./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba --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 167b835a28653099821c6834c1cc6b8e30303efac27d569b21e43e89592d7586 --- 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-b5237d8 [2022-11-22 02:04:29,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:04:29,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:04:29,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:04:29,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:04:29,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:04:29,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:04:29,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:04:29,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:04:29,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:04:29,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:04:29,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:04:29,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:04:29,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:04:29,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:04:29,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:04:29,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:04:29,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:04:29,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:04:29,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:04:29,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:04:29,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:04:29,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:04:29,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:04:29,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:04:29,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:04:29,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:04:29,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:04:29,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:04:29,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:04:29,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:04:29,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:04:29,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:04:29,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:04:29,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:04:29,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:04:29,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:04:29,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:04:29,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:04:29,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:04:29,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:04:29,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 02:04:29,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:04:29,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:04:29,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:04:29,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:04:29,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:04:29,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:04:29,989 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:04:29,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:04:29,989 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:04:29,990 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:04:29,991 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:04:29,991 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:04:29,991 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:04:29,992 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:04:29,992 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:04:29,992 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:04:29,992 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:04:29,992 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:04:29,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:04:29,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:04:29,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:04:29,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:04:29,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:04:29,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:04:29,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:04:29,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:04:29,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:04:29,996 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:04:29,996 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:04:29,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:04:29,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:04:29,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:04:29,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:04:29,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:04:29,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:04:29,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:04:29,999 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:04:30,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:04:30,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:04:30,001 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:04:30,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:04:30,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:04:30,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:04:30,002 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_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 167b835a28653099821c6834c1cc6b8e30303efac27d569b21e43e89592d7586 [2022-11-22 02:04:30,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:04:30,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:04:30,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:04:30,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:04:30,338 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:04:30,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/psyco/psyco_abp_1-2.c [2022-11-22 02:04:33,490 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:04:33,745 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:04:33,746 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/sv-benchmarks/c/psyco/psyco_abp_1-2.c [2022-11-22 02:04:33,758 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/data/8154f1973/2f946866345b47eeaf3363cdb49915b8/FLAGb8a4e2e73 [2022-11-22 02:04:33,773 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/data/8154f1973/2f946866345b47eeaf3363cdb49915b8 [2022-11-22 02:04:33,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:04:33,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:04:33,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:04:33,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:04:33,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:04:33,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:04:33" (1/1) ... [2022-11-22 02:04:33,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1e236d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:33, skipping insertion in model container [2022-11-22 02:04:33,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:04:33" (1/1) ... [2022-11-22 02:04:33,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:04:33,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:04:34,275 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_664523c4-4648-4737-beb9-c9cb85231b31/sv-benchmarks/c/psyco/psyco_abp_1-2.c[24706,24719] [2022-11-22 02:04:34,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:04:34,306 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:04:34,430 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_664523c4-4648-4737-beb9-c9cb85231b31/sv-benchmarks/c/psyco/psyco_abp_1-2.c[24706,24719] [2022-11-22 02:04:34,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:04:34,462 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:04:34,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34 WrapperNode [2022-11-22 02:04:34,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:04:34,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:04:34,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:04:34,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:04:34,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,550 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 467 [2022-11-22 02:04:34,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:04:34,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:04:34,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:04:34,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:04:34,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:04:34,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:04:34,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:04:34,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:04:34,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (1/1) ... [2022-11-22 02:04:34,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:04:34,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:04:34,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:04:34,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:04:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:04:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:04:34,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:04:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:04:34,864 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:04:34,866 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:04:35,954 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:04:35,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:04:35,971 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:04:35,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:04:35 BoogieIcfgContainer [2022-11-22 02:04:35,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:04:35,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:04:35,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:04:35,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:04:35,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:04:33" (1/3) ... [2022-11-22 02:04:35,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d412065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:04:35, skipping insertion in model container [2022-11-22 02:04:35,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:34" (2/3) ... [2022-11-22 02:04:35,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d412065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:04:35, skipping insertion in model container [2022-11-22 02:04:35,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:04:35" (3/3) ... [2022-11-22 02:04:35,985 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-2.c [2022-11-22 02:04:36,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:04:36,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-22 02:04:36,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:04:36,078 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;@67b0f7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:04:36,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-22 02:04:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 149 states have (on average 1.9731543624161074) internal successors, (294), 191 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:04:36,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:36,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:36,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:04:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash 989774804, now seen corresponding path program 1 times [2022-11-22 02:04:36,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:36,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828211522] [2022-11-22 02:04:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:36,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:36,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:36,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828211522] [2022-11-22 02:04:36,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828211522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:36,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:36,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:04:36,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611886385] [2022-11-22 02:04:36,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:36,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:04:36,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:04:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:04:36,432 INFO L87 Difference]: Start difference. First operand has 192 states, 149 states have (on average 1.9731543624161074) internal successors, (294), 191 states have internal predecessors, (294), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:36,592 INFO L93 Difference]: Finished difference Result 386 states and 593 transitions. [2022-11-22 02:04:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:04:36,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2022-11-22 02:04:36,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:36,608 INFO L225 Difference]: With dead ends: 386 [2022-11-22 02:04:36,609 INFO L226 Difference]: Without dead ends: 165 [2022-11-22 02:04:36,612 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 [2022-11-22 02:04:36,616 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 4 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:36,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 527 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:04:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-22 02:04:36,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-22 02:04:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 123 states have (on average 1.6910569105691058) internal successors, (208), 164 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 208 transitions. [2022-11-22 02:04:36,665 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 208 transitions. Word has length 9 [2022-11-22 02:04:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:36,666 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 208 transitions. [2022-11-22 02:04:36,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 208 transitions. [2022-11-22 02:04:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:04:36,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:36,667 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:36,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:04:36,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:04:36,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:36,669 INFO L85 PathProgramCache]: Analyzing trace with hash 995209245, now seen corresponding path program 1 times [2022-11-22 02:04:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:36,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415430830] [2022-11-22 02:04:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:36,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:36,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415430830] [2022-11-22 02:04:36,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415430830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:36,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:36,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:04:36,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351925022] [2022-11-22 02:04:36,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:36,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:04:36,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:04:36,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:04:36,798 INFO L87 Difference]: Start difference. First operand 165 states and 208 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:36,977 INFO L93 Difference]: Finished difference Result 320 states and 406 transitions. [2022-11-22 02:04:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:04:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2022-11-22 02:04:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:36,981 INFO L225 Difference]: With dead ends: 320 [2022-11-22 02:04:36,981 INFO L226 Difference]: Without dead ends: 260 [2022-11-22 02:04:36,982 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 [2022-11-22 02:04:36,983 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 151 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:36,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 323 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:04:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-22 02:04:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 251. [2022-11-22 02:04:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 209 states have (on average 1.6267942583732058) internal successors, (340), 250 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2022-11-22 02:04:37,004 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 14 [2022-11-22 02:04:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:37,005 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2022-11-22 02:04:37,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2022-11-22 02:04:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 02:04:37,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:37,006 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:37,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:04:37,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:04:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1381620001, now seen corresponding path program 1 times [2022-11-22 02:04:37,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:37,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925647484] [2022-11-22 02:04:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:37,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:37,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925647484] [2022-11-22 02:04:37,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925647484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:37,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:37,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:04:37,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549546508] [2022-11-22 02:04:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:04:37,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:04:37,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:04:37,106 INFO L87 Difference]: Start difference. First operand 251 states and 340 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:37,172 INFO L93 Difference]: Finished difference Result 354 states and 486 transitions. [2022-11-22 02:04:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:04:37,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 16 [2022-11-22 02:04:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:37,175 INFO L225 Difference]: With dead ends: 354 [2022-11-22 02:04:37,175 INFO L226 Difference]: Without dead ends: 346 [2022-11-22 02:04:37,176 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 [2022-11-22 02:04:37,177 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 123 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:37,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 378 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:04:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-22 02:04:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 341. [2022-11-22 02:04:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 299 states have (on average 1.5785953177257526) internal successors, (472), 340 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 472 transitions. [2022-11-22 02:04:37,197 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 472 transitions. Word has length 16 [2022-11-22 02:04:37,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:37,197 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 472 transitions. [2022-11-22 02:04:37,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 472 transitions. [2022-11-22 02:04:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 02:04:37,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:37,199 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:37,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:04:37,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:04:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash -201360900, now seen corresponding path program 1 times [2022-11-22 02:04:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101246068] [2022-11-22 02:04:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:04:37,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:37,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101246068] [2022-11-22 02:04:37,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101246068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:37,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:37,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:04:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870512588] [2022-11-22 02:04:37,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:04:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:04:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:04:37,382 INFO L87 Difference]: Start difference. First operand 341 states and 472 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:37,422 INFO L93 Difference]: Finished difference Result 695 states and 969 transitions. [2022-11-22 02:04:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:04:37,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) Word has length 24 [2022-11-22 02:04:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:37,425 INFO L225 Difference]: With dead ends: 695 [2022-11-22 02:04:37,425 INFO L226 Difference]: Without dead ends: 356 [2022-11-22 02:04:37,426 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 [2022-11-22 02:04:37,428 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 39 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:37,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 351 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:04:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-22 02:04:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2022-11-22 02:04:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 314 states have (on average 1.5509554140127388) internal successors, (487), 355 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 487 transitions. [2022-11-22 02:04:37,446 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 487 transitions. Word has length 24 [2022-11-22 02:04:37,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:37,446 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 487 transitions. [2022-11-22 02:04:37,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 487 transitions. [2022-11-22 02:04:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 02:04:37,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:37,449 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:04:37,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:04:37,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2144880393, now seen corresponding path program 1 times [2022-11-22 02:04:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:37,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294463710] [2022-11-22 02:04:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:37,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:37,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:37,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294463710] [2022-11-22 02:04:37,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294463710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:04:37,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288557419] [2022-11-22 02:04:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:37,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:04:37,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:04:37,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:04:37,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:04:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:37,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:04:37,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:04:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:37,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:04:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:37,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288557419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:04:37,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [200861528] [2022-11-22 02:04:37,928 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-22 02:04:37,929 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:04:37,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:04:37,944 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:04:37,945 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:04:39,929 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:04:47,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [200861528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:47,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:04:47,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [3, 3, 3] total 27 [2022-11-22 02:04:47,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747961230] [2022-11-22 02:04:47,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:47,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 02:04:47,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:47,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 02:04:47,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2022-11-22 02:04:47,121 INFO L87 Difference]: Start difference. First operand 356 states and 487 transitions. Second operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:53,574 INFO L93 Difference]: Finished difference Result 762 states and 1048 transitions. [2022-11-22 02:04:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 02:04:53,575 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) Word has length 27 [2022-11-22 02:04:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:53,577 INFO L225 Difference]: With dead ends: 762 [2022-11-22 02:04:53,577 INFO L226 Difference]: Without dead ends: 404 [2022-11-22 02:04:53,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 02:04:53,580 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 231 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:53,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 922 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 02:04:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-22 02:04:53,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 401. [2022-11-22 02:04:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 359 states have (on average 1.5264623955431755) internal successors, (548), 400 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 548 transitions. [2022-11-22 02:04:53,596 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 548 transitions. Word has length 27 [2022-11-22 02:04:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:53,597 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 548 transitions. [2022-11-22 02:04:53,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 548 transitions. [2022-11-22 02:04:53,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 02:04:53,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:53,598 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:04:53,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:04:53,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:04:53,806 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:04:53,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2066781395, now seen corresponding path program 1 times [2022-11-22 02:04:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:53,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178410701] [2022-11-22 02:04:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:04:53,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:53,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178410701] [2022-11-22 02:04:53,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178410701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:53,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:53,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:04:53,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889498933] [2022-11-22 02:04:53,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:53,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:04:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:04:53,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:04:53,896 INFO L87 Difference]: Start difference. First operand 401 states and 548 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:53,914 INFO L93 Difference]: Finished difference Result 758 states and 1036 transitions. [2022-11-22 02:04:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:04:53,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) Word has length 28 [2022-11-22 02:04:53,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:53,917 INFO L225 Difference]: With dead ends: 758 [2022-11-22 02:04:53,917 INFO L226 Difference]: Without dead ends: 401 [2022-11-22 02:04:53,918 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 [2022-11-22 02:04:53,919 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:53,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 403 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:04:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-22 02:04:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-11-22 02:04:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 359 states have (on average 1.5153203342618384) internal successors, (544), 400 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2022-11-22 02:04:53,932 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 544 transitions. Word has length 28 [2022-11-22 02:04:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:53,933 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 544 transitions. [2022-11-22 02:04:53,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:04:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 544 transitions. [2022-11-22 02:04:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 02:04:53,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:53,942 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-22 02:04:53,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:04:53,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:04:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1903641239, now seen corresponding path program 1 times [2022-11-22 02:04:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:53,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281074769] [2022-11-22 02:04:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:53,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:54,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:54,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281074769] [2022-11-22 02:04:54,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281074769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:04:54,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773146498] [2022-11-22 02:04:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:54,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:04:54,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:04:54,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:04:54,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:04:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:54,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:04:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:04:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:54,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:04:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:54,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773146498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:04:54,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1776771193] [2022-11-22 02:04:54,247 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-22 02:04:54,247 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:04:54,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:04:54,248 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:04:54,248 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:04:56,087 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:05:02,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1776771193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:02,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:05:02,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [3, 3, 3] total 28 [2022-11-22 02:05:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482793854] [2022-11-22 02:05:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:02,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 02:05:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 02:05:02,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2022-11-22 02:05:02,123 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:05,261 INFO L93 Difference]: Finished difference Result 407 states and 550 transitions. [2022-11-22 02:05:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:05:05,262 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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) Word has length 30 [2022-11-22 02:05:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:05,264 INFO L225 Difference]: With dead ends: 407 [2022-11-22 02:05:05,264 INFO L226 Difference]: Without dead ends: 405 [2022-11-22 02:05:05,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 02:05:05,265 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 155 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:05,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 827 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 02:05:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-11-22 02:05:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 404. [2022-11-22 02:05:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 362 states have (on average 1.511049723756906) internal successors, (547), 403 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 547 transitions. [2022-11-22 02:05:05,278 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 547 transitions. Word has length 30 [2022-11-22 02:05:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:05,279 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 547 transitions. [2022-11-22 02:05:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 547 transitions. [2022-11-22 02:05:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-22 02:05:05,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:05,280 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:05:05,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:05:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:05:05,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash 575939136, now seen corresponding path program 1 times [2022-11-22 02:05:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:05,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196427226] [2022-11-22 02:05:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:05:05,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:05,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196427226] [2022-11-22 02:05:05,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196427226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:05,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:05,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:05:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378344310] [2022-11-22 02:05:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:05,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:05:05,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:05,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:05:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:05:05,586 INFO L87 Difference]: Start difference. First operand 404 states and 547 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:05,638 INFO L93 Difference]: Finished difference Result 782 states and 1071 transitions. [2022-11-22 02:05:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:05:05,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) Word has length 38 [2022-11-22 02:05:05,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:05,643 INFO L225 Difference]: With dead ends: 782 [2022-11-22 02:05:05,643 INFO L226 Difference]: Without dead ends: 428 [2022-11-22 02:05:05,646 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 [2022-11-22 02:05:05,648 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 82 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:05,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 310 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:05:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-22 02:05:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2022-11-22 02:05:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 386 states have (on average 1.494818652849741) internal successors, (577), 427 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 577 transitions. [2022-11-22 02:05:05,666 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 577 transitions. Word has length 38 [2022-11-22 02:05:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:05,667 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 577 transitions. [2022-11-22 02:05:05,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 577 transitions. [2022-11-22 02:05:05,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-22 02:05:05,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:05,672 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-22 02:05:05,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:05:05,673 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:05,675 INFO L85 PathProgramCache]: Analyzing trace with hash -677359335, now seen corresponding path program 1 times [2022-11-22 02:05:05,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:05,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976134121] [2022-11-22 02:05:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:05,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:05:05,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:05,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976134121] [2022-11-22 02:05:05,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976134121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:05,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:05,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:05:05,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001293554] [2022-11-22 02:05:05,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:05,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:05:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:05:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:05:05,796 INFO L87 Difference]: Start difference. First operand 428 states and 577 transitions. Second operand has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:05,901 INFO L93 Difference]: Finished difference Result 557 states and 763 transitions. [2022-11-22 02:05:05,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:05:05,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 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) Word has length 41 [2022-11-22 02:05:05,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:05,904 INFO L225 Difference]: With dead ends: 557 [2022-11-22 02:05:05,904 INFO L226 Difference]: Without dead ends: 542 [2022-11-22 02:05:05,904 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 [2022-11-22 02:05:05,905 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 162 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:05,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 322 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:05:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-22 02:05:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 529. [2022-11-22 02:05:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 487 states have (on average 1.51129363449692) internal successors, (736), 528 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 736 transitions. [2022-11-22 02:05:05,922 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 736 transitions. Word has length 41 [2022-11-22 02:05:05,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:05,922 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 736 transitions. [2022-11-22 02:05:05,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 736 transitions. [2022-11-22 02:05:05,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-22 02:05:05,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:05,923 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-22 02:05:05,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:05:05,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:05,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:05,924 INFO L85 PathProgramCache]: Analyzing trace with hash 476697526, now seen corresponding path program 1 times [2022-11-22 02:05:05,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:05,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368052383] [2022-11-22 02:05:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:05,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:05:06,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:06,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368052383] [2022-11-22 02:05:06,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368052383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:06,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:06,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:05:06,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100816141] [2022-11-22 02:05:06,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:06,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:05:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:06,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:05:06,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:05:06,005 INFO L87 Difference]: Start difference. First operand 529 states and 736 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:06,074 INFO L93 Difference]: Finished difference Result 529 states and 736 transitions. [2022-11-22 02:05:06,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:05:06,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 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) Word has length 42 [2022-11-22 02:05:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:06,076 INFO L225 Difference]: With dead ends: 529 [2022-11-22 02:05:06,077 INFO L226 Difference]: Without dead ends: 486 [2022-11-22 02:05:06,077 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 [2022-11-22 02:05:06,078 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:06,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 144 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:05:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-22 02:05:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 484. [2022-11-22 02:05:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 459 states have (on average 1.477124183006536) internal successors, (678), 483 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 678 transitions. [2022-11-22 02:05:06,094 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 678 transitions. Word has length 42 [2022-11-22 02:05:06,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:06,094 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 678 transitions. [2022-11-22 02:05:06,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 678 transitions. [2022-11-22 02:05:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-22 02:05:06,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:06,096 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-22 02:05:06,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:05:06,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash -970345499, now seen corresponding path program 1 times [2022-11-22 02:05:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:06,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235908552] [2022-11-22 02:05:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:06,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:05:06,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:06,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235908552] [2022-11-22 02:05:06,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235908552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:05:06,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072222898] [2022-11-22 02:05:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:06,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:05:06,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:05:06,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:05:06,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:05:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:06,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:05:06,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:05:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:05:06,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:05:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:05:06,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072222898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:05:06,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1117470217] [2022-11-22 02:05:06,471 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-11-22 02:05:06,471 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:05:06,473 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:05:06,473 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:05:06,473 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:05:08,336 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:05:15,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1117470217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:15,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:05:15,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [3, 3, 3] total 34 [2022-11-22 02:05:15,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140795018] [2022-11-22 02:05:15,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:15,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-22 02:05:15,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:15,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-22 02:05:15,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:05:15,283 INFO L87 Difference]: Start difference. First operand 484 states and 678 transitions. Second operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:18,919 INFO L93 Difference]: Finished difference Result 940 states and 1322 transitions. [2022-11-22 02:05:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 02:05:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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) Word has length 44 [2022-11-22 02:05:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:18,925 INFO L225 Difference]: With dead ends: 940 [2022-11-22 02:05:18,925 INFO L226 Difference]: Without dead ends: 506 [2022-11-22 02:05:18,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 02:05:18,928 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 198 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:18,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 916 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 02:05:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-22 02:05:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 502. [2022-11-22 02:05:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 477 states have (on average 1.4737945492662474) internal successors, (703), 501 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 703 transitions. [2022-11-22 02:05:18,949 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 703 transitions. Word has length 44 [2022-11-22 02:05:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:18,950 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 703 transitions. [2022-11-22 02:05:18,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 703 transitions. [2022-11-22 02:05:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 02:05:18,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:18,951 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-22 02:05:18,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:05:19,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 02:05:19,159 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash -494106265, now seen corresponding path program 1 times [2022-11-22 02:05:19,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:19,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38275663] [2022-11-22 02:05:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:19,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:05:19,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:19,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38275663] [2022-11-22 02:05:19,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38275663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:05:19,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223621258] [2022-11-22 02:05:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:19,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:05:19,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:05:19,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:05:19,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:05:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:19,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:05:19,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:05:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:05:19,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:05:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:05:19,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223621258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:05:19,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1305459960] [2022-11-22 02:05:19,488 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-22 02:05:19,489 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:05:19,489 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:05:19,489 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:05:19,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:05:21,470 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:05:29,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1305459960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:29,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:05:29,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 3, 3] total 35 [2022-11-22 02:05:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113234042] [2022-11-22 02:05:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:29,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-22 02:05:29,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-22 02:05:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=995, Unknown=0, NotChecked=0, Total=1260 [2022-11-22 02:05:29,149 INFO L87 Difference]: Start difference. First operand 502 states and 703 transitions. Second operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:32,571 INFO L93 Difference]: Finished difference Result 510 states and 711 transitions. [2022-11-22 02:05:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-22 02:05:32,577 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 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) Word has length 46 [2022-11-22 02:05:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:32,579 INFO L225 Difference]: With dead ends: 510 [2022-11-22 02:05:32,579 INFO L226 Difference]: Without dead ends: 508 [2022-11-22 02:05:32,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 02:05:32,580 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 179 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:32,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 808 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 02:05:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-22 02:05:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 502. [2022-11-22 02:05:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 477 states have (on average 1.4737945492662474) internal successors, (703), 501 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 703 transitions. [2022-11-22 02:05:32,598 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 703 transitions. Word has length 46 [2022-11-22 02:05:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:32,599 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 703 transitions. [2022-11-22 02:05:32,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:32,599 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 703 transitions. [2022-11-22 02:05:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 02:05:32,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:32,600 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2022-11-22 02:05:32,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:05:32,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 02:05:32,813 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 359111259, now seen corresponding path program 1 times [2022-11-22 02:05:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:32,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923070983] [2022-11-22 02:05:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-22 02:05:32,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923070983] [2022-11-22 02:05:32,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923070983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:32,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:32,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:05:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558147234] [2022-11-22 02:05:32,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:32,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:05:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:05:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:05:32,880 INFO L87 Difference]: Start difference. First operand 502 states and 703 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:32,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:32,936 INFO L93 Difference]: Finished difference Result 968 states and 1356 transitions. [2022-11-22 02:05:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:05:32,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) Word has length 57 [2022-11-22 02:05:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:32,939 INFO L225 Difference]: With dead ends: 968 [2022-11-22 02:05:32,939 INFO L226 Difference]: Without dead ends: 534 [2022-11-22 02:05:32,940 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 [2022-11-22 02:05:32,941 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 35 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:32,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 293 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:05:32,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-22 02:05:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-11-22 02:05:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 509 states have (on average 1.4518664047151277) internal successors, (739), 533 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 739 transitions. [2022-11-22 02:05:32,962 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 739 transitions. Word has length 57 [2022-11-22 02:05:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:32,963 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 739 transitions. [2022-11-22 02:05:32,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 739 transitions. [2022-11-22 02:05:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-22 02:05:32,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:32,964 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2022-11-22 02:05:32,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:05:32,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1579395880, now seen corresponding path program 1 times [2022-11-22 02:05:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740668578] [2022-11-22 02:05:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-22 02:05:33,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:33,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740668578] [2022-11-22 02:05:33,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740668578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:33,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:33,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:05:33,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633684503] [2022-11-22 02:05:33,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:33,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:05:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:05:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:05:33,105 INFO L87 Difference]: Start difference. First operand 534 states and 739 transitions. Second operand has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:33,171 INFO L93 Difference]: Finished difference Result 545 states and 747 transitions. [2022-11-22 02:05:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:05:33,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 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) Word has length 58 [2022-11-22 02:05:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:33,174 INFO L225 Difference]: With dead ends: 545 [2022-11-22 02:05:33,174 INFO L226 Difference]: Without dead ends: 517 [2022-11-22 02:05:33,175 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 [2022-11-22 02:05:33,175 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 297 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:33,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 382 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:05:33,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-22 02:05:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 410. [2022-11-22 02:05:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 400 states have (on average 1.4225) internal successors, (569), 409 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 569 transitions. [2022-11-22 02:05:33,199 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 569 transitions. Word has length 58 [2022-11-22 02:05:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:33,200 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 569 transitions. [2022-11-22 02:05:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 569 transitions. [2022-11-22 02:05:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 02:05:33,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:33,202 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2022-11-22 02:05:33,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:05:33,202 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:33,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1244844813, now seen corresponding path program 1 times [2022-11-22 02:05:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:33,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146569485] [2022-11-22 02:05:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:33,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-22 02:05:33,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:33,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146569485] [2022-11-22 02:05:33,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146569485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:33,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:33,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:05:33,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997767564] [2022-11-22 02:05:33,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:33,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:05:33,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:33,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:05:33,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:05:33,289 INFO L87 Difference]: Start difference. First operand 410 states and 569 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:33,309 INFO L93 Difference]: Finished difference Result 755 states and 1051 transitions. [2022-11-22 02:05:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:05:33,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) Word has length 64 [2022-11-22 02:05:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:33,311 INFO L225 Difference]: With dead ends: 755 [2022-11-22 02:05:33,311 INFO L226 Difference]: Without dead ends: 410 [2022-11-22 02:05:33,314 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 [2022-11-22 02:05:33,315 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:33,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:05:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-22 02:05:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-11-22 02:05:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 400 states have (on average 1.415) internal successors, (566), 409 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 566 transitions. [2022-11-22 02:05:33,334 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 566 transitions. Word has length 64 [2022-11-22 02:05:33,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:33,334 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 566 transitions. [2022-11-22 02:05:33,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 566 transitions. [2022-11-22 02:05:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 02:05:33,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:33,336 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2022-11-22 02:05:33,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:05:33,336 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1998389231, now seen corresponding path program 1 times [2022-11-22 02:05:33,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:33,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541919142] [2022-11-22 02:05:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:33,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:05:33,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:33,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541919142] [2022-11-22 02:05:33,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541919142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:05:33,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591694520] [2022-11-22 02:05:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:33,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:05:33,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:05:33,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:05:33,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:05:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:33,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:05:33,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:05:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:05:33,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:05:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:05:33,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591694520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:05:33,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [264931031] [2022-11-22 02:05:33,836 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2022-11-22 02:05:33,836 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:05:33,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:05:33,836 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:05:33,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:05:36,662 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:05:47,896 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17728#(and (<= 0 (+ |ULTIMATE.start_main_~P6~0#1| 2147483648)) (<= |ULTIMATE.start_main_~this_expect~0#1| 2147483648) (<= 0 (+ |ULTIMATE.start_main_~P5~0#1| 2147483648)) (= 6 ~m_recv_ack_1_1~0) (= 2 ~m_msg_2~0) (= ~m_msg_1_1~0 4) (= 7 ~m_recv_ack_1_2~0) (or (= |ULTIMATE.start_main_~P9~0#1| (ite (and (< |ULTIMATE.start_main_~this_expect~0#1| 1) (not (= 0 (mod (+ |ULTIMATE.start_main_~this_expect~0#1| 1) 2)))) (+ (- 2) (mod (+ |ULTIMATE.start_main_~this_expect~0#1| 1) 2)) (mod (+ |ULTIMATE.start_main_~this_expect~0#1| 1) 2))) (not (= |ULTIMATE.start_main_~P9~0#1| 1))) (<= |ULTIMATE.start_main_~P3~0#1| 2147483647) (= ~m_msg_1_2~0 5) (<= |ULTIMATE.start_main_~P2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P9~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~this_expect~0#1|) (= ~m_Protocol~0 1) (= 7 |ULTIMATE.start_main_~method_id~0#1|) (< (+ |ULTIMATE.start_main_~this_buffer_empty~0#1| 2147483646) 0) (<= |ULTIMATE.start_main_~P9~0#1| 2147483647) (= |ULTIMATE.start_main_~q~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~P2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P4~0#1| 2147483647) (<= |ULTIMATE.start_main_~P5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P7~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P3~0#1| 2147483648)) (= |ULTIMATE.start_main_~P1~0#1| 1) (= 3 ~m_recv_ack_2~0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~P4~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P7~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P6~0#1| 2147483647) (<= |ULTIMATE.start_main_~P8~0#1| 2147483647) (= |#NULL.base| 0))' at error location [2022-11-22 02:05:47,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:05:47,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:05:47,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2022-11-22 02:05:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000942720] [2022-11-22 02:05:47,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:05:47,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:05:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:05:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=2869, Unknown=0, NotChecked=0, Total=3192 [2022-11-22 02:05:47,899 INFO L87 Difference]: Start difference. First operand 410 states and 566 transitions. Second operand has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:48,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:48,002 INFO L93 Difference]: Finished difference Result 420 states and 577 transitions. [2022-11-22 02:05:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:05:48,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 7 states have internal predecessors, (125), 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) Word has length 66 [2022-11-22 02:05:48,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:48,005 INFO L225 Difference]: With dead ends: 420 [2022-11-22 02:05:48,005 INFO L226 Difference]: Without dead ends: 412 [2022-11-22 02:05:48,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=338, Invalid=2968, Unknown=0, NotChecked=0, Total=3306 [2022-11-22 02:05:48,007 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 502 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:48,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 340 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:05:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-22 02:05:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 291. [2022-11-22 02:05:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 289 states have (on average 1.3840830449826989) internal successors, (400), 290 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 400 transitions. [2022-11-22 02:05:48,025 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 400 transitions. Word has length 66 [2022-11-22 02:05:48,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:48,025 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 400 transitions. [2022-11-22 02:05:48,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:05:48,025 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 400 transitions. [2022-11-22 02:05:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 02:05:48,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:48,027 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 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] [2022-11-22 02:05:48,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:05:48,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 02:05:48,239 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:05:48,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1492301004, now seen corresponding path program 1 times [2022-11-22 02:05:48,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:48,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860241090] [2022-11-22 02:05:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:05:48,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:48,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860241090] [2022-11-22 02:05:48,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860241090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:05:48,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300880194] [2022-11-22 02:05:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:48,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:05:48,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:05:48,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:05:48,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:05:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:48,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:05:48,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:05:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:05:48,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:05:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:05:48,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300880194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:05:48,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [584022940] [2022-11-22 02:05:48,792 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-22 02:05:48,792 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:05:48,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:05:48,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:05:48,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:05:56,503 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:06:13,636 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18987#(and (<= 0 (+ |ULTIMATE.start_main_~P6~0#1| 2147483648)) (<= |ULTIMATE.start_main_~this_expect~0#1| 2147483648) (<= 0 (+ |ULTIMATE.start_main_~P5~0#1| 2147483648)) (= 6 ~m_recv_ack_1_1~0) (= 2 ~m_msg_2~0) (= ~m_msg_1_1~0 4) (= 7 ~m_recv_ack_1_2~0) (<= |ULTIMATE.start_main_~P3~0#1| 2147483647) (= ~m_msg_1_2~0 5) (<= |ULTIMATE.start_main_~P2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P9~0#1| 2147483648)) (= ~m_Protocol~0 1) (= 3 |ULTIMATE.start_main_~q~0#1|) (<= 0 (+ |ULTIMATE.start_main_~P1~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P9~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P4~0#1| 2147483647) (<= |ULTIMATE.start_main_~P5~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P7~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P3~0#1| 2147483648)) (= 3 ~m_recv_ack_2~0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~P4~0#1| 2147483648)) (= 2 |ULTIMATE.start_main_~method_id~0#1|) (< 2147483646 |ULTIMATE.start_main_~this_expect~0#1|) (<= |ULTIMATE.start_main_~P7~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P1~0#1| 2147483647) (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1) (<= |ULTIMATE.start_main_~P6~0#1| 2147483647) (<= |ULTIMATE.start_main_~P8~0#1| 2147483647) (= |#NULL.base| 0))' at error location [2022-11-22 02:06:13,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:06:13,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:06:13,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-22 02:06:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464909712] [2022-11-22 02:06:13,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:06:13,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:06:13,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:06:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:06:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=3207, Unknown=0, NotChecked=0, Total=3540 [2022-11-22 02:06:13,640 INFO L87 Difference]: Start difference. First operand 291 states and 400 transitions. Second operand has 9 states, 8 states have (on average 17.375) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:13,871 INFO L93 Difference]: Finished difference Result 880 states and 1218 transitions. [2022-11-22 02:06:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:06:13,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 17.375) internal successors, (139), 9 states have internal predecessors, (139), 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) Word has length 74 [2022-11-22 02:06:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:13,876 INFO L225 Difference]: With dead ends: 880 [2022-11-22 02:06:13,876 INFO L226 Difference]: Without dead ends: 878 [2022-11-22 02:06:13,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=333, Invalid=3207, Unknown=0, NotChecked=0, Total=3540 [2022-11-22 02:06:13,879 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1347 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:13,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1015 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:06:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-22 02:06:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 846. [2022-11-22 02:06:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 844 states have (on average 1.386255924170616) internal successors, (1170), 845 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1170 transitions. [2022-11-22 02:06:13,913 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1170 transitions. Word has length 74 [2022-11-22 02:06:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:13,914 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1170 transitions. [2022-11-22 02:06:13,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 17.375) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1170 transitions. [2022-11-22 02:06:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-22 02:06:13,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:13,919 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 9, 9, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:13,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:14,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 02:06:14,132 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:06:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash 302032042, now seen corresponding path program 2 times [2022-11-22 02:06:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:06:14,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224939019] [2022-11-22 02:06:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:14,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:06:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 26 proven. 429 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:06:14,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:06:14,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224939019] [2022-11-22 02:06:14,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224939019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:06:14,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591397887] [2022-11-22 02:06:14,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:06:14,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:14,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:06:14,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:06:14,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:06:15,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 02:06:15,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:06:15,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:06:15,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-22 02:06:15,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:06:15,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591397887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:15,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:06:15,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-22 02:06:15,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114350180] [2022-11-22 02:06:15,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:15,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:06:15,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:06:15,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:06:15,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:06:15,153 INFO L87 Difference]: Start difference. First operand 846 states and 1170 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:15,363 INFO L93 Difference]: Finished difference Result 866 states and 1191 transitions. [2022-11-22 02:06:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:06:15,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 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) Word has length 194 [2022-11-22 02:06:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:15,367 INFO L225 Difference]: With dead ends: 866 [2022-11-22 02:06:15,368 INFO L226 Difference]: Without dead ends: 865 [2022-11-22 02:06:15,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:06:15,369 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 242 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:15,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 597 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:06:15,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-11-22 02:06:15,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 843. [2022-11-22 02:06:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 1.3859857482185274) internal successors, (1167), 842 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:15,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1167 transitions. [2022-11-22 02:06:15,406 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1167 transitions. Word has length 194 [2022-11-22 02:06:15,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:15,407 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1167 transitions. [2022-11-22 02:06:15,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:15,407 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1167 transitions. [2022-11-22 02:06:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-22 02:06:15,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:15,411 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 10, 10, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:15,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:15,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 02:06:15,617 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:06:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash 373374671, now seen corresponding path program 1 times [2022-11-22 02:06:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:06:15,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496786168] [2022-11-22 02:06:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:06:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2022-11-22 02:06:15,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:06:15,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496786168] [2022-11-22 02:06:15,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496786168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:15,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:06:15,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:06:15,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959972328] [2022-11-22 02:06:15,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:15,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:06:15,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:06:15,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:06:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:06:15,812 INFO L87 Difference]: Start difference. First operand 843 states and 1167 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:15,848 INFO L93 Difference]: Finished difference Result 1263 states and 1736 transitions. [2022-11-22 02:06:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:06:15,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) Word has length 200 [2022-11-22 02:06:15,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:15,851 INFO L225 Difference]: With dead ends: 1263 [2022-11-22 02:06:15,851 INFO L226 Difference]: Without dead ends: 488 [2022-11-22 02:06:15,854 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 [2022-11-22 02:06:15,855 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 20 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:15,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 194 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:06:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-22 02:06:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 442. [2022-11-22 02:06:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.3333333333333333) internal successors, (588), 441 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 588 transitions. [2022-11-22 02:06:15,878 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 588 transitions. Word has length 200 [2022-11-22 02:06:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:15,879 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 588 transitions. [2022-11-22 02:06:15,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 588 transitions. [2022-11-22 02:06:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-22 02:06:15,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:15,883 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:06:15,883 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:06:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2136153396, now seen corresponding path program 2 times [2022-11-22 02:06:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:06:15,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635662900] [2022-11-22 02:06:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:15,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:06:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-22 02:06:16,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:06:16,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635662900] [2022-11-22 02:06:16,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635662900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:16,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:06:16,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:06:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043359531] [2022-11-22 02:06:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:06:16,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:06:16,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:06:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:06:16,069 INFO L87 Difference]: Start difference. First operand 442 states and 588 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:16,105 INFO L93 Difference]: Finished difference Result 647 states and 861 transitions. [2022-11-22 02:06:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:06:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) Word has length 208 [2022-11-22 02:06:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:16,108 INFO L225 Difference]: With dead ends: 647 [2022-11-22 02:06:16,108 INFO L226 Difference]: Without dead ends: 347 [2022-11-22 02:06:16,109 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 [2022-11-22 02:06:16,110 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 20 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:16,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 194 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:06:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-22 02:06:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2022-11-22 02:06:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.3179190751445087) internal successors, (456), 346 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 456 transitions. [2022-11-22 02:06:16,131 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 456 transitions. Word has length 208 [2022-11-22 02:06:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:16,132 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 456 transitions. [2022-11-22 02:06:16,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 456 transitions. [2022-11-22 02:06:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-22 02:06:16,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:16,135 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 11, 11, 7, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:16,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 02:06:16,136 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:06:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1687424078, now seen corresponding path program 3 times [2022-11-22 02:06:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:06:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150242399] [2022-11-22 02:06:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:06:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 30 proven. 606 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-22 02:06:16,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:06:16,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150242399] [2022-11-22 02:06:16,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150242399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:06:16,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782127642] [2022-11-22 02:06:16,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:06:16,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:16,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:06:16,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:06:16,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:06:17,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:06:17,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:06:17,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 02:06:17,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 30 proven. 606 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-22 02:06:17,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 30 proven. 606 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-22 02:06:18,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782127642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:18,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1486399917] [2022-11-22 02:06:18,072 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-22 02:06:18,072 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:06:18,073 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:06:18,073 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:06:18,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:06:29,524 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:06:41,326 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27542#(and (<= 0 (+ |ULTIMATE.start_main_~P6~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P5~0#1| 2147483648)) (= 6 ~m_recv_ack_1_1~0) (= 2 ~m_msg_2~0) (= ~m_msg_1_1~0 4) (= (ite (and (< |ULTIMATE.start_main_~P1~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P1~0#1| 2) 0))) (+ (mod |ULTIMATE.start_main_~P1~0#1| 2) (- 2)) (mod |ULTIMATE.start_main_~P1~0#1| 2)) 1) (= 7 ~m_recv_ack_1_2~0) (<= |ULTIMATE.start_main_~P3~0#1| 2147483647) (<= |ULTIMATE.start_main_~this_expect~0#1| 2147483647) (= ~m_msg_1_2~0 5) (<= |ULTIMATE.start_main_~P2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P9~0#1| 2147483648)) (= ~m_Protocol~0 1) (or (not (= (ite (and (< |ULTIMATE.start_main_~P6~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P6~0#1| 2) 0))) (+ (- 2) (mod |ULTIMATE.start_main_~P6~0#1| 2)) (mod |ULTIMATE.start_main_~P6~0#1| 2)) 1)) (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1)) (<= |ULTIMATE.start_main_~P9~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P4~0#1| 2147483647) (<= |ULTIMATE.start_main_~P5~0#1| 2147483647) (= 5 |ULTIMATE.start_main_~q~0#1|) (<= 0 (+ |ULTIMATE.start_main_~P7~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P3~0#1| 2147483648)) (= 3 ~m_recv_ack_2~0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~P4~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_main_~this_expect~0#1|) (= 5 |ULTIMATE.start_main_~method_id~0#1|) (<= |ULTIMATE.start_main_~P7~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P1~0#1| 2147483647) (<= |ULTIMATE.start_main_~P6~0#1| 2147483647) (<= |ULTIMATE.start_main_~P8~0#1| 2147483647) (= |#NULL.base| 0))' at error location [2022-11-22 02:06:41,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:06:41,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:06:41,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-22 02:06:41,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138931124] [2022-11-22 02:06:41,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:06:41,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 02:06:41,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:06:41,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 02:06:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=4063, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 02:06:41,330 INFO L87 Difference]: Start difference. First operand 347 states and 456 transitions. Second operand has 19 states, 18 states have (on average 22.61111111111111) internal successors, (407), 19 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:41,600 INFO L93 Difference]: Finished difference Result 808 states and 1066 transitions. [2022-11-22 02:06:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 02:06:41,601 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 22.61111111111111) internal successors, (407), 19 states have internal predecessors, (407), 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) Word has length 224 [2022-11-22 02:06:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:41,604 INFO L225 Difference]: With dead ends: 808 [2022-11-22 02:06:41,604 INFO L226 Difference]: Without dead ends: 807 [2022-11-22 02:06:41,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=493, Invalid=4063, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 02:06:41,607 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1774 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:41,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1774 Valid, 1485 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:06:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-11-22 02:06:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2022-11-22 02:06:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 806 states have (on average 1.316377171215881) internal successors, (1061), 806 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1061 transitions. [2022-11-22 02:06:41,636 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1061 transitions. Word has length 224 [2022-11-22 02:06:41,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:41,636 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 1061 transitions. [2022-11-22 02:06:41,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 22.61111111111111) internal successors, (407), 19 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:06:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1061 transitions. [2022-11-22 02:06:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2022-11-22 02:06:41,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:41,648 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 26, 26, 17, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:41,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:41,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:41,855 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:06:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:41,856 INFO L85 PathProgramCache]: Analyzing trace with hash -296515235, now seen corresponding path program 4 times [2022-11-22 02:06:41,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:06:41,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942555916] [2022-11-22 02:06:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:41,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:06:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 70 proven. 3806 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-22 02:06:45,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:06:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942555916] [2022-11-22 02:06:45,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942555916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:06:45,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854479463] [2022-11-22 02:06:45,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:06:45,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:45,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:06:45,135 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:06:45,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:06:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:45,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-22 02:06:45,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 70 proven. 3806 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-22 02:06:46,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3945 backedges. 70 proven. 3806 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-22 02:06:47,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854479463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:47,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793684244] [2022-11-22 02:06:47,423 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-22 02:06:47,423 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:06:47,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:06:47,424 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:06:47,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:06:56,484 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:07:09,506 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32473#(and (<= 0 (+ |ULTIMATE.start_main_~P6~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P5~0#1| 2147483648)) (= 6 ~m_recv_ack_1_1~0) (= 2 ~m_msg_2~0) (= ~m_msg_1_1~0 4) (= (ite (and (< |ULTIMATE.start_main_~P1~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P1~0#1| 2) 0))) (+ (mod |ULTIMATE.start_main_~P1~0#1| 2) (- 2)) (mod |ULTIMATE.start_main_~P1~0#1| 2)) 1) (= 7 ~m_recv_ack_1_2~0) (<= |ULTIMATE.start_main_~P3~0#1| 2147483647) (<= |ULTIMATE.start_main_~this_expect~0#1| 2147483647) (= ~m_msg_1_2~0 5) (<= |ULTIMATE.start_main_~P2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P9~0#1| 2147483648)) (= ~m_Protocol~0 1) (or (not (= (ite (and (< |ULTIMATE.start_main_~P6~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P6~0#1| 2) 0))) (+ (- 2) (mod |ULTIMATE.start_main_~P6~0#1| 2)) (mod |ULTIMATE.start_main_~P6~0#1| 2)) 1)) (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1)) (<= |ULTIMATE.start_main_~P9~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P4~0#1| 2147483647) (<= |ULTIMATE.start_main_~P5~0#1| 2147483647) (= 5 |ULTIMATE.start_main_~q~0#1|) (<= 0 (+ |ULTIMATE.start_main_~P7~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P3~0#1| 2147483648)) (= 3 ~m_recv_ack_2~0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~P4~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_main_~this_expect~0#1|) (= 5 |ULTIMATE.start_main_~method_id~0#1|) (<= |ULTIMATE.start_main_~P7~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P1~0#1| 2147483647) (<= |ULTIMATE.start_main_~P6~0#1| 2147483647) (<= |ULTIMATE.start_main_~P8~0#1| 2147483647) (= |#NULL.base| 0))' at error location [2022-11-22 02:07:09,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:07:09,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:07:09,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-11-22 02:07:09,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980263346] [2022-11-22 02:07:09,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:07:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-22 02:07:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:07:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-22 02:07:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=6340, Unknown=0, NotChecked=0, Total=7482 [2022-11-22 02:07:09,512 INFO L87 Difference]: Start difference. First operand 807 states and 1061 transitions. Second operand has 39 states, 38 states have (on average 24.92105263157895) internal successors, (947), 39 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:07:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:10,311 INFO L93 Difference]: Finished difference Result 1728 states and 2281 transitions. [2022-11-22 02:07:10,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-22 02:07:10,316 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 24.92105263157895) internal successors, (947), 39 states have internal predecessors, (947), 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) Word has length 524 [2022-11-22 02:07:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:10,323 INFO L225 Difference]: With dead ends: 1728 [2022-11-22 02:07:10,323 INFO L226 Difference]: Without dead ends: 1727 [2022-11-22 02:07:10,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1606 GetRequests, 1511 SyntacticMatches, 10 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4257 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1142, Invalid=6340, Unknown=0, NotChecked=0, Total=7482 [2022-11-22 02:07:10,327 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 5188 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5188 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:10,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5188 Valid, 2795 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:07:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2022-11-22 02:07:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1727. [2022-11-22 02:07:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.3157589803012746) internal successors, (2271), 1726 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:07:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2271 transitions. [2022-11-22 02:07:10,382 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2271 transitions. Word has length 524 [2022-11-22 02:07:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:10,383 INFO L495 AbstractCegarLoop]: Abstraction has 1727 states and 2271 transitions. [2022-11-22 02:07:10,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 24.92105263157895) internal successors, (947), 39 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:07:10,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2271 transitions. [2022-11-22 02:07:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2022-11-22 02:07:10,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:10,433 INFO L195 NwaCegarLoop]: trace histogram [76, 75, 56, 56, 37, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:07:10,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 02:07:10,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-22 02:07:10,642 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:07:10,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:10,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1967167283, now seen corresponding path program 5 times [2022-11-22 02:07:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:10,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873642041] [2022-11-22 02:07:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18755 backedges. 150 proven. 18456 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-22 02:07:22,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:07:22,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873642041] [2022-11-22 02:07:22,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873642041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:07:22,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787455286] [2022-11-22 02:07:22,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:07:22,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:07:22,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:07:22,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:07:22,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 02:07:24,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2022-11-22 02:07:24,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:07:24,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 5343 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-22 02:07:24,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:07:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18755 backedges. 150 proven. 18456 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-22 02:07:26,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:07:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 18755 backedges. 150 proven. 18456 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-22 02:07:30,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787455286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:07:30,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2010183539] [2022-11-22 02:07:30,306 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-22 02:07:30,306 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:07:30,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:07:30,307 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:07:30,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:07:35,433 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:07:50,062 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42983#(and (<= 0 (+ |ULTIMATE.start_main_~P6~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P5~0#1| 2147483648)) (= 6 ~m_recv_ack_1_1~0) (= 2 ~m_msg_2~0) (= ~m_msg_1_1~0 4) (= (ite (and (< |ULTIMATE.start_main_~P1~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P1~0#1| 2) 0))) (+ (mod |ULTIMATE.start_main_~P1~0#1| 2) (- 2)) (mod |ULTIMATE.start_main_~P1~0#1| 2)) 1) (= 7 ~m_recv_ack_1_2~0) (<= |ULTIMATE.start_main_~P3~0#1| 2147483647) (= ~m_msg_1_2~0 5) (<= |ULTIMATE.start_main_~P2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P9~0#1| 2147483648)) (= ~m_Protocol~0 1) (or (not (= (ite (and (< |ULTIMATE.start_main_~P6~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P6~0#1| 2) 0))) (+ (- 2) (mod |ULTIMATE.start_main_~P6~0#1| 2)) (mod |ULTIMATE.start_main_~P6~0#1| 2)) 1)) (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1)) (or (not (= (ite (and (< |ULTIMATE.start_main_~P6~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P6~0#1| 2) 0))) (+ (- 2) (mod |ULTIMATE.start_main_~P6~0#1| 2)) (mod |ULTIMATE.start_main_~P6~0#1| 2)) 1)) (= (ite (and (< |ULTIMATE.start_main_~P6~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P6~0#1| 2) 0))) (+ (- 2) (mod |ULTIMATE.start_main_~P6~0#1| 2)) (mod |ULTIMATE.start_main_~P6~0#1| 2)) (ite (and (not (= (mod |ULTIMATE.start_main_~this_expect~0#1| 2) 0)) (< |ULTIMATE.start_main_~this_expect~0#1| 0)) (+ (- 2) (mod |ULTIMATE.start_main_~this_expect~0#1| 2)) (mod |ULTIMATE.start_main_~this_expect~0#1| 2)))) (<= |ULTIMATE.start_main_~P9~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~this_buffer_empty~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P4~0#1| 2147483647) (<= |ULTIMATE.start_main_~P5~0#1| 2147483647) (= 5 |ULTIMATE.start_main_~q~0#1|) (<= 0 (+ |ULTIMATE.start_main_~P7~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P3~0#1| 2147483648)) (= 3 ~m_recv_ack_2~0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~P4~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_main_~this_expect~0#1|) (= 5 |ULTIMATE.start_main_~method_id~0#1|) (<= |ULTIMATE.start_main_~P7~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P1~0#1| 2147483647) (<= |ULTIMATE.start_main_~P6~0#1| 2147483647) (<= |ULTIMATE.start_main_~P8~0#1| 2147483647) (= |#NULL.base| 0))' at error location [2022-11-22 02:07:50,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:07:50,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:07:50,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 78 [2022-11-22 02:07:50,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148962799] [2022-11-22 02:07:50,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:07:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-22 02:07:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:07:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-22 02:07:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3663, Invalid=13107, Unknown=0, NotChecked=0, Total=16770 [2022-11-22 02:07:50,072 INFO L87 Difference]: Start difference. First operand 1727 states and 2271 transitions. Second operand has 79 states, 78 states have (on average 25.987179487179485) internal successors, (2027), 79 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:07:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:54,253 INFO L93 Difference]: Finished difference Result 3568 states and 4711 transitions. [2022-11-22 02:07:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-22 02:07:54,254 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 25.987179487179485) internal successors, (2027), 79 states have internal predecessors, (2027), 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) Word has length 1124 [2022-11-22 02:07:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:54,264 INFO L225 Difference]: With dead ends: 3568 [2022-11-22 02:07:54,265 INFO L226 Difference]: Without dead ends: 3567 [2022-11-22 02:07:54,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3446 GetRequests, 3317 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7167 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=3663, Invalid=13107, Unknown=0, NotChecked=0, Total=16770 [2022-11-22 02:07:54,269 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 15941 mSDsluCounter, 5821 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15941 SdHoareTripleChecker+Valid, 5925 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:54,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15941 Valid, 5925 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:07:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2022-11-22 02:07:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3567. [2022-11-22 02:07:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3567 states, 3566 states have (on average 1.3154795288839036) internal successors, (4691), 3566 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:07:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3567 states to 3567 states and 4691 transitions. [2022-11-22 02:07:54,376 INFO L78 Accepts]: Start accepts. Automaton has 3567 states and 4691 transitions. Word has length 1124 [2022-11-22 02:07:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:54,378 INFO L495 AbstractCegarLoop]: Abstraction has 3567 states and 4691 transitions. [2022-11-22 02:07:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 25.987179487179485) internal successors, (2027), 79 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:07:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3567 states and 4691 transitions. [2022-11-22 02:07:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2325 [2022-11-22 02:07:54,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:54,426 INFO L195 NwaCegarLoop]: trace histogram [156, 155, 116, 116, 77, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:07:54,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 02:07:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-22 02:07:54,639 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:07:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 630668511, now seen corresponding path program 6 times [2022-11-22 02:07:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170473126] [2022-11-22 02:07:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 81375 backedges. 310 proven. 80756 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-22 02:08:54,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:08:54,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170473126] [2022-11-22 02:08:54,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170473126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:08:54,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881291681] [2022-11-22 02:08:54,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:08:54,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:08:54,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:08:54,857 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:08:54,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 02:08:57,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:08:57,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:08:57,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 10963 conjuncts, 156 conjunts are in the unsatisfiable core [2022-11-22 02:08:57,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:09:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 81375 backedges. 310 proven. 80756 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-22 02:09:00,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:09:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 81375 backedges. 310 proven. 80756 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-22 02:09:11,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881291681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:09:11,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [192659196] [2022-11-22 02:09:11,648 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-22 02:09:11,648 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:09:11,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:09:11,649 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:09:11,649 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:09:21,533 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:09:57,738 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '64656#(and (<= 0 (+ |ULTIMATE.start_main_~P6~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P5~0#1| 2147483648)) (= 6 ~m_recv_ack_1_1~0) (= 2 ~m_msg_2~0) (= ~m_msg_1_1~0 4) (= (ite (and (< |ULTIMATE.start_main_~P1~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P1~0#1| 2) 0))) (+ (mod |ULTIMATE.start_main_~P1~0#1| 2) (- 2)) (mod |ULTIMATE.start_main_~P1~0#1| 2)) 1) (= 7 ~m_recv_ack_1_2~0) (<= |ULTIMATE.start_main_~P3~0#1| 2147483647) (<= |ULTIMATE.start_main_~this_expect~0#1| 2147483647) (= ~m_msg_1_2~0 5) (<= |ULTIMATE.start_main_~P2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P9~0#1| 2147483648)) (= ~m_Protocol~0 1) (or (not (= (ite (and (< |ULTIMATE.start_main_~P6~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P6~0#1| 2) 0))) (+ (- 2) (mod |ULTIMATE.start_main_~P6~0#1| 2)) (mod |ULTIMATE.start_main_~P6~0#1| 2)) 1)) (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1)) (<= |ULTIMATE.start_main_~P9~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~this_buffer_empty~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P4~0#1| 2147483647) (<= |ULTIMATE.start_main_~P5~0#1| 2147483647) (= 5 |ULTIMATE.start_main_~q~0#1|) (<= 0 (+ |ULTIMATE.start_main_~P7~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P3~0#1| 2147483648)) (= 3 ~m_recv_ack_2~0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~P4~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_main_~this_expect~0#1|) (= 5 |ULTIMATE.start_main_~method_id~0#1|) (<= |ULTIMATE.start_main_~P7~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P1~0#1| 2147483647) (<= |ULTIMATE.start_main_~P6~0#1| 2147483647) (<= |ULTIMATE.start_main_~P8~0#1| 2147483647) (= |#NULL.base| 0))' at error location [2022-11-22 02:09:57,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:09:57,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:09:57,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 158 [2022-11-22 02:09:57,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596110390] [2022-11-22 02:09:57,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:09:57,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2022-11-22 02:09:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:57,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2022-11-22 02:09:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13436, Invalid=29206, Unknown=0, NotChecked=0, Total=42642 [2022-11-22 02:09:57,754 INFO L87 Difference]: Start difference. First operand 3567 states and 4691 transitions. Second operand has 159 states, 158 states have (on average 26.5) internal successors, (4187), 159 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:10:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:10:32,242 INFO L93 Difference]: Finished difference Result 7248 states and 9571 transitions. [2022-11-22 02:10:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-11-22 02:10:32,245 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 158 states have (on average 26.5) internal successors, (4187), 159 states have internal predecessors, (4187), 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) Word has length 2324 [2022-11-22 02:10:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:10:32,267 INFO L225 Difference]: With dead ends: 7248 [2022-11-22 02:10:32,267 INFO L226 Difference]: Without dead ends: 7247 [2022-11-22 02:10:32,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7126 GetRequests, 6881 SyntacticMatches, 40 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22447 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=13436, Invalid=29206, Unknown=0, NotChecked=0, Total=42642 [2022-11-22 02:10:32,273 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 29045 mSDsluCounter, 11615 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 1048 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29045 SdHoareTripleChecker+Valid, 11719 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1048 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:10:32,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29045 Valid, 11719 Invalid, 2468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1048 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 02:10:32,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7247 states. [2022-11-22 02:10:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7247 to 7247. [2022-11-22 02:10:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 7246 states have (on average 1.3153463980126967) internal successors, (9531), 7246 states have internal predecessors, (9531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:10:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 9531 transitions. [2022-11-22 02:10:32,450 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 9531 transitions. Word has length 2324 [2022-11-22 02:10:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:10:32,453 INFO L495 AbstractCegarLoop]: Abstraction has 7247 states and 9531 transitions. [2022-11-22 02:10:32,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 158 states have (on average 26.5) internal successors, (4187), 159 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:10:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 9531 transitions. [2022-11-22 02:10:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4725 [2022-11-22 02:10:32,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:10:32,623 INFO L195 NwaCegarLoop]: trace histogram [316, 315, 236, 236, 157, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:10:32,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 02:10:32,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-22 02:10:32,839 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-22 02:10:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:10:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1465823287, now seen corresponding path program 7 times [2022-11-22 02:10:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:10:32,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414886335] [2022-11-22 02:10:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:10:32,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:10:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 338615 backedges. 630 proven. 337356 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2022-11-22 02:16:21,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:21,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414886335] [2022-11-22 02:16:21,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414886335] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:16:21,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73363913] [2022-11-22 02:16:21,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:16:21,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:16:21,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:16:21,974 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:16:21,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_664523c4-4648-4737-beb9-c9cb85231b31/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 02:16:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:25,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 22203 conjuncts, 316 conjunts are in the unsatisfiable core [2022-11-22 02:16:26,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:16:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 338615 backedges. 630 proven. 337356 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2022-11-22 02:16:34,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:17:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 338615 backedges. 630 proven. 337356 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2022-11-22 02:17:16,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73363913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:17:16,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1364872065] [2022-11-22 02:17:16,521 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-22 02:17:16,522 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:17:16,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:17:16,522 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:17:16,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:17:25,162 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:18:25,668 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '108646#(and (<= 0 (+ |ULTIMATE.start_main_~P6~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P5~0#1| 2147483648)) (= 6 ~m_recv_ack_1_1~0) (= 2 ~m_msg_2~0) (= ~m_msg_1_1~0 4) (= (ite (and (< |ULTIMATE.start_main_~P1~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P1~0#1| 2) 0))) (+ (mod |ULTIMATE.start_main_~P1~0#1| 2) (- 2)) (mod |ULTIMATE.start_main_~P1~0#1| 2)) 1) (= 7 ~m_recv_ack_1_2~0) (<= |ULTIMATE.start_main_~P3~0#1| 2147483647) (<= |ULTIMATE.start_main_~this_expect~0#1| 2147483647) (= ~m_msg_1_2~0 5) (<= |ULTIMATE.start_main_~P2~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P9~0#1| 2147483648)) (= ~m_Protocol~0 1) (or (not (= (ite (and (< |ULTIMATE.start_main_~P6~0#1| 0) (not (= (mod |ULTIMATE.start_main_~P6~0#1| 2) 0))) (+ (- 2) (mod |ULTIMATE.start_main_~P6~0#1| 2)) (mod |ULTIMATE.start_main_~P6~0#1| 2)) 1)) (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1)) (<= |ULTIMATE.start_main_~P9~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~P2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P4~0#1| 2147483647) (<= |ULTIMATE.start_main_~P5~0#1| 2147483647) (= 5 |ULTIMATE.start_main_~q~0#1|) (<= 0 (+ |ULTIMATE.start_main_~P7~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~P3~0#1| 2147483648)) (= 3 ~m_recv_ack_2~0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~P4~0#1| 2147483648)) (< 2147483646 |ULTIMATE.start_main_~this_expect~0#1|) (= 5 |ULTIMATE.start_main_~method_id~0#1|) (<= |ULTIMATE.start_main_~P7~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648)) (<= |ULTIMATE.start_main_~P1~0#1| 2147483647) (<= |ULTIMATE.start_main_~P6~0#1| 2147483647) (<= |ULTIMATE.start_main_~P8~0#1| 2147483647) (= |#NULL.base| 0))' at error location [2022-11-22 02:18:25,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:18:25,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:18:25,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159, 159] total 318 [2022-11-22 02:18:25,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161929649] [2022-11-22 02:18:25,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:18:25,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 319 states [2022-11-22 02:18:25,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:25,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 319 interpolants. [2022-11-22 02:18:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52242, Invalid=82080, Unknown=0, NotChecked=0, Total=134322 [2022-11-22 02:18:25,693 INFO L87 Difference]: Start difference. First operand 7247 states and 9531 transitions. Second operand has 319 states, 318 states have (on average 26.751572327044027) internal successors, (8507), 319 states have internal predecessors, (8507), 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)