./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/systemc/kundu1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/kundu1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 --- 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 [2022-12-14 08:18:20,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:18:20,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:18:20,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:18:20,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:18:20,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:18:20,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:18:20,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:18:20,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:18:20,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:18:20,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:18:20,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:18:20,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:18:20,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:18:20,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:18:20,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:18:20,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:18:20,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:18:20,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:18:20,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:18:20,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:18:20,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:18:20,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:18:20,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:18:20,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:18:20,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:18:20,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:18:20,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:18:20,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:18:20,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:18:20,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:18:20,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:18:20,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:18:20,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:18:20,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:18:20,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:18:20,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:18:20,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:18:20,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:18:20,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:18:20,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:18:20,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 08:18:20,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:18:20,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:18:20,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:18:20,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:18:20,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:18:20,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:18:20,918 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:18:20,918 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:18:20,918 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:18:20,918 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:18:20,919 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:18:20,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:18:20,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:18:20,919 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:18:20,919 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:18:20,919 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:18:20,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:18:20,920 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:18:20,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:18:20,921 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:18:20,921 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:18:20,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:18:20,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:18:20,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:18:20,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:18:20,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:18:20,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:18:20,922 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:18:20,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:18:20,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:18:20,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:18:20,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:18:20,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:18:20,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:18:20,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:18:20,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:18:20,923 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:18:20,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:18:20,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:18:20,924 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:18:20,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:18:20,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:18:20,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:18:20,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c114a15ea6b1c9b012290758a6a9559b9c02a944706c9768958a3bd9c86822a7 [2022-12-14 08:18:21,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:18:21,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:18:21,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:18:21,113 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:18:21,113 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:18:21,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/systemc/kundu1.cil.c [2022-12-14 08:18:23,602 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:18:23,788 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:18:23,788 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/sv-benchmarks/c/systemc/kundu1.cil.c [2022-12-14 08:18:23,796 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/data/4f648a3d0/d6bd144011c34be3b1064bdc9951ac37/FLAG76be9d726 [2022-12-14 08:18:24,167 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/data/4f648a3d0/d6bd144011c34be3b1064bdc9951ac37 [2022-12-14 08:18:24,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:18:24,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:18:24,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:18:24,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:18:24,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:18:24,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19722b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24, skipping insertion in model container [2022-12-14 08:18:24,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:18:24,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:18:24,297 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_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-12-14 08:18:24,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:18:24,343 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:18:24,350 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_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/sv-benchmarks/c/systemc/kundu1.cil.c[636,649] [2022-12-14 08:18:24,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:18:24,376 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:18:24,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24 WrapperNode [2022-12-14 08:18:24,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:18:24,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:18:24,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:18:24,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:18:24,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,405 INFO L138 Inliner]: procedures = 32, calls = 36, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 265 [2022-12-14 08:18:24,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:18:24,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:18:24,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:18:24,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:18:24,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:18:24,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:18:24,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:18:24,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:18:24,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (1/1) ... [2022-12-14 08:18:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:18:24,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:24,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:18:24,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:18:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:18:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-14 08:18:24,474 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-14 08:18:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 08:18:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 08:18:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 08:18:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 08:18:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 08:18:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 08:18:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 08:18:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 08:18:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:18:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 08:18:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 08:18:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:18:24,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:18:24,539 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:18:24,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:18:24,773 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:18:24,834 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:18:24,834 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 08:18:24,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:18:24 BoogieIcfgContainer [2022-12-14 08:18:24,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:18:24,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:18:24,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:18:24,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:18:24,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:18:24" (1/3) ... [2022-12-14 08:18:24,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c3d57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:18:24, skipping insertion in model container [2022-12-14 08:18:24,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:18:24" (2/3) ... [2022-12-14 08:18:24,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c3d57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:18:24, skipping insertion in model container [2022-12-14 08:18:24,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:18:24" (3/3) ... [2022-12-14 08:18:24,843 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu1.cil.c [2022-12-14 08:18:24,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:18:24,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 08:18:24,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:18:24,897 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=FINITE_AUTOMATA, 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;@3fd0c767, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:18:24,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 08:18:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 59 states have (on average 1.5593220338983051) internal successors, (92), 70 states have internal predecessors, (92), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 08:18:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 08:18:24,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:24,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:24,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1408976430, now seen corresponding path program 1 times [2022-12-14 08:18:24,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:24,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124890693] [2022-12-14 08:18:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:18:25,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:25,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124890693] [2022-12-14 08:18:25,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124890693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:25,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:25,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:18:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490328267] [2022-12-14 08:18:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:25,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:18:25,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:25,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:18:25,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:18:25,136 INFO L87 Difference]: Start difference. First operand has 89 states, 59 states have (on average 1.5593220338983051) internal successors, (92), 70 states have internal predecessors, (92), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:18:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:25,304 INFO L93 Difference]: Finished difference Result 251 states and 347 transitions. [2022-12-14 08:18:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:18:25,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-12-14 08:18:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:25,312 INFO L225 Difference]: With dead ends: 251 [2022-12-14 08:18:25,312 INFO L226 Difference]: Without dead ends: 155 [2022-12-14 08:18:25,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:18:25,318 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 205 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:25,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 320 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:18:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-14 08:18:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 142. [2022-12-14 08:18:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 104 states have (on average 1.4711538461538463) internal successors, (153), 112 states have internal predecessors, (153), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-14 08:18:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 193 transitions. [2022-12-14 08:18:25,366 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 193 transitions. Word has length 33 [2022-12-14 08:18:25,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:25,367 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 193 transitions. [2022-12-14 08:18:25,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:18:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 193 transitions. [2022-12-14 08:18:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 08:18:25,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:25,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:25,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:18:25,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2106009937, now seen corresponding path program 1 times [2022-12-14 08:18:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:25,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287328103] [2022-12-14 08:18:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:25,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:18:25,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:25,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287328103] [2022-12-14 08:18:25,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287328103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:25,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:25,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:18:25,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378917801] [2022-12-14 08:18:25,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:25,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:18:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:18:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:18:25,457 INFO L87 Difference]: Start difference. First operand 142 states and 193 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:18:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:25,587 INFO L93 Difference]: Finished difference Result 411 states and 558 transitions. [2022-12-14 08:18:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:18:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-12-14 08:18:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:25,591 INFO L225 Difference]: With dead ends: 411 [2022-12-14 08:18:25,591 INFO L226 Difference]: Without dead ends: 274 [2022-12-14 08:18:25,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:18:25,593 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 185 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:25,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 272 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:18:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-12-14 08:18:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 242. [2022-12-14 08:18:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 178 states have (on average 1.3932584269662922) internal successors, (248), 186 states have internal predecessors, (248), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-12-14 08:18:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 320 transitions. [2022-12-14 08:18:25,613 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 320 transitions. Word has length 33 [2022-12-14 08:18:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:25,614 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 320 transitions. [2022-12-14 08:18:25,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:18:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 320 transitions. [2022-12-14 08:18:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 08:18:25,615 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:25,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:25,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:18:25,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash -298468471, now seen corresponding path program 1 times [2022-12-14 08:18:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:25,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307051704] [2022-12-14 08:18:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:18:25,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:25,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307051704] [2022-12-14 08:18:25,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307051704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:25,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:25,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:18:25,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172453100] [2022-12-14 08:18:25,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:25,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:25,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:25,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:25,670 INFO L87 Difference]: Start difference. First operand 242 states and 320 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:25,734 INFO L93 Difference]: Finished difference Result 493 states and 662 transitions. [2022-12-14 08:18:25,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:25,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-12-14 08:18:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:25,736 INFO L225 Difference]: With dead ends: 493 [2022-12-14 08:18:25,736 INFO L226 Difference]: Without dead ends: 357 [2022-12-14 08:18:25,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:25,738 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 74 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:25,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 171 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-12-14 08:18:25,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2022-12-14 08:18:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 267 states have (on average 1.3745318352059925) internal successors, (367), 275 states have internal predecessors, (367), 52 states have call successors, (52), 30 states have call predecessors, (52), 30 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 08:18:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 471 transitions. [2022-12-14 08:18:25,764 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 471 transitions. Word has length 34 [2022-12-14 08:18:25,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:25,764 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 471 transitions. [2022-12-14 08:18:25,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:25,765 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 471 transitions. [2022-12-14 08:18:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 08:18:25,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:25,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:25,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:18:25,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:25,766 INFO L85 PathProgramCache]: Analyzing trace with hash -715377573, now seen corresponding path program 1 times [2022-12-14 08:18:25,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:25,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879524825] [2022-12-14 08:18:25,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:25,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:18:25,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:25,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879524825] [2022-12-14 08:18:25,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879524825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:25,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:25,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:18:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536190288] [2022-12-14 08:18:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:25,807 INFO L87 Difference]: Start difference. First operand 357 states and 471 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:25,851 INFO L93 Difference]: Finished difference Result 357 states and 471 transitions. [2022-12-14 08:18:25,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:25,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2022-12-14 08:18:25,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:25,854 INFO L225 Difference]: With dead ends: 357 [2022-12-14 08:18:25,854 INFO L226 Difference]: Without dead ends: 355 [2022-12-14 08:18:25,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:25,856 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:25,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 83 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-12-14 08:18:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2022-12-14 08:18:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 267 states have (on average 1.3595505617977528) internal successors, (363), 273 states have internal predecessors, (363), 52 states have call successors, (52), 30 states have call predecessors, (52), 30 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 08:18:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 467 transitions. [2022-12-14 08:18:25,878 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 467 transitions. Word has length 35 [2022-12-14 08:18:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:25,878 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 467 transitions. [2022-12-14 08:18:25,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 467 transitions. [2022-12-14 08:18:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 08:18:25,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:25,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:25,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:18:25,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash -701868029, now seen corresponding path program 1 times [2022-12-14 08:18:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:25,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732876713] [2022-12-14 08:18:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:18:25,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:25,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732876713] [2022-12-14 08:18:25,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732876713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:25,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:25,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:18:25,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538284038] [2022-12-14 08:18:25,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:25,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:25,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:25,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:25,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:25,918 INFO L87 Difference]: Start difference. First operand 355 states and 467 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:25,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:25,976 INFO L93 Difference]: Finished difference Result 376 states and 489 transitions. [2022-12-14 08:18:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:25,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2022-12-14 08:18:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:25,979 INFO L225 Difference]: With dead ends: 376 [2022-12-14 08:18:25,979 INFO L226 Difference]: Without dead ends: 374 [2022-12-14 08:18:25,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:25,981 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 76 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:25,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 175 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-12-14 08:18:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 370. [2022-12-14 08:18:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 282 states have (on average 1.3546099290780143) internal successors, (382), 288 states have internal predecessors, (382), 52 states have call successors, (52), 30 states have call predecessors, (52), 30 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 08:18:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 486 transitions. [2022-12-14 08:18:26,009 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 486 transitions. Word has length 36 [2022-12-14 08:18:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:26,009 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 486 transitions. [2022-12-14 08:18:26,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 486 transitions. [2022-12-14 08:18:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 08:18:26,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:26,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:26,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:18:26,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:26,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:26,011 INFO L85 PathProgramCache]: Analyzing trace with hash 499899084, now seen corresponding path program 1 times [2022-12-14 08:18:26,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:26,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289109255] [2022-12-14 08:18:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:26,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:18:26,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:26,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289109255] [2022-12-14 08:18:26,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289109255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:26,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:26,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:18:26,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975849221] [2022-12-14 08:18:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:26,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:18:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:18:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:18:26,061 INFO L87 Difference]: Start difference. First operand 370 states and 486 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:26,167 INFO L93 Difference]: Finished difference Result 559 states and 739 transitions. [2022-12-14 08:18:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:18:26,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-12-14 08:18:26,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:26,169 INFO L225 Difference]: With dead ends: 559 [2022-12-14 08:18:26,169 INFO L226 Difference]: Without dead ends: 426 [2022-12-14 08:18:26,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:18:26,171 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 144 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:26,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 281 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:18:26,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-12-14 08:18:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2022-12-14 08:18:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 324 states have (on average 1.3518518518518519) internal successors, (438), 330 states have internal predecessors, (438), 60 states have call successors, (60), 35 states have call predecessors, (60), 35 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-14 08:18:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 558 transitions. [2022-12-14 08:18:26,203 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 558 transitions. Word has length 42 [2022-12-14 08:18:26,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:26,203 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 558 transitions. [2022-12-14 08:18:26,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:26,204 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 558 transitions. [2022-12-14 08:18:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 08:18:26,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:26,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:26,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 08:18:26,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1682997318, now seen corresponding path program 1 times [2022-12-14 08:18:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:26,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903650213] [2022-12-14 08:18:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:26,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:18:26,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:26,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903650213] [2022-12-14 08:18:26,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903650213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:26,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:26,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:18:26,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615199548] [2022-12-14 08:18:26,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:26,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:18:26,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:26,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:18:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:18:26,257 INFO L87 Difference]: Start difference. First operand 425 states and 558 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:26,389 INFO L93 Difference]: Finished difference Result 613 states and 807 transitions. [2022-12-14 08:18:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:18:26,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-12-14 08:18:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:26,392 INFO L225 Difference]: With dead ends: 613 [2022-12-14 08:18:26,392 INFO L226 Difference]: Without dead ends: 611 [2022-12-14 08:18:26,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:18:26,393 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 196 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:26,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 220 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:18:26,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-12-14 08:18:26,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 607. [2022-12-14 08:18:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 467 states have (on average 1.3490364025695931) internal successors, (630), 473 states have internal predecessors, (630), 84 states have call successors, (84), 50 states have call predecessors, (84), 50 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-14 08:18:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 798 transitions. [2022-12-14 08:18:26,419 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 798 transitions. Word has length 43 [2022-12-14 08:18:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:26,419 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 798 transitions. [2022-12-14 08:18:26,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:18:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 798 transitions. [2022-12-14 08:18:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 08:18:26,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:26,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:26,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 08:18:26,421 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:26,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:26,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1221042742, now seen corresponding path program 1 times [2022-12-14 08:18:26,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:26,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771876221] [2022-12-14 08:18:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:26,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:18:26,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:26,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771876221] [2022-12-14 08:18:26,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771876221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:26,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:26,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:18:26,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949917999] [2022-12-14 08:18:26,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:26,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:26,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:26,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:26,475 INFO L87 Difference]: Start difference. First operand 607 states and 798 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 08:18:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:26,581 INFO L93 Difference]: Finished difference Result 1551 states and 2042 transitions. [2022-12-14 08:18:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:26,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2022-12-14 08:18:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:26,588 INFO L225 Difference]: With dead ends: 1551 [2022-12-14 08:18:26,588 INFO L226 Difference]: Without dead ends: 950 [2022-12-14 08:18:26,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:26,591 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 43 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:26,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 208 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-12-14 08:18:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 765. [2022-12-14 08:18:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 601 states have (on average 1.3594009983361064) internal successors, (817), 608 states have internal predecessors, (817), 96 states have call successors, (96), 62 states have call predecessors, (96), 62 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2022-12-14 08:18:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1009 transitions. [2022-12-14 08:18:26,648 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1009 transitions. Word has length 52 [2022-12-14 08:18:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:26,648 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1009 transitions. [2022-12-14 08:18:26,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 08:18:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1009 transitions. [2022-12-14 08:18:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 08:18:26,650 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:26,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:26,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 08:18:26,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2080641781, now seen corresponding path program 1 times [2022-12-14 08:18:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:26,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448959796] [2022-12-14 08:18:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:26,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:18:26,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:26,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448959796] [2022-12-14 08:18:26,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448959796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:26,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:26,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:18:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622322626] [2022-12-14 08:18:26,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:18:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:18:26,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:18:26,796 INFO L87 Difference]: Start difference. First operand 765 states and 1009 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:18:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:27,047 INFO L93 Difference]: Finished difference Result 2035 states and 2676 transitions. [2022-12-14 08:18:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:18:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 58 [2022-12-14 08:18:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:27,053 INFO L225 Difference]: With dead ends: 2035 [2022-12-14 08:18:27,053 INFO L226 Difference]: Without dead ends: 1276 [2022-12-14 08:18:27,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:18:27,055 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 186 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:27,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 283 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:18:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2022-12-14 08:18:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1238. [2022-12-14 08:18:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 948 states have (on average 1.3386075949367089) internal successors, (1269), 954 states have internal predecessors, (1269), 174 states have call successors, (174), 110 states have call predecessors, (174), 110 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2022-12-14 08:18:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1617 transitions. [2022-12-14 08:18:27,149 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1617 transitions. Word has length 58 [2022-12-14 08:18:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:27,150 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 1617 transitions. [2022-12-14 08:18:27,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:18:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1617 transitions. [2022-12-14 08:18:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 08:18:27,151 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:27,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:27,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 08:18:27,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:27,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1720415673, now seen corresponding path program 1 times [2022-12-14 08:18:27,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:27,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734492875] [2022-12-14 08:18:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:27,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:18:27,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:27,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734492875] [2022-12-14 08:18:27,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734492875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:27,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:18:27,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:18:27,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461066491] [2022-12-14 08:18:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:27,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:27,199 INFO L87 Difference]: Start difference. First operand 1238 states and 1617 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 08:18:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:27,322 INFO L93 Difference]: Finished difference Result 3102 states and 4018 transitions. [2022-12-14 08:18:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:27,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-12-14 08:18:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:27,328 INFO L225 Difference]: With dead ends: 3102 [2022-12-14 08:18:27,328 INFO L226 Difference]: Without dead ends: 1870 [2022-12-14 08:18:27,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:18:27,330 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 46 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:27,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 208 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:27,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-12-14 08:18:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1600. [2022-12-14 08:18:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1246 states have (on average 1.3282504012841092) internal successors, (1655), 1253 states have internal predecessors, (1655), 206 states have call successors, (206), 142 states have call predecessors, (206), 142 states have return successors, (206), 205 states have call predecessors, (206), 206 states have call successors, (206) [2022-12-14 08:18:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2067 transitions. [2022-12-14 08:18:27,410 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2067 transitions. Word has length 59 [2022-12-14 08:18:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:27,411 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2067 transitions. [2022-12-14 08:18:27,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 08:18:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2067 transitions. [2022-12-14 08:18:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 08:18:27,413 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:27,413 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:27,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 08:18:27,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:27,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1683231127, now seen corresponding path program 1 times [2022-12-14 08:18:27,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:27,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972837375] [2022-12-14 08:18:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:27,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 08:18:27,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:27,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972837375] [2022-12-14 08:18:27,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972837375] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:18:27,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862835485] [2022-12-14 08:18:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:27,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:27,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:27,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:18:27,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:18:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:27,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:18:27,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:18:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:18:27,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:18:27,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862835485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:27,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:18:27,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 08:18:27,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88770145] [2022-12-14 08:18:27,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:27,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:27,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:27,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:18:27,670 INFO L87 Difference]: Start difference. First operand 1600 states and 2067 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:18:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:27,780 INFO L93 Difference]: Finished difference Result 2704 states and 3543 transitions. [2022-12-14 08:18:27,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:27,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 90 [2022-12-14 08:18:27,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:27,785 INFO L225 Difference]: With dead ends: 2704 [2022-12-14 08:18:27,785 INFO L226 Difference]: Without dead ends: 1600 [2022-12-14 08:18:27,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:18:27,787 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:27,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 88 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:27,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-12-14 08:18:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2022-12-14 08:18:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1246 states have (on average 1.3170144462279294) internal successors, (1641), 1253 states have internal predecessors, (1641), 206 states have call successors, (206), 142 states have call predecessors, (206), 142 states have return successors, (206), 205 states have call predecessors, (206), 206 states have call successors, (206) [2022-12-14 08:18:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2053 transitions. [2022-12-14 08:18:27,875 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2053 transitions. Word has length 90 [2022-12-14 08:18:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:27,875 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2053 transitions. [2022-12-14 08:18:27,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:18:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2053 transitions. [2022-12-14 08:18:27,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 08:18:27,876 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:27,877 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:27,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:18:28,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 08:18:28,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 674318316, now seen corresponding path program 1 times [2022-12-14 08:18:28,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:28,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743330851] [2022-12-14 08:18:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:28,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 08:18:28,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:28,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743330851] [2022-12-14 08:18:28,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743330851] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:18:28,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192876861] [2022-12-14 08:18:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:28,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:28,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:28,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:18:28,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:18:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:28,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:18:28,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:18:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 08:18:28,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:18:28,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192876861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:28,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:18:28,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2022-12-14 08:18:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935637997] [2022-12-14 08:18:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:28,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:28,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:18:28,301 INFO L87 Difference]: Start difference. First operand 1600 states and 2053 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:18:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:28,468 INFO L93 Difference]: Finished difference Result 4258 states and 5484 transitions. [2022-12-14 08:18:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:28,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 91 [2022-12-14 08:18:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:28,483 INFO L225 Difference]: With dead ends: 4258 [2022-12-14 08:18:28,483 INFO L226 Difference]: Without dead ends: 3154 [2022-12-14 08:18:28,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:18:28,485 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 53 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:28,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 182 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2022-12-14 08:18:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3140. [2022-12-14 08:18:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 2466 states have (on average 1.3146796431467964) internal successors, (3242), 2473 states have internal predecessors, (3242), 386 states have call successors, (386), 282 states have call predecessors, (386), 282 states have return successors, (386), 385 states have call predecessors, (386), 386 states have call successors, (386) [2022-12-14 08:18:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 4014 transitions. [2022-12-14 08:18:28,646 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 4014 transitions. Word has length 91 [2022-12-14 08:18:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:28,646 INFO L495 AbstractCegarLoop]: Abstraction has 3140 states and 4014 transitions. [2022-12-14 08:18:28,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:18:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 4014 transitions. [2022-12-14 08:18:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 08:18:28,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:28,648 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:28,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:18:28,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 08:18:28,849 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:28,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:28,849 INFO L85 PathProgramCache]: Analyzing trace with hash -954331957, now seen corresponding path program 1 times [2022-12-14 08:18:28,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:28,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50530156] [2022-12-14 08:18:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:28,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 08:18:28,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:28,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50530156] [2022-12-14 08:18:28,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50530156] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:18:28,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447204335] [2022-12-14 08:18:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:28,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:28,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:18:28,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:18:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:29,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:18:29,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:18:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:18:29,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:18:29,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447204335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:29,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:18:29,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 08:18:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113926094] [2022-12-14 08:18:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:29,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:29,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:18:29,030 INFO L87 Difference]: Start difference. First operand 3140 states and 4014 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:18:29,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:29,220 INFO L93 Difference]: Finished difference Result 5965 states and 7740 transitions. [2022-12-14 08:18:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:29,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 91 [2022-12-14 08:18:29,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:29,230 INFO L225 Difference]: With dead ends: 5965 [2022-12-14 08:18:29,230 INFO L226 Difference]: Without dead ends: 3791 [2022-12-14 08:18:29,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:18:29,235 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 62 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:29,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 231 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2022-12-14 08:18:29,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3670. [2022-12-14 08:18:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 2834 states have (on average 1.2865208186309103) internal successors, (3646), 2841 states have internal predecessors, (3646), 482 states have call successors, (482), 348 states have call predecessors, (482), 348 states have return successors, (500), 481 states have call predecessors, (500), 482 states have call successors, (500) [2022-12-14 08:18:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 4628 transitions. [2022-12-14 08:18:29,448 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 4628 transitions. Word has length 91 [2022-12-14 08:18:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:29,448 INFO L495 AbstractCegarLoop]: Abstraction has 3670 states and 4628 transitions. [2022-12-14 08:18:29,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:18:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 4628 transitions. [2022-12-14 08:18:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 08:18:29,450 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:29,450 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:29,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 08:18:29,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:29,651 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1261027484, now seen corresponding path program 1 times [2022-12-14 08:18:29,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523088027] [2022-12-14 08:18:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 08:18:29,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:29,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523088027] [2022-12-14 08:18:29,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523088027] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:18:29,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883630312] [2022-12-14 08:18:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:29,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:29,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:29,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:18:29,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:18:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:29,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:18:29,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:18:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:18:29,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:18:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:18:30,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883630312] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:18:30,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604139740] [2022-12-14 08:18:30,041 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 08:18:30,041 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:18:30,045 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:18:30,051 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:18:30,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:18:36,351 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 73 for LOIs [2022-12-14 08:18:36,360 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 77 for LOIs [2022-12-14 08:18:36,368 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 77 for LOIs [2022-12-14 08:18:36,376 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 41 for LOIs [2022-12-14 08:18:36,380 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 73 for LOIs [2022-12-14 08:18:36,478 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:18:40,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1604139740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:40,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:18:40,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [6, 2, 3] total 40 [2022-12-14 08:18:40,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101678375] [2022-12-14 08:18:40,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:40,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 08:18:40,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:40,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 08:18:40,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 08:18:40,987 INFO L87 Difference]: Start difference. First operand 3670 states and 4628 transitions. Second operand has 32 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:18:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:42,978 INFO L93 Difference]: Finished difference Result 7375 states and 9302 transitions. [2022-12-14 08:18:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-14 08:18:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 96 [2022-12-14 08:18:42,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:42,992 INFO L225 Difference]: With dead ends: 7375 [2022-12-14 08:18:42,993 INFO L226 Difference]: Without dead ends: 3705 [2022-12-14 08:18:43,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 229 SyntacticMatches, 26 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=429, Invalid=1923, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 08:18:43,000 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 90 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:43,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 375 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 08:18:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2022-12-14 08:18:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3669. [2022-12-14 08:18:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 2831 states have (on average 1.2847050512186506) internal successors, (3637), 2837 states have internal predecessors, (3637), 484 states have call successors, (484), 348 states have call predecessors, (484), 348 states have return successors, (502), 484 states have call predecessors, (502), 484 states have call successors, (502) [2022-12-14 08:18:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 4623 transitions. [2022-12-14 08:18:43,228 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 4623 transitions. Word has length 96 [2022-12-14 08:18:43,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:43,228 INFO L495 AbstractCegarLoop]: Abstraction has 3669 states and 4623 transitions. [2022-12-14 08:18:43,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:18:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 4623 transitions. [2022-12-14 08:18:43,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 08:18:43,230 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:43,230 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:43,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:18:43,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 08:18:43,431 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash -36395397, now seen corresponding path program 1 times [2022-12-14 08:18:43,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:43,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044547936] [2022-12-14 08:18:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:43,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 08:18:43,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044547936] [2022-12-14 08:18:43,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044547936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:18:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686484535] [2022-12-14 08:18:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:43,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:43,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:43,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:18:43,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:18:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:43,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:18:43,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:18:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:18:43,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:18:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:18:43,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686484535] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:18:43,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1420915722] [2022-12-14 08:18:43,732 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-12-14 08:18:43,732 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:18:43,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:18:43,733 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:18:43,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:18:48,249 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 106 for LOIs [2022-12-14 08:18:48,267 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 114 for LOIs [2022-12-14 08:18:48,287 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 114 for LOIs [2022-12-14 08:18:48,307 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 41 for LOIs [2022-12-14 08:18:48,310 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 122 for LOIs [2022-12-14 08:18:48,636 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:18:53,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1420915722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:53,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:18:53,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [6, 2, 3] total 43 [2022-12-14 08:18:53,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922224049] [2022-12-14 08:18:53,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:53,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 08:18:53,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 08:18:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1496, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 08:18:53,625 INFO L87 Difference]: Start difference. First operand 3669 states and 4623 transitions. Second operand has 35 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:18:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:58,454 INFO L93 Difference]: Finished difference Result 6152 states and 7777 transitions. [2022-12-14 08:18:58,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-14 08:18:58,454 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 97 [2022-12-14 08:18:58,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:58,462 INFO L225 Difference]: With dead ends: 6152 [2022-12-14 08:18:58,462 INFO L226 Difference]: Without dead ends: 3434 [2022-12-14 08:18:58,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 244 SyntacticMatches, 10 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=680, Invalid=3742, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 08:18:58,466 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 62 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:58,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 767 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 08:18:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-12-14 08:18:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3276. [2022-12-14 08:18:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 2530 states have (on average 1.2869565217391303) internal successors, (3256), 2536 states have internal predecessors, (3256), 432 states have call successors, (432), 308 states have call predecessors, (432), 308 states have return successors, (448), 432 states have call predecessors, (448), 432 states have call successors, (448) [2022-12-14 08:18:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4136 transitions. [2022-12-14 08:18:58,633 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4136 transitions. Word has length 97 [2022-12-14 08:18:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:58,633 INFO L495 AbstractCegarLoop]: Abstraction has 3276 states and 4136 transitions. [2022-12-14 08:18:58,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:18:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4136 transitions. [2022-12-14 08:18:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 08:18:58,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:58,635 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:58,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 08:18:58,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 08:18:58,836 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash -43876865, now seen corresponding path program 1 times [2022-12-14 08:18:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:58,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744491313] [2022-12-14 08:18:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:18:59,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:59,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744491313] [2022-12-14 08:18:59,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744491313] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:18:59,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49512814] [2022-12-14 08:18:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:59,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:59,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:59,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:18:59,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 08:18:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:59,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:18:59,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:18:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:18:59,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:18:59,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49512814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:18:59,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:18:59,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-12-14 08:18:59,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577881103] [2022-12-14 08:18:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:18:59,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:18:59,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:18:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:18:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:18:59,153 INFO L87 Difference]: Start difference. First operand 3276 states and 4136 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:18:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:18:59,325 INFO L93 Difference]: Finished difference Result 5866 states and 7440 transitions. [2022-12-14 08:18:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:18:59,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-12-14 08:18:59,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:18:59,334 INFO L225 Difference]: With dead ends: 5866 [2022-12-14 08:18:59,334 INFO L226 Difference]: Without dead ends: 3282 [2022-12-14 08:18:59,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:18:59,338 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:18:59,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 182 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:18:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-12-14 08:18:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3276. [2022-12-14 08:18:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 2530 states have (on average 1.2798418972332015) internal successors, (3238), 2536 states have internal predecessors, (3238), 432 states have call successors, (432), 308 states have call predecessors, (432), 308 states have return successors, (448), 432 states have call predecessors, (448), 432 states have call successors, (448) [2022-12-14 08:18:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4118 transitions. [2022-12-14 08:18:59,515 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4118 transitions. Word has length 98 [2022-12-14 08:18:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:18:59,515 INFO L495 AbstractCegarLoop]: Abstraction has 3276 states and 4118 transitions. [2022-12-14 08:18:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:18:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4118 transitions. [2022-12-14 08:18:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 08:18:59,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:18:59,517 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:18:59,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 08:18:59,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 08:18:59,718 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:18:59,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:18:59,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1318979554, now seen corresponding path program 1 times [2022-12-14 08:18:59,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:18:59,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370631806] [2022-12-14 08:18:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:59,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:18:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:18:59,989 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:18:59,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:18:59,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370631806] [2022-12-14 08:18:59,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370631806] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:18:59,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109895259] [2022-12-14 08:18:59,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:18:59,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:18:59,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:18:59,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:18:59,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:19:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:00,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:19:00,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:19:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:19:00,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:19:00,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109895259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:00,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:19:00,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-14 08:19:00,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077309880] [2022-12-14 08:19:00,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:00,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:19:00,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:19:00,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:19:00,075 INFO L87 Difference]: Start difference. First operand 3276 states and 4118 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:19:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:19:00,245 INFO L93 Difference]: Finished difference Result 5919 states and 7519 transitions. [2022-12-14 08:19:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:19:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 98 [2022-12-14 08:19:00,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:19:00,254 INFO L225 Difference]: With dead ends: 5919 [2022-12-14 08:19:00,254 INFO L226 Difference]: Without dead ends: 3335 [2022-12-14 08:19:00,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:19:00,258 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 73 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:19:00,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 226 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:19:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2022-12-14 08:19:00,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3276. [2022-12-14 08:19:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 2530 states have (on average 1.265612648221344) internal successors, (3202), 2536 states have internal predecessors, (3202), 432 states have call successors, (432), 308 states have call predecessors, (432), 308 states have return successors, (448), 432 states have call predecessors, (448), 432 states have call successors, (448) [2022-12-14 08:19:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4082 transitions. [2022-12-14 08:19:00,435 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4082 transitions. Word has length 98 [2022-12-14 08:19:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:19:00,436 INFO L495 AbstractCegarLoop]: Abstraction has 3276 states and 4082 transitions. [2022-12-14 08:19:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:19:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4082 transitions. [2022-12-14 08:19:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 08:19:00,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:19:00,438 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:19:00,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 08:19:00,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 08:19:00,639 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:19:00,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:19:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1670431523, now seen corresponding path program 1 times [2022-12-14 08:19:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:19:00,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005683629] [2022-12-14 08:19:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:19:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:19:00,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:19:00,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005683629] [2022-12-14 08:19:00,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005683629] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:19:00,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183964037] [2022-12-14 08:19:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:00,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:19:00,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:19:00,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:19:00,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 08:19:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:00,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:19:00,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:19:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:19:01,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:19:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:19:01,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183964037] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:19:01,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440940084] [2022-12-14 08:19:01,080 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-12-14 08:19:01,080 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:19:01,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:19:01,080 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:19:01,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:19:02,981 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-12-14 08:19:02,997 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-12-14 08:19:03,014 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-12-14 08:19:03,032 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-12-14 08:19:03,035 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-12-14 08:19:03,122 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:19:06,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1440940084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:06,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:19:06,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [12, 4, 5] total 45 [2022-12-14 08:19:06,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527569652] [2022-12-14 08:19:06,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:06,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 08:19:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:06,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 08:19:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1705, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 08:19:06,503 INFO L87 Difference]: Start difference. First operand 3276 states and 4082 transitions. Second operand has 32 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:19:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:19:08,200 INFO L93 Difference]: Finished difference Result 6073 states and 7577 transitions. [2022-12-14 08:19:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-14 08:19:08,200 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 99 [2022-12-14 08:19:08,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:19:08,207 INFO L225 Difference]: With dead ends: 6073 [2022-12-14 08:19:08,207 INFO L226 Difference]: Without dead ends: 3489 [2022-12-14 08:19:08,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 258 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=466, Invalid=3074, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 08:19:08,212 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 72 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:19:08,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 424 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 08:19:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2022-12-14 08:19:08,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3401. [2022-12-14 08:19:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 2627 states have (on average 1.2622763608679102) internal successors, (3316), 2633 states have internal predecessors, (3316), 448 states have call successors, (448), 320 states have call predecessors, (448), 320 states have return successors, (464), 448 states have call predecessors, (464), 448 states have call successors, (464) [2022-12-14 08:19:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 4228 transitions. [2022-12-14 08:19:08,394 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 4228 transitions. Word has length 99 [2022-12-14 08:19:08,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:19:08,394 INFO L495 AbstractCegarLoop]: Abstraction has 3401 states and 4228 transitions. [2022-12-14 08:19:08,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:19:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 4228 transitions. [2022-12-14 08:19:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 08:19:08,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:19:08,396 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:19:08,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 08:19:08,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 08:19:08,598 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:19:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:19:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1611922393, now seen corresponding path program 1 times [2022-12-14 08:19:08,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:19:08,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998363250] [2022-12-14 08:19:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:08,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:19:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:19:08,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:19:08,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998363250] [2022-12-14 08:19:08,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998363250] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:19:08,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784664279] [2022-12-14 08:19:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:08,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:19:08,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:19:08,806 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:19:08,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 08:19:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:08,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:19:08,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:19:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:19:08,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:19:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:19:09,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784664279] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:19:09,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1800576441] [2022-12-14 08:19:09,047 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 08:19:09,047 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:19:09,048 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:19:09,048 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:19:09,048 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:19:11,762 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-12-14 08:19:11,778 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-12-14 08:19:11,796 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-12-14 08:19:11,813 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-12-14 08:19:11,817 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-12-14 08:19:11,910 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:19:17,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1800576441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:17,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:19:17,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [12, 3, 4] total 49 [2022-12-14 08:19:17,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057801207] [2022-12-14 08:19:17,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:17,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 08:19:17,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 08:19:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2067, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 08:19:17,173 INFO L87 Difference]: Start difference. First operand 3401 states and 4228 transitions. Second operand has 33 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:19:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:19:20,957 INFO L93 Difference]: Finished difference Result 5939 states and 7403 transitions. [2022-12-14 08:19:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 08:19:20,958 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 100 [2022-12-14 08:19:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:19:20,963 INFO L225 Difference]: With dead ends: 5939 [2022-12-14 08:19:20,963 INFO L226 Difference]: Without dead ends: 3355 [2022-12-14 08:19:20,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 250 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=470, Invalid=3562, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 08:19:20,967 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 49 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:19:20,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 780 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 08:19:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2022-12-14 08:19:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3113. [2022-12-14 08:19:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 2403 states have (on average 1.2617561381606326) internal successors, (3032), 2409 states have internal predecessors, (3032), 412 states have call successors, (412), 292 states have call predecessors, (412), 292 states have return successors, (428), 412 states have call predecessors, (428), 412 states have call successors, (428) [2022-12-14 08:19:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 3872 transitions. [2022-12-14 08:19:21,139 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 3872 transitions. Word has length 100 [2022-12-14 08:19:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:19:21,139 INFO L495 AbstractCegarLoop]: Abstraction has 3113 states and 3872 transitions. [2022-12-14 08:19:21,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:19:21,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 3872 transitions. [2022-12-14 08:19:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 08:19:21,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:19:21,141 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:19:21,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 08:19:21,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:19:21,343 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:19:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:19:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -626310190, now seen corresponding path program 1 times [2022-12-14 08:19:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:19:21,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637116693] [2022-12-14 08:19:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:21,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:19:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 08:19:21,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:19:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637116693] [2022-12-14 08:19:21,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637116693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:21,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:19:21,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:19:21,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871997717] [2022-12-14 08:19:21,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:21,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:19:21,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:21,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:19:21,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:19:21,400 INFO L87 Difference]: Start difference. First operand 3113 states and 3872 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:19:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:19:21,689 INFO L93 Difference]: Finished difference Result 4938 states and 6194 transitions. [2022-12-14 08:19:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:19:21,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 102 [2022-12-14 08:19:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:19:21,693 INFO L225 Difference]: With dead ends: 4938 [2022-12-14 08:19:21,693 INFO L226 Difference]: Without dead ends: 2616 [2022-12-14 08:19:21,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:19:21,696 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 170 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:19:21,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 256 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:19:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2022-12-14 08:19:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2533. [2022-12-14 08:19:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1969 states have (on average 1.2513966480446927) internal successors, (2464), 1975 states have internal predecessors, (2464), 326 states have call successors, (326), 232 states have call predecessors, (326), 232 states have return successors, (326), 326 states have call predecessors, (326), 326 states have call successors, (326) [2022-12-14 08:19:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3116 transitions. [2022-12-14 08:19:21,850 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3116 transitions. Word has length 102 [2022-12-14 08:19:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:19:21,850 INFO L495 AbstractCegarLoop]: Abstraction has 2533 states and 3116 transitions. [2022-12-14 08:19:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:19:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3116 transitions. [2022-12-14 08:19:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 08:19:21,852 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:19:21,852 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:19:21,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 08:19:21,852 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:19:21,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:19:21,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1467928163, now seen corresponding path program 1 times [2022-12-14 08:19:21,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:19:21,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059391083] [2022-12-14 08:19:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:19:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:19:21,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:19:21,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059391083] [2022-12-14 08:19:21,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059391083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:21,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:19:21,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:19:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611778230] [2022-12-14 08:19:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:21,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:19:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:19:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:19:21,879 INFO L87 Difference]: Start difference. First operand 2533 states and 3116 transitions. Second operand has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:19:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:19:22,048 INFO L93 Difference]: Finished difference Result 2533 states and 3116 transitions. [2022-12-14 08:19:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:19:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2022-12-14 08:19:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:19:22,053 INFO L225 Difference]: With dead ends: 2533 [2022-12-14 08:19:22,053 INFO L226 Difference]: Without dead ends: 2531 [2022-12-14 08:19:22,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:19:22,054 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:19:22,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 78 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:19:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-12-14 08:19:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2521. [2022-12-14 08:19:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 1959 states have (on average 1.2414497192445124) internal successors, (2432), 1963 states have internal predecessors, (2432), 326 states have call successors, (326), 232 states have call predecessors, (326), 232 states have return successors, (326), 326 states have call predecessors, (326), 326 states have call successors, (326) [2022-12-14 08:19:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3084 transitions. [2022-12-14 08:19:22,214 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3084 transitions. Word has length 103 [2022-12-14 08:19:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:19:22,215 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 3084 transitions. [2022-12-14 08:19:22,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:19:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3084 transitions. [2022-12-14 08:19:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 08:19:22,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:19:22,216 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:19:22,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 08:19:22,216 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:19:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:19:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash 922474082, now seen corresponding path program 1 times [2022-12-14 08:19:22,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:19:22,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361533968] [2022-12-14 08:19:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:22,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:19:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 08:19:22,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:19:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361533968] [2022-12-14 08:19:22,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361533968] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:19:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654390218] [2022-12-14 08:19:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:22,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:19:22,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:19:22,278 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:19:22,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 08:19:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:22,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:19:22,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:19:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:19:22,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:19:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:19:22,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654390218] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:19:22,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [464254206] [2022-12-14 08:19:22,467 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 08:19:22,467 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:19:22,467 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:19:22,467 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:19:22,467 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:19:28,122 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 106 for LOIs [2022-12-14 08:19:28,140 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 114 for LOIs [2022-12-14 08:19:28,159 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 114 for LOIs [2022-12-14 08:19:28,179 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 41 for LOIs [2022-12-14 08:19:28,182 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 122 for LOIs [2022-12-14 08:19:28,491 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:19:34,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [464254206] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:34,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:19:34,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [6, 2, 3] total 51 [2022-12-14 08:19:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187477872] [2022-12-14 08:19:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:34,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 08:19:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 08:19:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=2151, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 08:19:34,595 INFO L87 Difference]: Start difference. First operand 2521 states and 3084 transitions. Second operand has 43 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:19:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:19:40,334 INFO L93 Difference]: Finished difference Result 4640 states and 5676 transitions. [2022-12-14 08:19:40,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-14 08:19:40,334 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 103 [2022-12-14 08:19:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:19:40,338 INFO L225 Difference]: With dead ends: 4640 [2022-12-14 08:19:40,338 INFO L226 Difference]: Without dead ends: 2697 [2022-12-14 08:19:40,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 256 SyntacticMatches, 9 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=764, Invalid=4936, Unknown=0, NotChecked=0, Total=5700 [2022-12-14 08:19:40,342 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 122 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:19:40,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 604 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 08:19:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2022-12-14 08:19:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2640. [2022-12-14 08:19:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2052 states have (on average 1.2373294346978558) internal successors, (2539), 2056 states have internal predecessors, (2539), 341 states have call successors, (341), 243 states have call predecessors, (341), 243 states have return successors, (341), 341 states have call predecessors, (341), 341 states have call successors, (341) [2022-12-14 08:19:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3221 transitions. [2022-12-14 08:19:40,528 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3221 transitions. Word has length 103 [2022-12-14 08:19:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:19:40,528 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 3221 transitions. [2022-12-14 08:19:40,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:19:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3221 transitions. [2022-12-14 08:19:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-14 08:19:40,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:19:40,529 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:19:40,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 08:19:40,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:19:40,730 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:19:40,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:19:40,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1652987755, now seen corresponding path program 1 times [2022-12-14 08:19:40,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:19:40,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873407111] [2022-12-14 08:19:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:40,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:19:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 08:19:40,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:19:40,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873407111] [2022-12-14 08:19:40,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873407111] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:19:40,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168796587] [2022-12-14 08:19:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:19:40,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:19:40,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:19:40,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:19:40,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 08:19:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:19:40,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:19:40,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:19:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 08:19:40,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:19:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-14 08:19:41,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168796587] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:19:41,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [498072436] [2022-12-14 08:19:41,005 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 08:19:41,005 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:19:41,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:19:41,006 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:19:41,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:19:47,270 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 74 for LOIs [2022-12-14 08:19:47,278 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 77 for LOIs [2022-12-14 08:19:47,286 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 77 for LOIs [2022-12-14 08:19:47,294 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 44 for LOIs [2022-12-14 08:19:47,298 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 77 for LOIs [2022-12-14 08:19:47,400 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:19:53,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [498072436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:19:53,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:19:53,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [6, 2, 3] total 52 [2022-12-14 08:19:53,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555838132] [2022-12-14 08:19:53,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:19:53,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 08:19:53,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:19:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 08:19:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=2272, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 08:19:53,964 INFO L87 Difference]: Start difference. First operand 2640 states and 3221 transitions. Second operand has 44 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:20:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:06,324 INFO L93 Difference]: Finished difference Result 4400 states and 5380 transitions. [2022-12-14 08:20:06,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-14 08:20:06,325 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 104 [2022-12-14 08:20:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:06,330 INFO L225 Difference]: With dead ends: 4400 [2022-12-14 08:20:06,330 INFO L226 Difference]: Without dead ends: 2954 [2022-12-14 08:20:06,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 259 SyntacticMatches, 7 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=1351, Invalid=10859, Unknown=0, NotChecked=0, Total=12210 [2022-12-14 08:20:06,333 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 199 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 3478 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:06,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1047 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3478 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 08:20:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2022-12-14 08:20:06,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2541. [2022-12-14 08:20:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 1979 states have (on average 1.2395149065184436) internal successors, (2453), 1983 states have internal predecessors, (2453), 326 states have call successors, (326), 232 states have call predecessors, (326), 232 states have return successors, (326), 326 states have call predecessors, (326), 326 states have call successors, (326) [2022-12-14 08:20:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3105 transitions. [2022-12-14 08:20:06,519 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3105 transitions. Word has length 104 [2022-12-14 08:20:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:06,519 INFO L495 AbstractCegarLoop]: Abstraction has 2541 states and 3105 transitions. [2022-12-14 08:20:06,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 6 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:20:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3105 transitions. [2022-12-14 08:20:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-14 08:20:06,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:06,521 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:06,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 08:20:06,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 08:20:06,721 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:20:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1357019406, now seen corresponding path program 1 times [2022-12-14 08:20:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:06,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966596686] [2022-12-14 08:20:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 08:20:06,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:06,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966596686] [2022-12-14 08:20:06,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966596686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:06,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:20:06,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:20:06,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366884294] [2022-12-14 08:20:06,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:06,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:20:06,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:20:06,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:20:06,786 INFO L87 Difference]: Start difference. First operand 2541 states and 3105 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:20:07,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:07,200 INFO L93 Difference]: Finished difference Result 5047 states and 6189 transitions. [2022-12-14 08:20:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 08:20:07,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-12-14 08:20:07,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:07,205 INFO L225 Difference]: With dead ends: 5047 [2022-12-14 08:20:07,205 INFO L226 Difference]: Without dead ends: 2653 [2022-12-14 08:20:07,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:20:07,208 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 181 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:07,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 337 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:20:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2022-12-14 08:20:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2491. [2022-12-14 08:20:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2491 states, 1925 states have (on average 1.2316883116883117) internal successors, (2371), 1932 states have internal predecessors, (2371), 328 states have call successors, (328), 231 states have call predecessors, (328), 234 states have return successors, (340), 328 states have call predecessors, (340), 328 states have call successors, (340) [2022-12-14 08:20:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 3039 transitions. [2022-12-14 08:20:07,409 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 3039 transitions. Word has length 106 [2022-12-14 08:20:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:07,409 INFO L495 AbstractCegarLoop]: Abstraction has 2491 states and 3039 transitions. [2022-12-14 08:20:07,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:20:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 3039 transitions. [2022-12-14 08:20:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 08:20:07,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:07,411 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:07,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 08:20:07,411 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:20:07,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:07,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2051790746, now seen corresponding path program 1 times [2022-12-14 08:20:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:07,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84289942] [2022-12-14 08:20:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:07,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 08:20:07,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:07,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84289942] [2022-12-14 08:20:07,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84289942] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:20:07,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219304045] [2022-12-14 08:20:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:07,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:07,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:07,568 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:20:07,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 08:20:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:07,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:20:07,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:20:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:20:07,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:20:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 08:20:07,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219304045] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:20:07,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [963781310] [2022-12-14 08:20:07,780 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2022-12-14 08:20:07,780 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:20:07,780 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:20:07,780 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:20:07,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:20:10,002 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 103 for LOIs [2022-12-14 08:20:10,018 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 111 for LOIs [2022-12-14 08:20:10,036 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 111 for LOIs [2022-12-14 08:20:10,054 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-12-14 08:20:10,057 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 119 for LOIs [2022-12-14 08:20:10,150 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:20:14,751 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '191459#(and (<= 0 ~data_0~0) (<= |ULTIMATE.start_eval_~tmp___2~0#1| 1) (< 2147483648 ~num~0) (= ~i~0 0) (= ~e~0 0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= ~P_1_ev~0 0) (= |ULTIMATE.start_main_~count~0#1| 0) (= ~C_1_pr~0 0) (not (= |ULTIMATE.start_eval_~tmp___1~0#1| 0)) (= ~max_loop~0 2) (= ~P_1_i~0 1) (= ~C_1_pc~0 0) (<= 0 ~P_1_pc~0) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_eval_~tmp___2~0#1| 0)) (<= 0 |ULTIMATE.start_eval_~tmp___2~0#1|) (= ~C_1_ev~0 0) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= ~data_1~0 0) (<= 0 (+ |ULTIMATE.start_eval_~tmp___1~0#1| 2147483648)) (= ~timer~0 0) (= ~C_1_st~0 1) (= ~C_1_i~0 1) (not (= ~P_1_st~0 0)) (= |#NULL.base| 0))' at error location [2022-12-14 08:20:14,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:20:14,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:20:14,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 5] total 15 [2022-12-14 08:20:14,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246741236] [2022-12-14 08:20:14,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:20:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 08:20:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 08:20:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1937, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 08:20:14,753 INFO L87 Difference]: Start difference. First operand 2491 states and 3039 transitions. Second operand has 15 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 5 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (38), 7 states have call predecessors, (38), 5 states have call successors, (38) [2022-12-14 08:20:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:16,317 INFO L93 Difference]: Finished difference Result 5512 states and 7015 transitions. [2022-12-14 08:20:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-14 08:20:16,317 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 5 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (38), 7 states have call predecessors, (38), 5 states have call successors, (38) Word has length 108 [2022-12-14 08:20:16,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:16,322 INFO L225 Difference]: With dead ends: 5512 [2022-12-14 08:20:16,322 INFO L226 Difference]: Without dead ends: 3027 [2022-12-14 08:20:16,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 286 SyntacticMatches, 10 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4560 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1305, Invalid=10467, Unknown=0, NotChecked=0, Total=11772 [2022-12-14 08:20:16,327 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 656 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:16,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1343 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 08:20:16,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2022-12-14 08:20:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 1720. [2022-12-14 08:20:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1354 states have (on average 1.240029542097489) internal successors, (1679), 1361 states have internal predecessors, (1679), 203 states have call successors, (203), 155 states have call predecessors, (203), 159 states have return successors, (219), 203 states have call predecessors, (219), 203 states have call successors, (219) [2022-12-14 08:20:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2101 transitions. [2022-12-14 08:20:16,491 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2101 transitions. Word has length 108 [2022-12-14 08:20:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:16,492 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2101 transitions. [2022-12-14 08:20:16,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 5 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (38), 7 states have call predecessors, (38), 5 states have call successors, (38) [2022-12-14 08:20:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2101 transitions. [2022-12-14 08:20:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 08:20:16,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:16,493 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:16,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 08:20:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 08:20:16,693 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:20:16,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash 723755927, now seen corresponding path program 1 times [2022-12-14 08:20:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:16,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103041912] [2022-12-14 08:20:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-14 08:20:16,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103041912] [2022-12-14 08:20:16,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103041912] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:20:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665571220] [2022-12-14 08:20:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:16,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:16,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:16,745 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:20:16,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 08:20:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:16,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:20:16,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:20:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 08:20:16,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:20:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-14 08:20:16,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665571220] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:20:16,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1718973029] [2022-12-14 08:20:16,939 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-12-14 08:20:16,939 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:20:16,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:20:16,939 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:20:16,939 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:20:24,781 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 108 for LOIs [2022-12-14 08:20:24,799 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 116 for LOIs [2022-12-14 08:20:24,818 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 116 for LOIs [2022-12-14 08:20:24,838 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 70 for LOIs [2022-12-14 08:20:24,847 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 43 for LOIs [2022-12-14 08:20:24,908 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:20:28,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1718973029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:28,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:20:28,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [6, 2, 3] total 41 [2022-12-14 08:20:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091274581] [2022-12-14 08:20:28,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:28,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 08:20:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:28,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 08:20:28,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1357, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 08:20:28,793 INFO L87 Difference]: Start difference. First operand 1720 states and 2101 transitions. Second operand has 33 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:20:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:32,634 INFO L93 Difference]: Finished difference Result 3115 states and 3846 transitions. [2022-12-14 08:20:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 08:20:32,634 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 108 [2022-12-14 08:20:32,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:32,637 INFO L225 Difference]: With dead ends: 3115 [2022-12-14 08:20:32,637 INFO L226 Difference]: Without dead ends: 1938 [2022-12-14 08:20:32,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 271 SyntacticMatches, 19 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=526, Invalid=2780, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 08:20:32,639 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 123 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:32,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 659 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 08:20:32,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2022-12-14 08:20:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1872. [2022-12-14 08:20:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1463 states have (on average 1.2406015037593985) internal successors, (1815), 1470 states have internal predecessors, (1815), 234 states have call successors, (234), 167 states have call predecessors, (234), 171 states have return successors, (250), 234 states have call predecessors, (250), 234 states have call successors, (250) [2022-12-14 08:20:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2299 transitions. [2022-12-14 08:20:32,822 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2299 transitions. Word has length 108 [2022-12-14 08:20:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:32,823 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 2299 transitions. [2022-12-14 08:20:32,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:20:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2299 transitions. [2022-12-14 08:20:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 08:20:32,824 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:32,824 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:32,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 08:20:33,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 08:20:33,025 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:20:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:33,025 INFO L85 PathProgramCache]: Analyzing trace with hash 210051118, now seen corresponding path program 1 times [2022-12-14 08:20:33,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:33,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103145671] [2022-12-14 08:20:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:33,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-14 08:20:33,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:33,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103145671] [2022-12-14 08:20:33,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103145671] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:20:33,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306994174] [2022-12-14 08:20:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:33,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:33,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:33,075 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:20:33,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 08:20:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:33,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:20:33,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:20:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 08:20:33,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:20:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-14 08:20:33,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306994174] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:20:33,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [70928435] [2022-12-14 08:20:33,290 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-12-14 08:20:33,290 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:20:33,291 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:20:33,291 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:20:33,291 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:20:39,469 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 108 for LOIs [2022-12-14 08:20:39,487 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 116 for LOIs [2022-12-14 08:20:39,507 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 116 for LOIs [2022-12-14 08:20:39,527 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 73 for LOIs [2022-12-14 08:20:39,537 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 43 for LOIs [2022-12-14 08:20:39,577 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:20:44,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [70928435] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:20:44,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:20:44,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [6, 2, 3] total 42 [2022-12-14 08:20:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826153965] [2022-12-14 08:20:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:20:44,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 08:20:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:20:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 08:20:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 08:20:44,583 INFO L87 Difference]: Start difference. First operand 1872 states and 2299 transitions. Second operand has 34 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:20:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:20:50,382 INFO L93 Difference]: Finished difference Result 2909 states and 3594 transitions. [2022-12-14 08:20:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-14 08:20:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 109 [2022-12-14 08:20:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:20:50,386 INFO L225 Difference]: With dead ends: 2909 [2022-12-14 08:20:50,386 INFO L226 Difference]: Without dead ends: 1728 [2022-12-14 08:20:50,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 271 SyntacticMatches, 20 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=595, Invalid=3437, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 08:20:50,388 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 68 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:20:50,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 754 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 08:20:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2022-12-14 08:20:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1489. [2022-12-14 08:20:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1172 states have (on average 1.234641638225256) internal successors, (1447), 1178 states have internal predecessors, (1447), 176 states have call successors, (176), 134 states have call predecessors, (176), 137 states have return successors, (188), 176 states have call predecessors, (188), 176 states have call successors, (188) [2022-12-14 08:20:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1811 transitions. [2022-12-14 08:20:50,585 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1811 transitions. Word has length 109 [2022-12-14 08:20:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:20:50,585 INFO L495 AbstractCegarLoop]: Abstraction has 1489 states and 1811 transitions. [2022-12-14 08:20:50,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:20:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1811 transitions. [2022-12-14 08:20:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 08:20:50,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:20:50,586 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:20:50,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 08:20:50,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-14 08:20:50,788 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:20:50,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:20:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1170500765, now seen corresponding path program 1 times [2022-12-14 08:20:50,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:20:50,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906283292] [2022-12-14 08:20:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:50,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:20:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-14 08:20:50,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:20:50,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906283292] [2022-12-14 08:20:50,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906283292] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:20:50,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725070129] [2022-12-14 08:20:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:20:50,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:20:50,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:20:50,880 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:20:50,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 08:20:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:20:50,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:20:50,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:20:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 08:20:51,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:20:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 08:20:51,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725070129] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:20:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1159972200] [2022-12-14 08:20:51,093 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 08:20:51,093 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:20:51,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:20:51,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:20:51,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:20:56,871 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 106 for LOIs [2022-12-14 08:20:56,888 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 114 for LOIs [2022-12-14 08:20:56,907 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 114 for LOIs [2022-12-14 08:20:56,925 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 41 for LOIs [2022-12-14 08:20:56,929 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 122 for LOIs [2022-12-14 08:20:57,266 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:21:03,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1159972200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:21:03,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:21:03,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [6, 2, 3] total 52 [2022-12-14 08:21:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005505503] [2022-12-14 08:21:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:21:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 08:21:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:21:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 08:21:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=2189, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 08:21:03,689 INFO L87 Difference]: Start difference. First operand 1489 states and 1811 transitions. Second operand has 44 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:21:09,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:21:09,279 INFO L93 Difference]: Finished difference Result 3041 states and 3711 transitions. [2022-12-14 08:21:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-14 08:21:09,280 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 111 [2022-12-14 08:21:09,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:21:09,282 INFO L225 Difference]: With dead ends: 3041 [2022-12-14 08:21:09,282 INFO L226 Difference]: Without dead ends: 1764 [2022-12-14 08:21:09,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 275 SyntacticMatches, 13 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2612 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=960, Invalid=5846, Unknown=0, NotChecked=0, Total=6806 [2022-12-14 08:21:09,284 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 192 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:21:09,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 620 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 08:21:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-12-14 08:21:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1669. [2022-12-14 08:21:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1316 states have (on average 1.2302431610942248) internal successors, (1619), 1322 states have internal predecessors, (1619), 196 states have call successors, (196), 150 states have call predecessors, (196), 153 states have return successors, (208), 196 states have call predecessors, (208), 196 states have call successors, (208) [2022-12-14 08:21:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2023 transitions. [2022-12-14 08:21:09,505 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2023 transitions. Word has length 111 [2022-12-14 08:21:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:21:09,505 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2023 transitions. [2022-12-14 08:21:09,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:21:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2023 transitions. [2022-12-14 08:21:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 08:21:09,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:21:09,506 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:21:09,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 08:21:09,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 08:21:09,707 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:21:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:21:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1981990036, now seen corresponding path program 1 times [2022-12-14 08:21:09,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:21:09,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082067829] [2022-12-14 08:21:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:21:09,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:21:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:21:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 08:21:09,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:21:09,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082067829] [2022-12-14 08:21:09,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082067829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:21:09,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740229634] [2022-12-14 08:21:09,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:21:09,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:21:09,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:21:09,758 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:21:09,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 08:21:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:21:09,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:21:09,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:21:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 08:21:09,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:21:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 08:21:09,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740229634] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:21:09,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [340388519] [2022-12-14 08:21:09,977 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 08:21:09,977 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:21:09,978 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:21:09,978 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:21:09,978 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:21:17,210 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 70 for LOIs [2022-12-14 08:21:17,217 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 65 for LOIs [2022-12-14 08:21:17,223 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 65 for LOIs [2022-12-14 08:21:17,228 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 70 for LOIs [2022-12-14 08:21:17,238 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 65 for LOIs [2022-12-14 08:21:17,315 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:21:22,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [340388519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:21:22,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:21:22,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [6, 2, 3] total 50 [2022-12-14 08:21:22,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548452733] [2022-12-14 08:21:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:21:22,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 08:21:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:21:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 08:21:22,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=2089, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 08:21:22,589 INFO L87 Difference]: Start difference. First operand 1669 states and 2023 transitions. Second operand has 42 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:21:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:21:33,015 INFO L93 Difference]: Finished difference Result 3108 states and 3792 transitions. [2022-12-14 08:21:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-12-14 08:21:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 112 [2022-12-14 08:21:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:21:33,018 INFO L225 Difference]: With dead ends: 3108 [2022-12-14 08:21:33,018 INFO L226 Difference]: Without dead ends: 1831 [2022-12-14 08:21:33,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 275 SyntacticMatches, 17 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5619 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=1509, Invalid=13497, Unknown=0, NotChecked=0, Total=15006 [2022-12-14 08:21:33,022 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 216 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 3810 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 3882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:21:33,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 969 Invalid, 3882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3810 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 08:21:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-12-14 08:21:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1478. [2022-12-14 08:21:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1161 states have (on average 1.2325581395348837) internal successors, (1431), 1167 states have internal predecessors, (1431), 176 states have call successors, (176), 134 states have call predecessors, (176), 137 states have return successors, (188), 176 states have call predecessors, (188), 176 states have call successors, (188) [2022-12-14 08:21:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1795 transitions. [2022-12-14 08:21:33,215 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1795 transitions. Word has length 112 [2022-12-14 08:21:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:21:33,215 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 1795 transitions. [2022-12-14 08:21:33,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 37 states have internal predecessors, (57), 6 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-12-14 08:21:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1795 transitions. [2022-12-14 08:21:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 08:21:33,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:21:33,217 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:21:33,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 08:21:33,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 08:21:33,418 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:21:33,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:21:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash 623046924, now seen corresponding path program 1 times [2022-12-14 08:21:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:21:33,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895530966] [2022-12-14 08:21:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:21:33,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:21:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:21:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 08:21:33,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:21:33,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895530966] [2022-12-14 08:21:33,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895530966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:21:33,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:21:33,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:21:33,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214151879] [2022-12-14 08:21:33,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:21:33,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:21:33,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:21:33,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:21:33,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:21:33,474 INFO L87 Difference]: Start difference. First operand 1478 states and 1795 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:21:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:21:33,762 INFO L93 Difference]: Finished difference Result 3548 states and 4311 transitions. [2022-12-14 08:21:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:21:33,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-12-14 08:21:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:21:33,766 INFO L225 Difference]: With dead ends: 3548 [2022-12-14 08:21:33,766 INFO L226 Difference]: Without dead ends: 2056 [2022-12-14 08:21:33,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:21:33,769 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 46 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:21:33,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 179 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:21:33,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-12-14 08:21:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1509. [2022-12-14 08:21:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1186 states have (on average 1.22681281618887) internal successors, (1455), 1192 states have internal predecessors, (1455), 179 states have call successors, (179), 137 states have call predecessors, (179), 140 states have return successors, (191), 179 states have call predecessors, (191), 179 states have call successors, (191) [2022-12-14 08:21:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1825 transitions. [2022-12-14 08:21:33,960 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1825 transitions. Word has length 114 [2022-12-14 08:21:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:21:33,960 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 1825 transitions. [2022-12-14 08:21:33,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 08:21:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1825 transitions. [2022-12-14 08:21:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 08:21:33,961 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:21:33,961 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:21:33,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 08:21:33,961 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:21:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:21:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1917083747, now seen corresponding path program 1 times [2022-12-14 08:21:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:21:33,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476307573] [2022-12-14 08:21:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:21:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:21:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:21:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 08:21:34,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:21:34,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476307573] [2022-12-14 08:21:34,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476307573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:21:34,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:21:34,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:21:34,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700694527] [2022-12-14 08:21:34,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:21:34,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:21:34,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:21:34,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:21:34,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:21:34,022 INFO L87 Difference]: Start difference. First operand 1509 states and 1825 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:21:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:21:34,361 INFO L93 Difference]: Finished difference Result 2563 states and 3137 transitions. [2022-12-14 08:21:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:21:34,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-12-14 08:21:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:21:34,364 INFO L225 Difference]: With dead ends: 2563 [2022-12-14 08:21:34,364 INFO L226 Difference]: Without dead ends: 1361 [2022-12-14 08:21:34,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:21:34,365 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 68 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:21:34,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 270 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:21:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-12-14 08:21:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1088. [2022-12-14 08:21:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 831 states have (on average 1.2129963898916967) internal successors, (1008), 837 states have internal predecessors, (1008), 145 states have call successors, (145), 105 states have call predecessors, (145), 108 states have return successors, (157), 145 states have call predecessors, (157), 145 states have call successors, (157) [2022-12-14 08:21:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1310 transitions. [2022-12-14 08:21:34,518 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1310 transitions. Word has length 115 [2022-12-14 08:21:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:21:34,518 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1310 transitions. [2022-12-14 08:21:34,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:21:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1310 transitions. [2022-12-14 08:21:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 08:21:34,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:21:34,519 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:21:34,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 08:21:34,519 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:21:34,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:21:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1481688477, now seen corresponding path program 1 times [2022-12-14 08:21:34,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:21:34,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628687871] [2022-12-14 08:21:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:21:34,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:21:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:21:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 08:21:34,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:21:34,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628687871] [2022-12-14 08:21:34,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628687871] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:21:34,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226669599] [2022-12-14 08:21:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:21:34,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:21:34,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:21:34,556 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:21:34,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 08:21:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:21:34,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:21:34,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:21:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-14 08:21:34,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:21:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 08:21:34,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226669599] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:21:34,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [552619204] [2022-12-14 08:21:34,768 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 08:21:34,768 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:21:34,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:21:34,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:21:34,769 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:21:44,885 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 111 for LOIs [2022-12-14 08:21:44,903 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 119 for LOIs [2022-12-14 08:21:44,924 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 119 for LOIs [2022-12-14 08:21:44,949 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 47 for LOIs [2022-12-14 08:21:44,956 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 47 for LOIs [2022-12-14 08:21:45,144 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:21:52,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [552619204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:21:52,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:21:52,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [3, 2, 3] total 51 [2022-12-14 08:21:52,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642413624] [2022-12-14 08:21:52,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:21:52,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 08:21:52,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:21:52,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 08:21:52,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2417, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 08:21:52,049 INFO L87 Difference]: Start difference. First operand 1088 states and 1310 transitions. Second operand has 48 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:22:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:22:11,960 INFO L93 Difference]: Finished difference Result 2514 states and 3099 transitions. [2022-12-14 08:22:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-12-14 08:22:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 117 [2022-12-14 08:22:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:22:11,963 INFO L225 Difference]: With dead ends: 2514 [2022-12-14 08:22:11,963 INFO L226 Difference]: Without dead ends: 1723 [2022-12-14 08:22:11,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 296 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8237 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=1699, Invalid=20353, Unknown=0, NotChecked=0, Total=22052 [2022-12-14 08:22:11,966 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 416 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 4931 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 5067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 4931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:22:11,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1849 Invalid, 5067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 4931 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 08:22:11,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2022-12-14 08:22:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1610. [2022-12-14 08:22:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1233 states have (on average 1.2165450121654502) internal successors, (1500), 1243 states have internal predecessors, (1500), 211 states have call successors, (211), 155 states have call predecessors, (211), 162 states have return successors, (237), 211 states have call predecessors, (237), 211 states have call successors, (237) [2022-12-14 08:22:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1948 transitions. [2022-12-14 08:22:12,216 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1948 transitions. Word has length 117 [2022-12-14 08:22:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:22:12,216 INFO L495 AbstractCegarLoop]: Abstraction has 1610 states and 1948 transitions. [2022-12-14 08:22:12,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:22:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1948 transitions. [2022-12-14 08:22:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-14 08:22:12,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:22:12,217 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:22:12,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 08:22:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:22:12,418 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:22:12,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:22:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash 514753610, now seen corresponding path program 1 times [2022-12-14 08:22:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:22:12,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407169833] [2022-12-14 08:22:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:22:12,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:22:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:22:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 08:22:12,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:22:12,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407169833] [2022-12-14 08:22:12,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407169833] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:22:12,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900382122] [2022-12-14 08:22:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:22:12,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:22:12,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:22:12,458 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:22:12,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 08:22:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:22:12,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:22:12,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:22:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-14 08:22:12,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:22:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 08:22:12,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900382122] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:22:12,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142008290] [2022-12-14 08:22:12,672 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 08:22:12,672 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:22:12,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:22:12,672 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:22:12,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:22:23,549 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 111 for LOIs [2022-12-14 08:22:23,568 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 119 for LOIs [2022-12-14 08:22:23,589 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 119 for LOIs [2022-12-14 08:22:23,615 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 70 for LOIs [2022-12-14 08:22:23,625 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 47 for LOIs [2022-12-14 08:22:23,785 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:22:31,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1142008290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:22:31,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:22:31,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [3, 2, 3] total 51 [2022-12-14 08:22:31,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750399907] [2022-12-14 08:22:31,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:22:31,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 08:22:31,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:22:31,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 08:22:31,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 08:22:31,240 INFO L87 Difference]: Start difference. First operand 1610 states and 1948 transitions. Second operand has 48 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:22:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:22:50,495 INFO L93 Difference]: Finished difference Result 1712 states and 2067 transitions. [2022-12-14 08:22:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 08:22:50,495 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 118 [2022-12-14 08:22:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:22:50,497 INFO L225 Difference]: With dead ends: 1712 [2022-12-14 08:22:50,497 INFO L226 Difference]: Without dead ends: 1711 [2022-12-14 08:22:50,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 294 SyntacticMatches, 11 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7877 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=1675, Invalid=18917, Unknown=0, NotChecked=0, Total=20592 [2022-12-14 08:22:50,499 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 338 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 4460 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 4593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 4460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:22:50,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1671 Invalid, 4593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 4460 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 08:22:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2022-12-14 08:22:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1612. [2022-12-14 08:22:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1235 states have (on average 1.2161943319838058) internal successors, (1502), 1245 states have internal predecessors, (1502), 211 states have call successors, (211), 155 states have call predecessors, (211), 162 states have return successors, (237), 211 states have call predecessors, (237), 211 states have call successors, (237) [2022-12-14 08:22:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 1950 transitions. [2022-12-14 08:22:50,747 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 1950 transitions. Word has length 118 [2022-12-14 08:22:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:22:50,747 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 1950 transitions. [2022-12-14 08:22:50,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:22:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 1950 transitions. [2022-12-14 08:22:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-14 08:22:50,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:22:50,748 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:22:50,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 08:22:50,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-14 08:22:50,950 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:22:50,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:22:50,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1295962042, now seen corresponding path program 1 times [2022-12-14 08:22:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:22:50,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114015852] [2022-12-14 08:22:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:22:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:22:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:22:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 08:22:50,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:22:50,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114015852] [2022-12-14 08:22:50,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114015852] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:22:50,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385211249] [2022-12-14 08:22:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:22:50,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:22:50,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:22:50,988 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:22:50,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 08:22:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:22:51,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:22:51,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:22:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 08:22:51,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:22:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 08:22:51,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385211249] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:22:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1041417760] [2022-12-14 08:22:51,225 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 08:22:51,225 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:22:51,225 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:22:51,225 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:22:51,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:23:15,307 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 65 for LOIs [2022-12-14 08:23:15,313 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 67 for LOIs [2022-12-14 08:23:15,319 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 67 for LOIs [2022-12-14 08:23:15,325 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 66 for LOIs [2022-12-14 08:23:15,333 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 67 for LOIs [2022-12-14 08:23:15,457 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:23:21,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1041417760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:23:21,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:23:21,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [3, 2, 3] total 50 [2022-12-14 08:23:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565863777] [2022-12-14 08:23:21,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:23:21,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-14 08:23:21,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:23:21,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-14 08:23:21,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 08:23:21,914 INFO L87 Difference]: Start difference. First operand 1612 states and 1950 transitions. Second operand has 47 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 41 states have internal predecessors, (62), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:23:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:23:41,334 INFO L93 Difference]: Finished difference Result 2699 states and 3306 transitions. [2022-12-14 08:23:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-12-14 08:23:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 41 states have internal predecessors, (62), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 126 [2022-12-14 08:23:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:23:41,338 INFO L225 Difference]: With dead ends: 2699 [2022-12-14 08:23:41,338 INFO L226 Difference]: Without dead ends: 2191 [2022-12-14 08:23:41,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 304 SyntacticMatches, 26 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7750 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=2158, Invalid=18722, Unknown=0, NotChecked=0, Total=20880 [2022-12-14 08:23:41,340 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 305 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 5702 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 5816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 5702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:23:41,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1819 Invalid, 5816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 5702 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-14 08:23:41,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2022-12-14 08:23:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2008. [2022-12-14 08:23:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1545 states have (on average 1.222653721682848) internal successors, (1889), 1557 states have internal predecessors, (1889), 261 states have call successors, (261), 189 states have call predecessors, (261), 198 states have return successors, (295), 261 states have call predecessors, (295), 261 states have call successors, (295) [2022-12-14 08:23:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2445 transitions. [2022-12-14 08:23:41,686 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2445 transitions. Word has length 126 [2022-12-14 08:23:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:23:41,686 INFO L495 AbstractCegarLoop]: Abstraction has 2008 states and 2445 transitions. [2022-12-14 08:23:41,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 41 states have internal predecessors, (62), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:23:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2445 transitions. [2022-12-14 08:23:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 08:23:41,687 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:23:41,688 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:23:41,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 08:23:41,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-14 08:23:41,888 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:23:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:23:41,888 INFO L85 PathProgramCache]: Analyzing trace with hash -385160201, now seen corresponding path program 1 times [2022-12-14 08:23:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:23:41,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413864536] [2022-12-14 08:23:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:23:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:23:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:23:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-14 08:23:41,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:23:41,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413864536] [2022-12-14 08:23:41,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413864536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:23:41,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:23:41,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:23:41,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109615950] [2022-12-14 08:23:41,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:23:41,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:23:41,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:23:41,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:23:41,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:23:41,921 INFO L87 Difference]: Start difference. First operand 2008 states and 2445 transitions. Second operand has 3 states, 2 states have (on average 35.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 08:23:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:23:42,350 INFO L93 Difference]: Finished difference Result 2008 states and 2445 transitions. [2022-12-14 08:23:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:23:42,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 35.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-12-14 08:23:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:23:42,353 INFO L225 Difference]: With dead ends: 2008 [2022-12-14 08:23:42,353 INFO L226 Difference]: Without dead ends: 2007 [2022-12-14 08:23:42,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:23:42,354 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:23:42,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:23:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-12-14 08:23:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2004. [2022-12-14 08:23:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1542 states have (on average 1.2204928664072634) internal successors, (1882), 1553 states have internal predecessors, (1882), 261 states have call successors, (261), 189 states have call predecessors, (261), 198 states have return successors, (295), 261 states have call predecessors, (295), 261 states have call successors, (295) [2022-12-14 08:23:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2438 transitions. [2022-12-14 08:23:42,732 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2438 transitions. Word has length 133 [2022-12-14 08:23:42,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:23:42,732 INFO L495 AbstractCegarLoop]: Abstraction has 2004 states and 2438 transitions. [2022-12-14 08:23:42,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 35.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 08:23:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2438 transitions. [2022-12-14 08:23:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 08:23:42,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:23:42,734 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:23:42,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-14 08:23:42,734 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:23:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:23:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash -762727473, now seen corresponding path program 1 times [2022-12-14 08:23:42,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:23:42,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461173612] [2022-12-14 08:23:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:23:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:23:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:23:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 08:23:42,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:23:42,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461173612] [2022-12-14 08:23:42,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461173612] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:23:42,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505547910] [2022-12-14 08:23:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:23:42,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:23:42,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:23:42,773 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:23:42,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 08:23:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:23:42,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:23:42,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:23:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 08:23:42,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:23:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 08:23:42,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505547910] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:23:42,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [645361444] [2022-12-14 08:23:42,985 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-12-14 08:23:42,985 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:23:42,985 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:23:42,985 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:23:42,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:24:21,306 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 110 for LOIs [2022-12-14 08:24:21,323 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 118 for LOIs [2022-12-14 08:24:21,343 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 118 for LOIs [2022-12-14 08:24:21,362 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 67 for LOIs [2022-12-14 08:24:21,370 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 45 for LOIs [2022-12-14 08:24:21,514 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:24:28,036 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '271130#(and (= |ULTIMATE.start_read_data_~__retres3~0#1| ~data_0~0) (<= 0 ~data_0~0) (< 2147483646 ~i~0) (<= 0 ~P_1_ev~0) (<= |ULTIMATE.start_eval_~tmp___2~0#1| 1) (= ~e~0 0) (= |ULTIMATE.start_read_data_~i___0#1| 0) (= |ULTIMATE.start_read_data_#in~i___0#1| ~num~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (<= ~data_1~0 65) (= ~C_1_pr~0 0) (= ~max_loop~0 2) (<= ~C_1_ev~0 2) (= ~P_1_i~0 1) (= |ULTIMATE.start_read_data_#res#1| |ULTIMATE.start_read_data_~__retres3~0#1|) (= |ULTIMATE.start_read_data_#res#1| |ULTIMATE.start_C_1_~c~1#1|) (<= 0 ~data_1~0) (<= 0 ~C_1_ev~0) (<= 0 ~P_1_pc~0) (<= ~P_1_ev~0 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_eval_~tmp___2~0#1|) (<= 0 ~C_1_pc~0) (<= |ULTIMATE.start_C_1_~c~1#1| 127) (= |ULTIMATE.start_read_data_#in~i___0#1| |ULTIMATE.start_read_data_~i___0#1|) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_eval_~tmp___1~0#1| 2147483648)) (= ~timer~0 0) (= ~C_1_st~0 1) (= ~C_1_i~0 1) (= |#NULL.base| 0))' at error location [2022-12-14 08:24:28,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:24:28,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:24:28,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 3] total 5 [2022-12-14 08:24:28,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920117514] [2022-12-14 08:24:28,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:24:28,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:24:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:24:28,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:24:28,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2395, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 08:24:28,039 INFO L87 Difference]: Start difference. First operand 2004 states and 2438 transitions. Second operand has 6 states, 5 states have (on average 35.6) internal successors, (178), 6 states have internal predecessors, (178), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-12-14 08:24:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:24:29,308 INFO L93 Difference]: Finished difference Result 5308 states and 6541 transitions. [2022-12-14 08:24:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:24:29,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 35.6) internal successors, (178), 6 states have internal predecessors, (178), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 140 [2022-12-14 08:24:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:24:29,314 INFO L225 Difference]: With dead ends: 5308 [2022-12-14 08:24:29,314 INFO L226 Difference]: Without dead ends: 5306 [2022-12-14 08:24:29,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 351 SyntacticMatches, 20 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=257, Invalid=2395, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 08:24:29,316 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 168 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:24:29,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 330 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:24:29,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2022-12-14 08:24:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4731. [2022-12-14 08:24:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4731 states, 3674 states have (on average 1.238704409363092) internal successors, (4551), 3702 states have internal predecessors, (4551), 601 states have call successors, (601), 427 states have call predecessors, (601), 453 states have return successors, (707), 601 states have call predecessors, (707), 601 states have call successors, (707) [2022-12-14 08:24:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4731 states to 4731 states and 5859 transitions. [2022-12-14 08:24:30,106 INFO L78 Accepts]: Start accepts. Automaton has 4731 states and 5859 transitions. Word has length 140 [2022-12-14 08:24:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:24:30,107 INFO L495 AbstractCegarLoop]: Abstraction has 4731 states and 5859 transitions. [2022-12-14 08:24:30,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 35.6) internal successors, (178), 6 states have internal predecessors, (178), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-12-14 08:24:30,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4731 states and 5859 transitions. [2022-12-14 08:24:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-14 08:24:30,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:24:30,109 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:24:30,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 08:24:30,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-14 08:24:30,310 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:24:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:24:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 587782089, now seen corresponding path program 1 times [2022-12-14 08:24:30,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:24:30,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322928445] [2022-12-14 08:24:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:24:30,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:24:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:24:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 08:24:30,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:24:30,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322928445] [2022-12-14 08:24:30,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322928445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:24:30,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:24:30,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:24:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809067896] [2022-12-14 08:24:30,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:24:30,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:24:30,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:24:30,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:24:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:24:30,390 INFO L87 Difference]: Start difference. First operand 4731 states and 5859 transitions. Second operand has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-14 08:24:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:24:31,249 INFO L93 Difference]: Finished difference Result 4731 states and 5859 transitions. [2022-12-14 08:24:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:24:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 161 [2022-12-14 08:24:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:24:31,255 INFO L225 Difference]: With dead ends: 4731 [2022-12-14 08:24:31,255 INFO L226 Difference]: Without dead ends: 4300 [2022-12-14 08:24:31,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:24:31,257 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:24:31,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 210 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:24:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2022-12-14 08:24:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 3722. [2022-12-14 08:24:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 2882 states have (on average 1.2331714087439278) internal successors, (3554), 2906 states have internal predecessors, (3554), 475 states have call successors, (475), 340 states have call predecessors, (475), 363 states have return successors, (569), 475 states have call predecessors, (569), 475 states have call successors, (569) [2022-12-14 08:24:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 4598 transitions. [2022-12-14 08:24:31,884 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 4598 transitions. Word has length 161 [2022-12-14 08:24:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:24:31,884 INFO L495 AbstractCegarLoop]: Abstraction has 3722 states and 4598 transitions. [2022-12-14 08:24:31,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-14 08:24:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 4598 transitions. [2022-12-14 08:24:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-12-14 08:24:31,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:24:31,889 INFO L195 NwaCegarLoop]: trace histogram [18, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:24:31,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-14 08:24:31,889 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 08:24:31,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:24:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1467658399, now seen corresponding path program 1 times [2022-12-14 08:24:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:24:31,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379269805] [2022-12-14 08:24:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:24:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:24:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:24:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 291 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-12-14 08:24:31,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:24:31,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379269805] [2022-12-14 08:24:31,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379269805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:24:31,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148180823] [2022-12-14 08:24:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:24:31,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:24:31,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:24:31,997 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:24:31,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 08:24:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:24:32,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:24:32,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:24:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 481 proven. 8 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-12-14 08:24:32,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:24:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 218 proven. 6 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2022-12-14 08:24:32,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148180823] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:24:32,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [120597233] [2022-12-14 08:24:32,358 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-12-14 08:24:32,358 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:24:32,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:24:32,359 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:24:32,359 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:25:26,091 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 110 for LOIs [2022-12-14 08:25:26,108 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 118 for LOIs [2022-12-14 08:25:26,128 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 118 for LOIs [2022-12-14 08:25:26,147 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 45 for LOIs [2022-12-14 08:25:26,151 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 45 for LOIs [2022-12-14 08:25:26,292 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:25:33,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [120597233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:25:33,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:25:33,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [6, 4, 5] total 56 [2022-12-14 08:25:33,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375094632] [2022-12-14 08:25:33,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:25:33,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 08:25:33,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:25:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 08:25:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 08:25:33,251 INFO L87 Difference]: Start difference. First operand 3722 states and 4598 transitions. Second operand has 49 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:26:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:26:04,133 INFO L93 Difference]: Finished difference Result 7617 states and 9485 transitions. [2022-12-14 08:26:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-12-14 08:26:04,134 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 317 [2022-12-14 08:26:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:26:04,135 INFO L225 Difference]: With dead ends: 7617 [2022-12-14 08:26:04,135 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 08:26:04,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 850 SyntacticMatches, 53 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13188 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=2795, Invalid=29785, Unknown=0, NotChecked=0, Total=32580 [2022-12-14 08:26:04,143 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 367 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 6137 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 6320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 6137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:26:04,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1617 Invalid, 6320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 6137 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 08:26:04,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 08:26:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 08:26:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-12-14 08:26:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 08:26:04,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 317 [2022-12-14 08:26:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:26:04,144 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 08:26:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 7 states have call successors, (12), 1 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-12-14 08:26:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 08:26:04,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 08:26:04,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-12-14 08:26:04,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-12-14 08:26:04,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-12-14 08:26:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-12-14 08:26:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-12-14 08:26:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-12-14 08:26:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-12-14 08:26:04,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-12-14 08:26:04,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 08:26:04,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f3e4c88-37e0-4de5-bd6f-2a1ca610dd59/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:26:04,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 08:26:47,373 WARN L233 SmtUtils]: Spent 40.73s on a formula simplification. DAG size of input: 312 DAG size of output: 312 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 08:26:55,129 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 366 DAG size of output: 351 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 08:27:14,762 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 464 DAG size of output: 450 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 08:27:22,459 WARN L233 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 440 DAG size of output: 438 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 08:27:33,627 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 358 DAG size of output: 356 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 08:27:41,188 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 375 DAG size of output: 373 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 08:28:05,387 WARN L233 SmtUtils]: Spent 23.38s on a formula simplification. DAG size of input: 416 DAG size of output: 395 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 08:28:19,663 WARN L233 SmtUtils]: Spent 13.55s on a formula simplification. DAG size of input: 349 DAG size of output: 336 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)