36:06,038 INFO L131 PetriNetUnfolder]: For 3297/3297 co-relation queries the response was YES. [2022-12-13 20:36:06,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646052 conditions, 327648 events. 222649/327648 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 9082. Compared 2897740 event pairs, 120956 based on Foata normal form. 0/251835 useless extension candidates. Maximal degree in co-relation 646013. Up to 220520 conditions per place. [2022-12-13 20:36:07,314 INFO L137 encePairwiseOnDemand]: 378/410 looper letters, 114 selfloop transitions, 13 changer transitions 0/143 dead transitions. [2022-12-13 20:36:07,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 143 transitions, 593 flow [2022-12-13 20:36:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:36:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:36:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2022-12-13 20:36:07,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2022-12-13 20:36:07,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2022-12-13 20:36:07,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2022-12-13 20:36:07,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:07,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2022-12-13 20:36:07,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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 20:36:07,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 20:36:07,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 20:36:07,321 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 236 flow. Second operand 3 states and 697 transitions. [2022-12-13 20:36:07,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 143 transitions, 593 flow [2022-12-13 20:36:07,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 143 transitions, 591 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:36:07,341 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 360 flow [2022-12-13 20:36:07,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2022-12-13 20:36:07,342 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2022-12-13 20:36:07,342 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 360 flow [2022-12-13 20:36:07,343 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 20:36:07,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:07,343 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:36:07,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:36:07,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 20:36:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1675024605, now seen corresponding path program 1 times [2022-12-13 20:36:07,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:07,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32485699] [2022-12-13 20:36:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:07,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:07,366 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 20:36:07,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:07,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32485699] [2022-12-13 20:36:07,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32485699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:07,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:07,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:36:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166147622] [2022-12-13 20:36:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:36:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:36:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:36:07,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 410 [2022-12-13 20:36:07,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 360 flow. Second operand has 3 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 20:36:07,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:07,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 410 [2022-12-13 20:36:07,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:26,243 INFO L130 PetriNetUnfolder]: 217060/321840 cut-off events. [2022-12-13 20:36:26,244 INFO L131 PetriNetUnfolder]: For 81139/81918 co-relation queries the response was YES. [2022-12-13 20:36:26,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771600 conditions, 321840 events. 217060/321840 cut-off events. For 81139/81918 co-relation queries the response was YES. Maximal size of possible extension queue 9079. Compared 2863039 event pairs, 150289 based on Foata normal form. 0/279456 useless extension candidates. Maximal degree in co-relation 531429. Up to 304652 conditions per place. [2022-12-13 20:36:27,642 INFO L137 encePairwiseOnDemand]: 406/410 looper letters, 90 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2022-12-13 20:36:27,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 113 transitions, 566 flow [2022-12-13 20:36:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:36:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:36:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2022-12-13 20:36:27,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5414634146341464 [2022-12-13 20:36:27,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2022-12-13 20:36:27,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2022-12-13 20:36:27,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:36:27,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2022-12-13 20:36:27,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 20:36:27,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 20:36:27,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 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 20:36:27,648 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 360 flow. Second operand 3 states and 666 transitions. [2022-12-13 20:36:27,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 113 transitions, 566 flow [2022-12-13 20:36:40,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:36:40,064 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 346 flow [2022-12-13 20:36:40,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2022-12-13 20:36:40,064 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2022-12-13 20:36:40,064 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 346 flow [2022-12-13 20:36:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 20:36:40,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:36:40,065 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:36:40,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:36:40,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 20:36:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:40,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1675024606, now seen corresponding path program 1 times [2022-12-13 20:36:40,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:40,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624312233] [2022-12-13 20:36:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:40,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:40,100 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 20:36:40,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624312233] [2022-12-13 20:36:40,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624312233] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:36:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139484523] [2022-12-13 20:36:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:40,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:40,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:40,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:36:40,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:36:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:40,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:36:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:36:40,174 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 20:36:40,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:36:40,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139484523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:40,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:36:40,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 20:36:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119580840] [2022-12-13 20:36:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:40,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:36:40,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:40,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:36:40,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:36:40,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 410 [2022-12-13 20:36:40,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 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 20:36:40,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:36:40,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 410 [2022-12-13 20:36:40,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:36:59,721 INFO L130 PetriNetUnfolder]: 216708/320953 cut-off events. [2022-12-13 20:36:59,721 INFO L131 PetriNetUnfolder]: For 43056/43873 co-relation queries the response was YES. [2022-12-13 20:37:00,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744783 conditions, 320953 events. 216708/320953 cut-off events. For 43056/43873 co-relation queries the response was YES. Maximal size of possible extension queue 9073. Compared 2853396 event pairs, 171060 based on Foata normal form. 66/269919 useless extension candidates. Maximal degree in co-relation 514447. Up to 304778 conditions per place. [2022-12-13 20:37:01,091 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 85 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2022-12-13 20:37:01,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 520 flow [2022-12-13 20:37:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:37:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:37:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 858 transitions. [2022-12-13 20:37:01,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5231707317073171 [2022-12-13 20:37:01,094 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 858 transitions. [2022-12-13 20:37:01,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 858 transitions. [2022-12-13 20:37:01,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:37:01,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 858 transitions. [2022-12-13 20:37:01,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 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 20:37:01,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 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 20:37:01,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 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 20:37:01,098 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 346 flow. Second operand 4 states and 858 transitions. [2022-12-13 20:37:01,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 520 flow [2022-12-13 20:37:01,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:37:01,239 INFO L231 Difference]: Finished difference. Result has 101 places, 104 transitions, 342 flow [2022-12-13 20:37:01,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=101, PETRI_TRANSITIONS=104} [2022-12-13 20:37:01,240 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2022-12-13 20:37:01,240 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 104 transitions, 342 flow [2022-12-13 20:37:01,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 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 20:37:01,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:37:01,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:37:01,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:37:01,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 20:37:01,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 20:37:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1786042494, now seen corresponding path program 1 times [2022-12-13 20:37:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:01,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889193637] [2022-12-13 20:37:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:01,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:37:01,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:37:01,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889193637] [2022-12-13 20:37:01,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889193637] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:37:01,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746011771] [2022-12-13 20:37:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:01,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:37:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:37:01,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:37:01,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:37:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:01,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:37:01,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:37:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:37:01,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:37:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:37:01,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746011771] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:37:01,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:37:01,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 20:37:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611842283] [2022-12-13 20:37:01,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:37:01,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:37:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:37:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:37:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:37:01,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 410 [2022-12-13 20:37:01,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 104 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 196.57142857142858) internal successors, (1376), 7 states have internal predecessors, (1376), 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 20:37:01,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:37:01,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 410 [2022-12-13 20:37:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:37:01,675 INFO L130 PetriNetUnfolder]: 412/712 cut-off events. [2022-12-13 20:37:01,675 INFO L131 PetriNetUnfolder]: For 534/534 co-relation queries the response was YES. [2022-12-13 20:37:01,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 712 events. 412/712 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3210 event pairs, 19 based on Foata normal form. 77/762 useless extension candidates. Maximal degree in co-relation 902. Up to 394 conditions per place. [2022-12-13 20:37:01,677 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 30 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2022-12-13 20:37:01,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 205 flow [2022-12-13 20:37:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:37:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:37:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1201 transitions. [2022-12-13 20:37:01,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48821138211382115 [2022-12-13 20:37:01,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1201 transitions. [2022-12-13 20:37:01,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1201 transitions. [2022-12-13 20:37:01,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:37:01,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1201 transitions. [2022-12-13 20:37:01,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.16666666666666) internal successors, (1201), 6 states have internal predecessors, (1201), 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 20:37:01,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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 20:37:01,686 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 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 20:37:01,686 INFO L175 Difference]: Start difference. First operand has 101 places, 104 transitions, 342 flow. Second operand 6 states and 1201 transitions. [2022-12-13 20:37:01,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 205 flow [2022-12-13 20:37:01,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 195 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 20:37:01,688 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 91 flow [2022-12-13 20:37:01,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2022-12-13 20:37:01,688 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -61 predicate places. [2022-12-13 20:37:01,688 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 91 flow [2022-12-13 20:37:01,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.57142857142858) internal successors, (1376), 7 states have internal predecessors, (1376), 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 20:37:01,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:37:01,689 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 20:37:01,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 20:37:01,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18f439b-b040-437a-a4eb-5b34b61a8c36/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:37:01,890 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 20:37:01,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:01,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1207686264, now seen corresponding path program 1 times [2022-12-13 20:37:01,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:01,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161738450] [2022-12-13 20:37:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:01,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:37:01,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:37:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:37:01,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:37:01,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:37:01,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 20:37:01,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-12-13 20:37:01,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-12-13 20:37:01,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-12-13 20:37:01,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-12-13 20:37:01,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-12-13 20:37:01,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-12-13 20:37:01,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-12-13 20:37:01,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-12-13 20:37:01,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-12-13 20:37:01,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-12-13 20:37:01,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-12-13 20:37:01,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-12-13 20:37:01,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-12-13 20:37:01,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-12-13 20:37:01,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-12-13 20:37:01,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-12-13 20:37:01,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-12-13 20:37:01,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-12-13 20:37:01,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-12-13 20:37:01,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-12-13 20:37:01,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-12-13 20:37:01,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-12-13 20:37:01,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-12-13 20:37:01,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-12-13 20:37:01,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:37:01,976 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-13 20:37:01,977 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:37:01,978 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 20:37:02,017 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:37:02,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 276 transitions, 596 flow [2022-12-13 20:37:02,099 INFO L130 PetriNetUnfolder]: 115/813 cut-off events. [2022-12-13 20:37:02,099 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:37:02,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 813 events. 115/813 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3593 event pairs, 6 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 565. Up to 32 conditions per place. [2022-12-13 20:37:02,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 276 transitions, 596 flow [2022-12-13 20:37:02,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 276 transitions, 596 flow [2022-12-13 20:37:02,109 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:37:02,109 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 276 transitions, 596 flow [2022-12-13 20:37:02,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 276 transitions, 596 flow [2022-12-13 20:37:02,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 276 transitions, 596 flow [2022-12-13 20:37:02,182 INFO L130 PetriNetUnfolder]: 115/813 cut-off events. [2022-12-13 20:37:02,182 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:37:02,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 813 events. 115/813 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3593 event pairs, 6 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 565. Up to 32 conditions per place. [2022-12-13 20:37:02,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 45552 [2022-12-13 20:37:04,315 INFO L134 LiptonReduction]: Checked pairs total: 154731 [2022-12-13 20:37:04,315 INFO L136 LiptonReduction]: Total number of compositions: 200 [2022-12-13 20:37:04,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:37:04,317 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;@5d811d0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:37:04,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 20:37:04,318 INFO L130 PetriNetUnfolder]: 4/20 cut-off events. [2022-12-13 20:37:04,318 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:37:04,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:37:04,318 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:37:04,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 20:37:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:04,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1827388346, now seen corresponding path program 1 times [2022-12-13 20:37:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:04,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756936303] [2022-12-13 20:37:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:04,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:04,332 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 20:37:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:37:04,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756936303] [2022-12-13 20:37:04,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756936303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:37:04,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:37:04,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:37:04,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111117768] [2022-12-13 20:37:04,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:37:04,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:37:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:37:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:37:04,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:37:04,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 476 [2022-12-13 20:37:04,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 149 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 20:37:04,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:37:04,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 476 [2022-12-13 20:37:04,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand