./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur --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 9c0fb6a0d32b99c9a776859d2bc15d9177dc584955a2c1baa8ac133e976f40f7 --- 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-38b53e6 [2022-11-25 22:30:07,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:30:07,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:30:07,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:30:07,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:30:07,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:30:07,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:30:07,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:30:07,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:30:07,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:30:07,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:30:07,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:30:07,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:30:07,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:30:07,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:30:07,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:30:07,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:30:07,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:30:07,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:30:07,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:30:07,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:30:07,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:30:07,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:30:07,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:30:07,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:30:07,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:30:07,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:30:07,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:30:07,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:30:07,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:30:07,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:30:07,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:30:07,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:30:07,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:30:07,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:30:07,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:30:07,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:30:07,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:30:07,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:30:07,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:30:07,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:30:07,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 22:30:07,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:30:07,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:30:07,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:30:07,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:30:07,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:30:07,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:30:07,618 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:30:07,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:30:07,619 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:30:07,619 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:30:07,620 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:30:07,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:30:07,621 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:30:07,621 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:30:07,622 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:30:07,622 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:30:07,622 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:30:07,622 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:30:07,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:30:07,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:30:07,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:30:07,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:30:07,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:30:07,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:30:07,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:30:07,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:30:07,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:30:07,626 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:30:07,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:30:07,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:30:07,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:30:07,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:30:07,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:30:07,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:30:07,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:30:07,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:30:07,629 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:30:07,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:30:07,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:30:07,630 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:30:07,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:30:07,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:30:07,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:30:07,632 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_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0fb6a0d32b99c9a776859d2bc15d9177dc584955a2c1baa8ac133e976f40f7 [2022-11-25 22:30:07,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:30:07,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:30:07,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:30:07,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:30:07,999 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:30:08,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2022-11-25 22:30:11,629 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:30:11,879 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:30:11,880 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2022-11-25 22:30:11,888 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/data/00feeb8de/e7951cded5224a5992a81cd59118fa0c/FLAG1b2d7dafe [2022-11-25 22:30:11,913 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/data/00feeb8de/e7951cded5224a5992a81cd59118fa0c [2022-11-25 22:30:11,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:30:11,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:30:11,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:30:11,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:30:11,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:30:11,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:30:11" (1/1) ... [2022-11-25 22:30:11,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cdd286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:11, skipping insertion in model container [2022-11-25 22:30:11,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:30:11" (1/1) ... [2022-11-25 22:30:11,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:30:11,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:30:12,165 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_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c[548,561] [2022-11-25 22:30:12,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:30:12,187 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:30:12,212 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_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c[548,561] [2022-11-25 22:30:12,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:30:12,230 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:30:12,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12 WrapperNode [2022-11-25 22:30:12,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:30:12,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:30:12,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:30:12,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:30:12,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,275 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-25 22:30:12,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:30:12,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:30:12,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:30:12,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:30:12,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:30:12,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:30:12,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:30:12,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:30:12,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (1/1) ... [2022-11-25 22:30:12,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:30:12,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:12,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:30:12,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:30:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:30:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:30:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2022-11-25 22:30:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2022-11-25 22:30:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:30:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:30:12,431 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-11-25 22:30:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-11-25 22:30:12,522 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:30:12,525 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:30:12,685 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:30:12,711 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:30:12,712 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:30:12,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:30:12 BoogieIcfgContainer [2022-11-25 22:30:12,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:30:12,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:30:12,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:30:12,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:30:12,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:30:11" (1/3) ... [2022-11-25 22:30:12,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a30410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:30:12, skipping insertion in model container [2022-11-25 22:30:12,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:12" (2/3) ... [2022-11-25 22:30:12,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a30410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:30:12, skipping insertion in model container [2022-11-25 22:30:12,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:30:12" (3/3) ... [2022-11-25 22:30:12,726 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2022-11-25 22:30:12,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:30:12,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 22:30:12,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:30:12,824 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;@1409e23a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:30:12,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-25 22:30:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:30:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:30:12,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:12,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 22:30:12,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash 79989956, now seen corresponding path program 1 times [2022-11-25 22:30:12,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:12,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512158984] [2022-11-25 22:30:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:13,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:13,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512158984] [2022-11-25 22:30:13,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512158984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:13,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:13,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570130777] [2022-11-25 22:30:13,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:13,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:30:13,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:30:13,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:30:13,264 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:13,386 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2022-11-25 22:30:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:30:13,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 22:30:13,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:13,399 INFO L225 Difference]: With dead ends: 50 [2022-11-25 22:30:13,399 INFO L226 Difference]: Without dead ends: 41 [2022-11-25 22:30:13,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:30:13,407 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:13,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 101 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:13,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-25 22:30:13,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-11-25 22:30:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:30:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2022-11-25 22:30:13,458 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 5 [2022-11-25 22:30:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:13,459 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2022-11-25 22:30:13,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2022-11-25 22:30:13,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 22:30:13,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:13,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 22:30:13,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:30:13,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:13,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:13,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1815278591, now seen corresponding path program 1 times [2022-11-25 22:30:13,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:13,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502891956] [2022-11-25 22:30:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:13,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:13,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:13,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502891956] [2022-11-25 22:30:13,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502891956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:13,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:13,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63373180] [2022-11-25 22:30:13,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:13,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:30:13,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:13,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:30:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:30:13,631 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:13,745 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2022-11-25 22:30:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:30:13,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 22:30:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:13,749 INFO L225 Difference]: With dead ends: 43 [2022-11-25 22:30:13,750 INFO L226 Difference]: Without dead ends: 42 [2022-11-25 22:30:13,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:30:13,754 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 14 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:13,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 103 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-25 22:30:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-11-25 22:30:13,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:30:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-25 22:30:13,777 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 6 [2022-11-25 22:30:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:13,777 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-25 22:30:13,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-25 22:30:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:30:13,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:13,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:13,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:30:13,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1902482832, now seen corresponding path program 1 times [2022-11-25 22:30:13,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:13,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109740293] [2022-11-25 22:30:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:13,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:13,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:13,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109740293] [2022-11-25 22:30:13,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109740293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:13,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:13,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:30:13,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622637954] [2022-11-25 22:30:13,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:13,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:30:13,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:30:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:30:13,970 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:14,125 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2022-11-25 22:30:14,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:30:14,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 22:30:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:14,128 INFO L225 Difference]: With dead ends: 61 [2022-11-25 22:30:14,128 INFO L226 Difference]: Without dead ends: 53 [2022-11-25 22:30:14,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:30:14,130 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:14,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 123 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:14,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-25 22:30:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2022-11-25 22:30:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.4375) internal successors, (46), 39 states have internal predecessors, (46), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 22:30:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-11-25 22:30:14,143 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 10 [2022-11-25 22:30:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:14,144 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-11-25 22:30:14,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:14,145 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-11-25 22:30:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:30:14,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:14,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:14,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:30:14,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1152574390, now seen corresponding path program 1 times [2022-11-25 22:30:14,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:14,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970072957] [2022-11-25 22:30:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:14,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:14,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970072957] [2022-11-25 22:30:14,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970072957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:14,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:14,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:30:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437669585] [2022-11-25 22:30:14,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:14,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:30:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:30:14,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:30:14,281 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:14,378 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-11-25 22:30:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:30:14,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 22:30:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:14,380 INFO L225 Difference]: With dead ends: 48 [2022-11-25 22:30:14,381 INFO L226 Difference]: Without dead ends: 46 [2022-11-25 22:30:14,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:30:14,382 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 41 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:14,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 51 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-25 22:30:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-25 22:30:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.34375) internal successors, (43), 37 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 22:30:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-25 22:30:14,394 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 11 [2022-11-25 22:30:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:14,395 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-25 22:30:14,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-25 22:30:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 22:30:14,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:14,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:30:14,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash 615646824, now seen corresponding path program 1 times [2022-11-25 22:30:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:14,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529426167] [2022-11-25 22:30:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:14,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:14,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529426167] [2022-11-25 22:30:14,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529426167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:14,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33056360] [2022-11-25 22:30:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:14,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:14,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:14,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:14,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:30:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:14,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:30:14,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:14,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:14,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33056360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:14,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1775142903] [2022-11-25 22:30:15,014 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:30:15,015 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:15,022 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:30:15,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:15,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-25 22:30:15,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454642273] [2022-11-25 22:30:15,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:15,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 22:30:15,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:15,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 22:30:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:30:15,045 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 16 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:15,376 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2022-11-25 22:30:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 22:30:15,377 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-25 22:30:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:15,379 INFO L225 Difference]: With dead ends: 108 [2022-11-25 22:30:15,379 INFO L226 Difference]: Without dead ends: 92 [2022-11-25 22:30:15,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-11-25 22:30:15,381 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 141 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:15,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 172 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:30:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-25 22:30:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2022-11-25 22:30:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 61 states have internal predecessors, (75), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 22:30:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2022-11-25 22:30:15,397 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 15 [2022-11-25 22:30:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:15,397 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2022-11-25 22:30:15,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 9 states have internal predecessors, (24), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2022-11-25 22:30:15,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 22:30:15,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:15,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:15,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:15,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:15,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:15,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash 448467390, now seen corresponding path program 1 times [2022-11-25 22:30:15,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:15,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212474747] [2022-11-25 22:30:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:15,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 22:30:15,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:15,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212474747] [2022-11-25 22:30:15,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212474747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:15,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:15,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:15,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834671681] [2022-11-25 22:30:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:15,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:15,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:15,707 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:30:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:15,736 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2022-11-25 22:30:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:30:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-25 22:30:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:15,739 INFO L225 Difference]: With dead ends: 91 [2022-11-25 22:30:15,739 INFO L226 Difference]: Without dead ends: 89 [2022-11-25 22:30:15,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:15,741 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:15,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 73 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-25 22:30:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-25 22:30:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 71 states have internal predecessors, (86), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-25 22:30:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2022-11-25 22:30:15,766 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 23 [2022-11-25 22:30:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:15,767 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2022-11-25 22:30:15,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:30:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2022-11-25 22:30:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 22:30:15,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:15,771 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:15,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:30:15,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1199375590, now seen corresponding path program 1 times [2022-11-25 22:30:15,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:15,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920040127] [2022-11-25 22:30:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:15,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 22:30:15,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:15,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920040127] [2022-11-25 22:30:15,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920040127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:15,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:15,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:15,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929794240] [2022-11-25 22:30:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:15,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:15,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:15,910 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:30:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:15,939 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2022-11-25 22:30:15,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:30:15,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-25 22:30:15,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:15,941 INFO L225 Difference]: With dead ends: 101 [2022-11-25 22:30:15,941 INFO L226 Difference]: Without dead ends: 99 [2022-11-25 22:30:15,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:15,943 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:15,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-25 22:30:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-25 22:30:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 79 states have internal predecessors, (94), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (12), 12 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-25 22:30:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2022-11-25 22:30:15,957 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 28 [2022-11-25 22:30:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:15,958 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2022-11-25 22:30:15,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:30:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2022-11-25 22:30:15,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 22:30:15,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:15,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:15,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:30:15,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1392185903, now seen corresponding path program 1 times [2022-11-25 22:30:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:15,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260692319] [2022-11-25 22:30:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 22:30:16,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:16,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260692319] [2022-11-25 22:30:16,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260692319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:16,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:16,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:30:16,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283826409] [2022-11-25 22:30:16,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:16,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:16,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:16,006 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:16,019 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2022-11-25 22:30:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:16,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-25 22:30:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:16,022 INFO L225 Difference]: With dead ends: 99 [2022-11-25 22:30:16,022 INFO L226 Difference]: Without dead ends: 98 [2022-11-25 22:30:16,022 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 [2022-11-25 22:30:16,023 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 49 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 [2022-11-25 22:30:16,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 49 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-25 22:30:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-25 22:30:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 78 states have internal predecessors, (91), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (12), 12 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-25 22:30:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2022-11-25 22:30:16,050 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 28 [2022-11-25 22:30:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:16,052 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2022-11-25 22:30:16,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2022-11-25 22:30:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 22:30:16,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:16,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2022-11-25 22:30:16,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 22:30:16,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:16,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:16,057 INFO L85 PathProgramCache]: Analyzing trace with hash -925966040, now seen corresponding path program 1 times [2022-11-25 22:30:16,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:16,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735898138] [2022-11-25 22:30:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:16,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:16,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:16,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735898138] [2022-11-25 22:30:16,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735898138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:16,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64702826] [2022-11-25 22:30:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:16,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:16,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:16,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:16,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:30:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:16,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:30:16,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:16,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:16,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64702826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:16,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [625111957] [2022-11-25 22:30:16,971 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:30:16,976 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:16,976 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:30:16,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:16,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-11-25 22:30:16,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282645797] [2022-11-25 22:30:16,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:16,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 22:30:16,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 22:30:16,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-11-25 22:30:16,984 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 28 states, 25 states have (on average 1.92) internal successors, (48), 15 states have internal predecessors, (48), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:17,795 INFO L93 Difference]: Finished difference Result 241 states and 259 transitions. [2022-11-25 22:30:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-25 22:30:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.92) internal successors, (48), 15 states have internal predecessors, (48), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-25 22:30:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:17,802 INFO L225 Difference]: With dead ends: 241 [2022-11-25 22:30:17,802 INFO L226 Difference]: Without dead ends: 211 [2022-11-25 22:30:17,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-11-25 22:30:17,807 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 285 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:17,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 414 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:30:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-25 22:30:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 193. [2022-11-25 22:30:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 151 states have (on average 1.205298013245033) internal successors, (182), 154 states have internal predecessors, (182), 15 states have call successors, (15), 14 states have call predecessors, (15), 22 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-25 22:30:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 221 transitions. [2022-11-25 22:30:17,861 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 221 transitions. Word has length 30 [2022-11-25 22:30:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:17,862 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 221 transitions. [2022-11-25 22:30:17,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.92) internal successors, (48), 15 states have internal predecessors, (48), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 221 transitions. [2022-11-25 22:30:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 22:30:17,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:17,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:17,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 22:30:18,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:18,070 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting id2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:18,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:18,071 INFO L85 PathProgramCache]: Analyzing trace with hash -539190753, now seen corresponding path program 1 times [2022-11-25 22:30:18,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:18,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873094009] [2022-11-25 22:30:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:18,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:30:18,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:18,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873094009] [2022-11-25 22:30:18,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873094009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:18,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:18,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:30:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807530573] [2022-11-25 22:30:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:30:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:30:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:30:18,171 INFO L87 Difference]: Start difference. First operand 193 states and 221 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:18,228 INFO L93 Difference]: Finished difference Result 222 states and 256 transitions. [2022-11-25 22:30:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:30:18,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-11-25 22:30:18,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:18,232 INFO L225 Difference]: With dead ends: 222 [2022-11-25 22:30:18,232 INFO L226 Difference]: Without dead ends: 221 [2022-11-25 22:30:18,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:30:18,234 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:18,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-25 22:30:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 198. [2022-11-25 22:30:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 155 states have (on average 1.2) internal successors, (186), 158 states have internal predecessors, (186), 15 states have call successors, (15), 14 states have call predecessors, (15), 23 states have return successors, (25), 25 states have call predecessors, (25), 14 states have call successors, (25) [2022-11-25 22:30:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2022-11-25 22:30:18,251 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 39 [2022-11-25 22:30:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:18,252 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2022-11-25 22:30:18,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2022-11-25 22:30:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 22:30:18,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:18,254 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:18,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 22:30:18,255 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash 748551261, now seen corresponding path program 1 times [2022-11-25 22:30:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:18,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450095253] [2022-11-25 22:30:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:18,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 22:30:18,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450095253] [2022-11-25 22:30:18,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450095253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:18,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:18,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:30:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648688458] [2022-11-25 22:30:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:30:18,299 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:18,316 INFO L93 Difference]: Finished difference Result 198 states and 226 transitions. [2022-11-25 22:30:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:18,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-25 22:30:18,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:18,322 INFO L225 Difference]: With dead ends: 198 [2022-11-25 22:30:18,322 INFO L226 Difference]: Without dead ends: 197 [2022-11-25 22:30:18,323 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 [2022-11-25 22:30:18,323 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 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 [2022-11-25 22:30:18,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-25 22:30:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-25 22:30:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 155 states have (on average 1.1548387096774193) internal successors, (179), 157 states have internal predecessors, (179), 15 states have call successors, (15), 14 states have call predecessors, (15), 23 states have return successors, (25), 25 states have call predecessors, (25), 14 states have call successors, (25) [2022-11-25 22:30:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2022-11-25 22:30:18,339 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 43 [2022-11-25 22:30:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:18,340 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2022-11-25 22:30:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2022-11-25 22:30:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 22:30:18,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:18,347 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:18,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 22:30:18,348 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:18,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1730252686, now seen corresponding path program 1 times [2022-11-25 22:30:18,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:18,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86341332] [2022-11-25 22:30:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:18,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 22:30:18,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:18,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86341332] [2022-11-25 22:30:18,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86341332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:18,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:18,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:30:18,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382495264] [2022-11-25 22:30:18,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:18,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:30:18,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:30:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:30:18,495 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:18,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:18,543 INFO L93 Difference]: Finished difference Result 246 states and 273 transitions. [2022-11-25 22:30:18,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:30:18,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-25 22:30:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:18,547 INFO L225 Difference]: With dead ends: 246 [2022-11-25 22:30:18,547 INFO L226 Difference]: Without dead ends: 245 [2022-11-25 22:30:18,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:30:18,550 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:18,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:18,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-25 22:30:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-11-25 22:30:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 194 states have (on average 1.1237113402061856) internal successors, (218), 195 states have internal predecessors, (218), 15 states have call successors, (15), 14 states have call predecessors, (15), 32 states have return successors, (35), 35 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-25 22:30:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 268 transitions. [2022-11-25 22:30:18,570 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 268 transitions. Word has length 44 [2022-11-25 22:30:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:18,571 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 268 transitions. [2022-11-25 22:30:18,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:30:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 268 transitions. [2022-11-25 22:30:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 22:30:18,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:18,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:18,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 22:30:18,578 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1418044155, now seen corresponding path program 1 times [2022-11-25 22:30:18,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:18,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528093194] [2022-11-25 22:30:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:18,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:30:18,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:18,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528093194] [2022-11-25 22:30:18,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528093194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:18,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035279380] [2022-11-25 22:30:18,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:18,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:18,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:18,756 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:18,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:30:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:18,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:30:18,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:30:18,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:30:19,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035279380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:19,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1569173244] [2022-11-25 22:30:19,218 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-25 22:30:19,218 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:19,218 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:30:19,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:19,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-25 22:30:19,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485100711] [2022-11-25 22:30:19,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:19,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 22:30:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:19,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 22:30:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:30:19,232 INFO L87 Difference]: Start difference. First operand 245 states and 268 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-25 22:30:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:19,318 INFO L93 Difference]: Finished difference Result 345 states and 386 transitions. [2022-11-25 22:30:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:30:19,319 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2022-11-25 22:30:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:19,321 INFO L225 Difference]: With dead ends: 345 [2022-11-25 22:30:19,321 INFO L226 Difference]: Without dead ends: 318 [2022-11-25 22:30:19,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:30:19,323 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:19,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:30:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-25 22:30:19,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 270. [2022-11-25 22:30:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 214 states have (on average 1.1074766355140186) internal successors, (237), 215 states have internal predecessors, (237), 15 states have call successors, (15), 14 states have call predecessors, (15), 37 states have return successors, (40), 40 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-25 22:30:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2022-11-25 22:30:19,341 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 44 [2022-11-25 22:30:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:19,341 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2022-11-25 22:30:19,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-25 22:30:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2022-11-25 22:30:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-25 22:30:19,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:19,350 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-25 22:30:19,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 22:30:19,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 22:30:19,557 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting id2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1652081854, now seen corresponding path program 1 times [2022-11-25 22:30:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:19,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766367231] [2022-11-25 22:30:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 22:30:19,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:19,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766367231] [2022-11-25 22:30:19,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766367231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:19,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237502790] [2022-11-25 22:30:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:19,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:19,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:19,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:30:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:19,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 22:30:19,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 22:30:20,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 22:30:21,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237502790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:21,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2140410432] [2022-11-25 22:30:21,319 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-25 22:30:21,319 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:21,320 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:30:21,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:21,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 17] total 19 [2022-11-25 22:30:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839709765] [2022-11-25 22:30:21,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 22:30:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 22:30:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-25 22:30:21,324 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-25 22:30:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:21,654 INFO L93 Difference]: Finished difference Result 458 states and 495 transitions. [2022-11-25 22:30:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:30:21,658 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 59 [2022-11-25 22:30:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:21,660 INFO L225 Difference]: With dead ends: 458 [2022-11-25 22:30:21,660 INFO L226 Difference]: Without dead ends: 270 [2022-11-25 22:30:21,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 106 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-11-25 22:30:21,662 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 92 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:21,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 165 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:30:21,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-25 22:30:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-11-25 22:30:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 214 states have (on average 1.088785046728972) internal successors, (233), 215 states have internal predecessors, (233), 15 states have call successors, (15), 14 states have call predecessors, (15), 37 states have return successors, (40), 40 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-25 22:30:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2022-11-25 22:30:21,679 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 59 [2022-11-25 22:30:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:21,679 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2022-11-25 22:30:21,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-25 22:30:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2022-11-25 22:30:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 22:30:21,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:21,681 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1] [2022-11-25 22:30:21,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:21,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:21,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:21,889 INFO L85 PathProgramCache]: Analyzing trace with hash 444552092, now seen corresponding path program 2 times [2022-11-25 22:30:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:21,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066181835] [2022-11-25 22:30:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:21,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:22,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:22,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066181835] [2022-11-25 22:30:22,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066181835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:22,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650072782] [2022-11-25 22:30:22,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:30:22,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:22,626 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:22,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:30:22,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-25 22:30:22,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:30:22,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 22:30:22,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:22,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:23,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650072782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:23,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682208638] [2022-11-25 22:30:23,829 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:30:23,830 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:23,830 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:30:23,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:23,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2022-11-25 22:30:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987256126] [2022-11-25 22:30:23,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:23,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-25 22:30:23,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:23,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-25 22:30:23,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2022-11-25 22:30:23,835 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand has 56 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 29 states have internal predecessors, (104), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:25,641 INFO L93 Difference]: Finished difference Result 590 states and 614 transitions. [2022-11-25 22:30:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-25 22:30:25,643 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 29 states have internal predecessors, (104), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-25 22:30:25,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:25,646 INFO L225 Difference]: With dead ends: 590 [2022-11-25 22:30:25,646 INFO L226 Difference]: Without dead ends: 588 [2022-11-25 22:30:25,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1231, Invalid=6779, Unknown=0, NotChecked=0, Total=8010 [2022-11-25 22:30:25,650 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 840 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:25,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 607 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 22:30:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-11-25 22:30:25,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 563. [2022-11-25 22:30:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 449 states have (on average 1.0846325167037862) internal successors, (487), 449 states have internal predecessors, (487), 28 states have call successors, (28), 27 states have call predecessors, (28), 82 states have return successors, (86), 86 states have call predecessors, (86), 27 states have call successors, (86) [2022-11-25 22:30:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 601 transitions. [2022-11-25 22:30:25,682 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 601 transitions. Word has length 65 [2022-11-25 22:30:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:25,683 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 601 transitions. [2022-11-25 22:30:25,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 1.9622641509433962) internal successors, (104), 29 states have internal predecessors, (104), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 601 transitions. [2022-11-25 22:30:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 22:30:25,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:25,685 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2022-11-25 22:30:25,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 22:30:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 22:30:25,892 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting id2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1357262581, now seen corresponding path program 1 times [2022-11-25 22:30:25,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:25,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236281878] [2022-11-25 22:30:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:25,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-25 22:30:26,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:26,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236281878] [2022-11-25 22:30:26,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236281878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:26,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751880024] [2022-11-25 22:30:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:26,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:26,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:26,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:26,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:30:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:26,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 22:30:26,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:30:26,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 22:30:28,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751880024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:28,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1420203139] [2022-11-25 22:30:28,498 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-25 22:30:28,499 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:28,499 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:30:28,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:28,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 19] total 38 [2022-11-25 22:30:28,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014219485] [2022-11-25 22:30:28,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:28,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-25 22:30:28,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-25 22:30:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1292, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 22:30:28,505 INFO L87 Difference]: Start difference. First operand 563 states and 601 transitions. Second operand has 38 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 34 states have internal predecessors, (107), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-25 22:30:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:29,323 INFO L93 Difference]: Finished difference Result 589 states and 627 transitions. [2022-11-25 22:30:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 22:30:29,324 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 34 states have internal predecessors, (107), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) Word has length 69 [2022-11-25 22:30:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:29,325 INFO L225 Difference]: With dead ends: 589 [2022-11-25 22:30:29,325 INFO L226 Difference]: Without dead ends: 139 [2022-11-25 22:30:29,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 109 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=301, Invalid=2249, Unknown=0, NotChecked=0, Total=2550 [2022-11-25 22:30:29,332 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 145 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:29,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 94 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:30:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-25 22:30:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2022-11-25 22:30:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 109 states have internal predecessors, (110), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2022-11-25 22:30:29,346 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 69 [2022-11-25 22:30:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:29,347 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2022-11-25 22:30:29,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 34 states have internal predecessors, (107), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-25 22:30:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2022-11-25 22:30:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-25 22:30:29,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:29,350 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1] [2022-11-25 22:30:29,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:29,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 22:30:29,554 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:29,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 439025344, now seen corresponding path program 2 times [2022-11-25 22:30:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:29,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065749335] [2022-11-25 22:30:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:29,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:31,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:31,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065749335] [2022-11-25 22:30:31,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065749335] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:31,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83136254] [2022-11-25 22:30:31,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:30:31,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:31,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:31,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:31,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:30:31,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-11-25 22:30:31,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:30:31,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-25 22:30:31,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:32,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:35,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83136254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:35,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [808331014] [2022-11-25 22:30:35,095 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:30:35,095 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:35,095 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:30:35,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:35,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 106 [2022-11-25 22:30:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103439862] [2022-11-25 22:30:35,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:35,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-11-25 22:30:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-11-25 22:30:35,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2022-11-25 22:30:35,106 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand has 108 states, 105 states have (on average 1.980952380952381) internal successors, (208), 55 states have internal predecessors, (208), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:37,895 INFO L93 Difference]: Finished difference Result 276 states and 301 transitions. [2022-11-25 22:30:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-11-25 22:30:37,896 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 1.980952380952381) internal successors, (208), 55 states have internal predecessors, (208), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-11-25 22:30:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:37,898 INFO L225 Difference]: With dead ends: 276 [2022-11-25 22:30:37,898 INFO L226 Difference]: Without dead ends: 274 [2022-11-25 22:30:37,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2022-11-25 22:30:37,910 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 609 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:37,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 36 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:30:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-25 22:30:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2022-11-25 22:30:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 217 states have internal predecessors, (218), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2022-11-25 22:30:37,952 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 130 [2022-11-25 22:30:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:37,953 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2022-11-25 22:30:37,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 1.980952380952381) internal successors, (208), 55 states have internal predecessors, (208), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2022-11-25 22:30:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-25 22:30:37,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:37,961 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1] [2022-11-25 22:30:37,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:38,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 22:30:38,169 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:30:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1717766548, now seen corresponding path program 3 times [2022-11-25 22:30:38,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:38,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160469122] [2022-11-25 22:30:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:38,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 0 proven. 3328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:45,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:45,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160469122] [2022-11-25 22:30:45,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160469122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:45,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555728654] [2022-11-25 22:30:45,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:30:45,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:45,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:45,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:45,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:30:45,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:30:45,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:30:45,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-25 22:30:45,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 0 proven. 3328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:46,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 0 proven. 3328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:55,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555728654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:30:55,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [524869266] [2022-11-25 22:30:55,772 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:30:55,773 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:30:55,773 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:30:55,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:55,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 214 [2022-11-25 22:30:55,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005334855] [2022-11-25 22:30:55,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:55,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2022-11-25 22:30:55,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:55,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2022-11-25 22:30:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2022-11-25 22:30:55,787 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand has 216 states, 213 states have (on average 1.9906103286384977) internal successors, (424), 109 states have internal predecessors, (424), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:05,363 INFO L93 Difference]: Finished difference Result 541 states and 592 transitions. [2022-11-25 22:31:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-11-25 22:31:05,366 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 1.9906103286384977) internal successors, (424), 109 states have internal predecessors, (424), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2022-11-25 22:31:05,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:05,369 INFO L225 Difference]: With dead ends: 541 [2022-11-25 22:31:05,370 INFO L226 Difference]: Without dead ends: 539 [2022-11-25 22:31:05,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2022-11-25 22:31:05,384 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1337 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:05,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 42 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 22:31:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-11-25 22:31:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2022-11-25 22:31:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 428 states have (on average 1.0046728971962617) internal successors, (430), 429 states have internal predecessors, (430), 107 states have call successors, (107), 107 states have call predecessors, (107), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 537 transitions. [2022-11-25 22:31:05,430 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 537 transitions. Word has length 265 [2022-11-25 22:31:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:05,431 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 537 transitions. [2022-11-25 22:31:05,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 1.9906103286384977) internal successors, (424), 109 states have internal predecessors, (424), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 537 transitions. [2022-11-25 22:31:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-25 22:31:05,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:05,446 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 52, 52, 52, 1, 1, 1] [2022-11-25 22:31:05,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:05,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 22:31:05,654 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:31:05,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash -521224928, now seen corresponding path program 3 times [2022-11-25 22:31:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:05,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193125400] [2022-11-25 22:31:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13676 backedges. 0 proven. 13676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:33,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:33,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193125400] [2022-11-25 22:31:33,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193125400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:33,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239943457] [2022-11-25 22:31:33,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:31:33,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:33,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:33,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:33,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:31:33,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:31:33,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:31:33,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 214 conjunts are in the unsatisfiable core [2022-11-25 22:31:33,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13676 backedges. 0 proven. 13676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:34,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13676 backedges. 0 proven. 13676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:32:09,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239943457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:32:09,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1952759847] [2022-11-25 22:32:09,690 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:32:09,690 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:32:09,691 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:32:09,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:32:09,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213, 213] total 426 [2022-11-25 22:32:09,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002727681] [2022-11-25 22:32:09,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:32:09,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2022-11-25 22:32:09,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:32:09,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2022-11-25 22:32:09,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2022-11-25 22:32:09,728 INFO L87 Difference]: Start difference. First operand 537 states and 537 transitions. Second operand has 428 states, 425 states have (on average 1.9952941176470589) internal successors, (848), 215 states have internal predecessors, (848), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:32:47,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:32:47,412 INFO L93 Difference]: Finished difference Result 1076 states and 1181 transitions. [2022-11-25 22:32:47,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2022-11-25 22:32:47,414 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 425 states have (on average 1.9952941176470589) internal successors, (848), 215 states have internal predecessors, (848), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 530 [2022-11-25 22:32:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:32:47,419 INFO L225 Difference]: With dead ends: 1076 [2022-11-25 22:32:47,419 INFO L226 Difference]: Without dead ends: 1074 [2022-11-25 22:32:47,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1483 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 77.7s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2022-11-25 22:32:47,453 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3313 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:32:47,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3313 Valid, 51 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 22:32:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-11-25 22:32:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1072. [2022-11-25 22:32:47,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 856 states have (on average 1.0023364485981308) internal successors, (858), 857 states have internal predecessors, (858), 214 states have call successors, (214), 214 states have call predecessors, (214), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:32:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1072 transitions. [2022-11-25 22:32:47,543 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1072 transitions. Word has length 530 [2022-11-25 22:32:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:32:47,545 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1072 transitions. [2022-11-25 22:32:47,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 425 states have (on average 1.9952941176470589) internal successors, (848), 215 states have internal predecessors, (848), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:32:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1072 transitions. [2022-11-25 22:32:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2022-11-25 22:32:47,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:47,603 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1] [2022-11-25 22:32:47,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:47,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:32:47,813 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:32:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash 483549612, now seen corresponding path program 4 times [2022-11-25 22:32:47,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:32:47,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961760002] [2022-11-25 22:32:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:47,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:32:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 55968 backedges. 0 proven. 55968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:54,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:54,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961760002] [2022-11-25 22:34:54,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961760002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:34:54,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142471692] [2022-11-25 22:34:54,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 22:34:54,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:34:54,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:34:54,581 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:34:54,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:34:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:54,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 428 conjunts are in the unsatisfiable core [2022-11-25 22:34:54,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 55968 backedges. 0 proven. 55968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:34:56,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:36:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 55968 backedges. 0 proven. 55968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:36:52,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142471692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:36:52,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [894284756] [2022-11-25 22:36:52,502 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 22:36:52,502 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:36:52,503 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:36:52,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:36:52,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [427, 427, 427] total 854 [2022-11-25 22:36:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203463364] [2022-11-25 22:36:52,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:36:52,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 856 states [2022-11-25 22:36:52,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:36:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 856 interpolants. [2022-11-25 22:36:52,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92024, Invalid=639856, Unknown=0, NotChecked=0, Total=731880 [2022-11-25 22:36:52,581 INFO L87 Difference]: Start difference. First operand 1072 states and 1072 transitions. Second operand has 856 states, 853 states have (on average 1.9976553341148886) internal successors, (1704), 429 states have internal predecessors, (1704), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:39:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:39:33,234 INFO L93 Difference]: Finished difference Result 2141 states and 2352 transitions. [2022-11-25 22:39:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 854 states. [2022-11-25 22:39:33,237 INFO L78 Accepts]: Start accepts. Automaton has has 856 states, 853 states have (on average 1.9976553341148886) internal successors, (1704), 429 states have internal predecessors, (1704), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1065 [2022-11-25 22:39:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:39:33,245 INFO L225 Difference]: With dead ends: 2141 [2022-11-25 22:39:33,245 INFO L226 Difference]: Without dead ends: 2139 [2022-11-25 22:39:33,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2980 GetRequests, 1701 SyntacticMatches, 0 SemanticMatches, 1279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539537 ImplicationChecksByTransitivity, 258.6s TimeCoverageRelationStatistics Valid=228770, Invalid=1410910, Unknown=0, NotChecked=0, Total=1639680 [2022-11-25 22:39:33,351 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8093 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 4026 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8093 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 4026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:39:33,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8093 Valid, 42 Invalid, 4133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 4026 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 22:39:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2022-11-25 22:39:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2022-11-25 22:39:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1708 states have (on average 1.0011709601873535) internal successors, (1710), 1709 states have internal predecessors, (1710), 427 states have call successors, (427), 427 states have call predecessors, (427), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:39:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2137 transitions. [2022-11-25 22:39:33,495 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2137 transitions. Word has length 1065 [2022-11-25 22:39:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:39:33,497 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 2137 transitions. [2022-11-25 22:39:33,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 856 states, 853 states have (on average 1.9976553341148886) internal successors, (1704), 429 states have internal predecessors, (1704), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:39:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2137 transitions. [2022-11-25 22:39:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2131 [2022-11-25 22:39:33,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:39:33,538 INFO L195 NwaCegarLoop]: trace histogram [213, 213, 213, 213, 213, 213, 213, 212, 212, 212, 1, 1, 1] [2022-11-25 22:39:33,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:39:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf15f783-3d72-4dff-88c1-e2e0b2e1fd00/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-25 22:39:33,746 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-25 22:39:33,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:39:33,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1802647200, now seen corresponding path program 4 times [2022-11-25 22:39:33,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:39:33,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647313939] [2022-11-25 22:39:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:39:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:39:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat