./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW --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 109f1b0f7b496206cc9c53b0a3b6a7c393044a874053b245259453c5fb39b930 --- 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-4e7fbc6 [2022-11-23 15:01:42,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:01:42,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:01:42,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:01:42,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:01:42,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:01:42,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:01:42,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:01:42,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:01:42,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:01:42,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:01:42,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:01:42,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:01:42,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:01:42,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:01:42,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:01:42,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:01:42,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:01:42,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:01:42,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:01:42,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:01:42,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:01:42,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:01:42,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:01:42,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:01:42,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:01:42,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:01:42,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:01:42,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:01:42,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:01:42,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:01:42,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:01:42,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:01:42,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:01:42,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:01:42,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:01:42,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:01:42,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:01:42,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:01:42,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:01:42,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:01:42,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 15:01:42,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:01:42,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:01:42,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:01:42,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:01:42,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:01:42,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:01:42,418 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:01:42,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:01:42,419 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:01:42,419 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:01:42,419 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:01:42,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:01:42,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:01:42,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:01:42,420 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:01:42,421 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:01:42,421 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:01:42,421 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:01:42,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:01:42,422 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:01:42,422 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:01:42,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:01:42,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:01:42,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:01:42,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:01:42,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:01:42,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:01:42,424 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:01:42,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:01:42,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:01:42,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:01:42,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:01:42,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:01:42,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:01:42,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:01:42,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:01:42,427 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:01:42,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:01:42,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:01:42,427 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:01:42,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:01:42,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:01:42,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:01:42,428 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_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109f1b0f7b496206cc9c53b0a3b6a7c393044a874053b245259453c5fb39b930 [2022-11-23 15:01:42,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:01:42,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:01:42,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:01:42,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:01:42,839 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:01:42,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2022-11-23 15:01:46,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:01:46,354 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:01:46,354 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2022-11-23 15:01:46,361 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/data/31b4ca30f/6cb821ff56e74ecf9d54d4ce5703140a/FLAG0e3542199 [2022-11-23 15:01:46,384 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/data/31b4ca30f/6cb821ff56e74ecf9d54d4ce5703140a [2022-11-23 15:01:46,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:01:46,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:01:46,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:01:46,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:01:46,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:01:46,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7327a25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46, skipping insertion in model container [2022-11-23 15:01:46,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:01:46,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:01:46,704 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_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c[454,467] [2022-11-23 15:01:46,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:01:46,722 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:01:46,736 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_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c[454,467] [2022-11-23 15:01:46,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:01:46,753 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:01:46,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46 WrapperNode [2022-11-23 15:01:46,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:01:46,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:01:46,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:01:46,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:01:46,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,796 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-23 15:01:46,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:01:46,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:01:46,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:01:46,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:01:46,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,817 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:01:46,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:01:46,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:01:46,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:01:46,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (1/1) ... [2022-11-23 15:01:46,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:01:46,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:46,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:01:46,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:01:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:01:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:01:46,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:01:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:01:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-11-23 15:01:46,926 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-11-23 15:01:47,004 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:01:47,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:01:47,232 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:01:47,260 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:01:47,260 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:01:47,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:47 BoogieIcfgContainer [2022-11-23 15:01:47,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:01:47,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:01:47,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:01:47,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:01:47,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:01:46" (1/3) ... [2022-11-23 15:01:47,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a799fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:01:47, skipping insertion in model container [2022-11-23 15:01:47,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:01:46" (2/3) ... [2022-11-23 15:01:47,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a799fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:01:47, skipping insertion in model container [2022-11-23 15:01:47,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:47" (3/3) ... [2022-11-23 15:01:47,274 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2022-11-23 15:01:47,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:01:47,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 15:01:47,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:01:47,389 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;@45bd8c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:01:47,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 15:01:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:01:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:01:47,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:47,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:01:47,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash 62814452, now seen corresponding path program 1 times [2022-11-23 15:01:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:47,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052830361] [2022-11-23 15:01:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:47,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:47,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052830361] [2022-11-23 15:01:47,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052830361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:01:47,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:01:47,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:01:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532189746] [2022-11-23 15:01:47,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:01:47,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:01:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:01:47,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:01:47,854 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-11-23 15:01:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:47,963 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-11-23 15:01:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:01:47,966 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 [2022-11-23 15:01:47,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:47,975 INFO L225 Difference]: With dead ends: 36 [2022-11-23 15:01:47,975 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 15:01:47,979 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 [2022-11-23 15:01:47,983 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:47,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:01:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 15:01:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-23 15:01:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:01:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-23 15:01:48,042 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2022-11-23 15:01:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:48,044 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-23 15:01:48,045 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) [2022-11-23 15:01:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-23 15:01:48,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 15:01:48,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:48,048 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:01:48,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:01:48,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:48,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash 200486833, now seen corresponding path program 1 times [2022-11-23 15:01:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:48,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633612177] [2022-11-23 15:01:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:48,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:48,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633612177] [2022-11-23 15:01:48,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633612177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382023942] [2022-11-23 15:01:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:48,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:48,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:48,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:01:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:48,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:01:48,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:48,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:01:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:48,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382023942] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:01:48,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [453680830] [2022-11-23 15:01:48,692 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:01:48,692 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:01:48,698 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:336) 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) [2022-11-23 15:01:48,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:01:48,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-11-23 15:01:48,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154851488] [2022-11-23 15:01:48,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:01:48,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 15:01:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:48,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 15:01:48,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:01:48,720 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:01:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:49,007 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2022-11-23 15:01:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 15:01:49,008 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 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 10 [2022-11-23 15:01:49,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:49,011 INFO L225 Difference]: With dead ends: 77 [2022-11-23 15:01:49,011 INFO L226 Difference]: Without dead ends: 69 [2022-11-23 15:01:49,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-11-23 15:01:49,014 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 107 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:49,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 92 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:01:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-23 15:01:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2022-11-23 15:01:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.425) internal successors, (57), 43 states have internal predecessors, (57), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 15:01:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2022-11-23 15:01:49,029 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 10 [2022-11-23 15:01:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:49,030 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2022-11-23 15:01:49,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:01:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2022-11-23 15:01:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:01:49,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:49,031 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:01:49,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:01:49,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:49,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1920124580, now seen corresponding path program 1 times [2022-11-23 15:01:49,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:49,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908244201] [2022-11-23 15:01:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:49,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:49,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908244201] [2022-11-23 15:01:49,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908244201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:49,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012417071] [2022-11-23 15:01:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:49,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:49,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:49,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:49,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:01:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:49,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:01:49,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:49,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:01:49,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012417071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:01:49,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:01:49,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-23 15:01:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341301378] [2022-11-23 15:01:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:01:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:01:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:01:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:01:49,523 INFO L87 Difference]: Start difference. First operand 54 states and 68 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) [2022-11-23 15:01:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:49,596 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-11-23 15:01:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:01:49,597 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 [2022-11-23 15:01:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:49,599 INFO L225 Difference]: With dead ends: 56 [2022-11-23 15:01:49,600 INFO L226 Difference]: Without dead ends: 55 [2022-11-23 15:01:49,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:01:49,602 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:49,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 23 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:01:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-23 15:01:49,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2022-11-23 15:01:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.325) internal successors, (53), 42 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 15:01:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2022-11-23 15:01:49,615 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 11 [2022-11-23 15:01:49,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:49,616 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2022-11-23 15:01:49,616 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) [2022-11-23 15:01:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2022-11-23 15:01:49,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 15:01:49,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:49,618 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:01:49,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:01:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 15:01:49,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:49,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:49,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1383499620, now seen corresponding path program 1 times [2022-11-23 15:01:49,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:49,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906514432] [2022-11-23 15:01:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:49,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 15:01:49,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:49,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906514432] [2022-11-23 15:01:49,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906514432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:01:49,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:01:49,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:01:49,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968159420] [2022-11-23 15:01:49,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:01:49,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:01:49,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:49,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:01:49,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:01:49,889 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:01:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:49,914 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2022-11-23 15:01:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:01:49,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-23 15:01:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:49,916 INFO L225 Difference]: With dead ends: 73 [2022-11-23 15:01:49,916 INFO L226 Difference]: Without dead ends: 71 [2022-11-23 15:01:49,917 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 [2022-11-23 15:01:49,918 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:49,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:01:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-23 15:01:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-23 15:01:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-23 15:01:49,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-11-23 15:01:49,931 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2022-11-23 15:01:49,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:49,932 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-11-23 15:01:49,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:01:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-11-23 15:01:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 15:01:49,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:49,933 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:01:49,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:01:49,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash -746184899, now seen corresponding path program 1 times [2022-11-23 15:01:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:49,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922888893] [2022-11-23 15:01:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:01:49,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:49,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922888893] [2022-11-23 15:01:49,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922888893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:01:49,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:01:49,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:01:49,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000130600] [2022-11-23 15:01:49,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:01:49,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:01:49,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:49,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:01:49,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:01:49,977 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:01:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:49,989 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-11-23 15:01:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:01:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-23 15:01:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:49,991 INFO L225 Difference]: With dead ends: 71 [2022-11-23 15:01:49,991 INFO L226 Difference]: Without dead ends: 70 [2022-11-23 15:01:49,992 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 [2022-11-23 15:01:49,993 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 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 [2022-11-23 15:01:49,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:01:49,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-23 15:01:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-23 15:01:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-23 15:01:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2022-11-23 15:01:50,004 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2022-11-23 15:01:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:50,004 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2022-11-23 15:01:50,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:01:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2022-11-23 15:01:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 15:01:50,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:50,006 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-11-23 15:01:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:01:50,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -107041484, now seen corresponding path program 2 times [2022-11-23 15:01:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:50,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536265591] [2022-11-23 15:01:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:50,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:50,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:50,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536265591] [2022-11-23 15:01:50,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536265591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:50,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645518397] [2022-11-23 15:01:50,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:01:50,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:50,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:50,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:50,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:01:50,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 15:01:50,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:01:50,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:01:50,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:50,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:01:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:50,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645518397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:01:50,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [244979212] [2022-11-23 15:01:50,726 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:01:50,727 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:01:50,727 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:336) 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) [2022-11-23 15:01:50,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:01:50,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-11-23 15:01:50,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285923773] [2022-11-23 15:01:50,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:01:50,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-23 15:01:50,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-23 15:01:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-11-23 15:01:50,731 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:01:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:51,390 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2022-11-23 15:01:51,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 15:01:51,391 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 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 25 [2022-11-23 15:01:51,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:51,395 INFO L225 Difference]: With dead ends: 187 [2022-11-23 15:01:51,395 INFO L226 Difference]: Without dead ends: 155 [2022-11-23 15:01:51,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=419, Invalid=1221, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 15:01:51,400 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 326 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:51,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 265 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:01:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-23 15:01:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2022-11-23 15:01:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 115 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-23 15:01:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2022-11-23 15:01:51,431 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 25 [2022-11-23 15:01:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:51,431 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2022-11-23 15:01:51,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:01:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2022-11-23 15:01:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 15:01:51,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:51,434 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:01:51,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:01:51,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 15:01:51,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash -506338079, now seen corresponding path program 1 times [2022-11-23 15:01:51,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:51,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427391609] [2022-11-23 15:01:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:51,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 15:01:51,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:51,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427391609] [2022-11-23 15:01:51,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427391609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:51,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682331625] [2022-11-23 15:01:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:51,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:51,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:51,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:51,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:01:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:51,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 15:01:51,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:01:52,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:01:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:01:52,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682331625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:01:52,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1863701297] [2022-11-23 15:01:52,613 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 15:01:52,613 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:01:52,614 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:336) 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) [2022-11-23 15:01:52,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:01:52,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 15] total 29 [2022-11-23 15:01:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760067785] [2022-11-23 15:01:52,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:01:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 15:01:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 15:01:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-11-23 15:01:52,617 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-23 15:01:53,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:53,333 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2022-11-23 15:01:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 15:01:53,336 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2022-11-23 15:01:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:53,337 INFO L225 Difference]: With dead ends: 207 [2022-11-23 15:01:53,337 INFO L226 Difference]: Without dead ends: 141 [2022-11-23 15:01:53,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 15:01:53,340 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 222 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:53,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 327 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:01:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-23 15:01:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2022-11-23 15:01:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 105 states have internal predecessors, (118), 12 states have call successors, (12), 11 states have call predecessors, (12), 13 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-23 15:01:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2022-11-23 15:01:53,378 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 39 [2022-11-23 15:01:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:53,379 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2022-11-23 15:01:53,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-23 15:01:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2022-11-23 15:01:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 15:01:53,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:53,383 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-11-23 15:01:53,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 15:01:53,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:53,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1797304428, now seen corresponding path program 3 times [2022-11-23 15:01:53,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:53,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282793544] [2022-11-23 15:01:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:54,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:54,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282793544] [2022-11-23 15:01:54,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282793544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:54,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703542475] [2022-11-23 15:01:54,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:01:54,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:54,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:54,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:54,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:01:54,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:01:54,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:01:54,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 15:01:54,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:54,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:01:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:01:55,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703542475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:01:55,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4527719] [2022-11-23 15:01:55,072 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:01:55,072 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:01:55,073 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:336) 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) [2022-11-23 15:01:55,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:01:55,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 49 [2022-11-23 15:01:55,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403085350] [2022-11-23 15:01:55,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:01:55,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-23 15:01:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-23 15:01:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=1942, Unknown=0, NotChecked=0, Total=2550 [2022-11-23 15:01:55,076 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:01:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:56,432 INFO L93 Difference]: Finished difference Result 437 states and 469 transitions. [2022-11-23 15:01:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-23 15:01:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-23 15:01:56,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:56,436 INFO L225 Difference]: With dead ends: 437 [2022-11-23 15:01:56,436 INFO L226 Difference]: Without dead ends: 385 [2022-11-23 15:01:56,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1796, Invalid=5010, Unknown=0, NotChecked=0, Total=6806 [2022-11-23 15:01:56,440 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 793 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:56,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 536 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:01:56,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-23 15:01:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 363. [2022-11-23 15:01:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 290 states have (on average 1.1206896551724137) internal successors, (325), 289 states have internal predecessors, (325), 24 states have call successors, (24), 23 states have call predecessors, (24), 47 states have return successors, (50), 50 states have call predecessors, (50), 23 states have call successors, (50) [2022-11-23 15:01:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 399 transitions. [2022-11-23 15:01:56,474 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 399 transitions. Word has length 55 [2022-11-23 15:01:56,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:56,475 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 399 transitions. [2022-11-23 15:01:56,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:01:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 399 transitions. [2022-11-23 15:01:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:01:56,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:56,485 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2022-11-23 15:01:56,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:01:56,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:56,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:56,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1875709708, now seen corresponding path program 2 times [2022-11-23 15:01:56,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:56,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047330769] [2022-11-23 15:01:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 6 proven. 297 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 15:01:57,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:57,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047330769] [2022-11-23 15:01:57,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047330769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:57,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319140413] [2022-11-23 15:01:57,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:01:57,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:57,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:57,269 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:57,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:01:57,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 15:01:57,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:01:57,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:01:57,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-23 15:01:57,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:01:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-23 15:01:57,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319140413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:01:57,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2119553974] [2022-11-23 15:01:57,844 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 15:01:57,846 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:01:57,851 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:336) 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) [2022-11-23 15:01:57,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:01:57,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 37 [2022-11-23 15:01:57,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572532548] [2022-11-23 15:01:57,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:01:57,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 15:01:57,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:57,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 15:01:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 15:01:57,858 INFO L87 Difference]: Start difference. First operand 363 states and 399 transitions. Second operand has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:01:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:59,037 INFO L93 Difference]: Finished difference Result 720 states and 820 transitions. [2022-11-23 15:01:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-23 15:01:59,038 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-11-23 15:01:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:59,042 INFO L225 Difference]: With dead ends: 720 [2022-11-23 15:01:59,042 INFO L226 Difference]: Without dead ends: 664 [2022-11-23 15:01:59,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=561, Invalid=3995, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 15:01:59,046 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 299 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:59,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 268 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:01:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-11-23 15:01:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 655. [2022-11-23 15:01:59,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 526 states have (on average 1.064638783269962) internal successors, (560), 521 states have internal predecessors, (560), 24 states have call successors, (24), 23 states have call predecessors, (24), 103 states have return successors, (110), 110 states have call predecessors, (110), 23 states have call successors, (110) [2022-11-23 15:01:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 694 transitions. [2022-11-23 15:01:59,076 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 694 transitions. Word has length 74 [2022-11-23 15:01:59,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:59,077 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 694 transitions. [2022-11-23 15:01:59,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-23 15:01:59,078 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 694 transitions. [2022-11-23 15:01:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 15:01:59,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:59,079 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2022-11-23 15:01:59,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-23 15:01:59,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:59,286 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:01:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1873920279, now seen corresponding path program 3 times [2022-11-23 15:01:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:59,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982330024] [2022-11-23 15:01:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:59,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-23 15:01:59,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:59,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982330024] [2022-11-23 15:01:59,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982330024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:59,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966119938] [2022-11-23 15:01:59,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:01:59,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:59,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:59,983 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:02:00,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:02:00,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:02:00,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:02:00,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-23 15:02:00,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:02:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-23 15:02:00,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:02:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 420 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 15:02:02,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966119938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:02:02,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2026828517] [2022-11-23 15:02:02,591 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 15:02:02,591 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:02:02,591 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:336) 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) [2022-11-23 15:02:02,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:02:02,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 29] total 38 [2022-11-23 15:02:02,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6690545] [2022-11-23 15:02:02,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:02:02,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-23 15:02:02,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:02:02,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-23 15:02:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 15:02:02,594 INFO L87 Difference]: Start difference. First operand 655 states and 694 transitions. Second operand has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-23 15:02:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:02:03,120 INFO L93 Difference]: Finished difference Result 732 states and 770 transitions. [2022-11-23 15:02:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 15:02:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 99 [2022-11-23 15:02:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:02:03,124 INFO L225 Difference]: With dead ends: 732 [2022-11-23 15:02:03,124 INFO L226 Difference]: Without dead ends: 601 [2022-11-23 15:02:03,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 174 SyntacticMatches, 15 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=568, Invalid=2188, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 15:02:03,127 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 283 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:02:03,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 408 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:02:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-23 15:02:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 565. [2022-11-23 15:02:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 454 states have (on average 1.0682819383259912) internal successors, (485), 449 states have internal predecessors, (485), 24 states have call successors, (24), 23 states have call predecessors, (24), 85 states have return successors, (92), 92 states have call predecessors, (92), 23 states have call successors, (92) [2022-11-23 15:02:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 601 transitions. [2022-11-23 15:02:03,155 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 601 transitions. Word has length 99 [2022-11-23 15:02:03,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:02:03,155 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 601 transitions. [2022-11-23 15:02:03,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-23 15:02:03,156 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 601 transitions. [2022-11-23 15:02:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 15:02:03,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:02:03,158 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2022-11-23 15:02:03,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:02:03,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:02:03,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:02:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:02:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1122935724, now seen corresponding path program 4 times [2022-11-23 15:02:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:02:03,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702803517] [2022-11-23 15:02:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:03,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:02:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:02:04,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:02:04,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702803517] [2022-11-23 15:02:04,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702803517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:02:04,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818790178] [2022-11-23 15:02:04,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:02:04,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:02:04,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:02:04,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:02:04,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:02:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:04,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 15:02:04,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:02:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:02:05,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:02:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:02:07,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818790178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:02:07,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [274440898] [2022-11-23 15:02:07,680 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:02:07,680 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:02:07,680 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:336) 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) [2022-11-23 15:02:07,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:02:07,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 97 [2022-11-23 15:02:07,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295612645] [2022-11-23 15:02:07,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:02:07,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-11-23 15:02:07,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:02:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-11-23 15:02:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2360, Invalid=7342, Unknown=0, NotChecked=0, Total=9702 [2022-11-23 15:02:07,688 INFO L87 Difference]: Start difference. First operand 565 states and 601 transitions. Second operand has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:02:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:02:08,384 INFO L93 Difference]: Finished difference Result 580 states and 601 transitions. [2022-11-23 15:02:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-23 15:02:08,385 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-11-23 15:02:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:02:08,388 INFO L225 Difference]: With dead ends: 580 [2022-11-23 15:02:08,388 INFO L226 Difference]: Without dead ends: 579 [2022-11-23 15:02:08,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3827, Invalid=9513, Unknown=0, NotChecked=0, Total=13340 [2022-11-23 15:02:08,393 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 502 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:02:08,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 566 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:02:08,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-11-23 15:02:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 564. [2022-11-23 15:02:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 454 states have (on average 1.066079295154185) internal successors, (484), 448 states have internal predecessors, (484), 24 states have call successors, (24), 23 states have call predecessors, (24), 85 states have return successors, (92), 92 states have call predecessors, (92), 23 states have call successors, (92) [2022-11-23 15:02:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 600 transitions. [2022-11-23 15:02:08,433 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 600 transitions. Word has length 115 [2022-11-23 15:02:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:02:08,434 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 600 transitions. [2022-11-23 15:02:08,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:02:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 600 transitions. [2022-11-23 15:02:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 15:02:08,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:02:08,440 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2022-11-23 15:02:08,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-23 15:02:08,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 15:02:08,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:02:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:02:08,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1146813196, now seen corresponding path program 4 times [2022-11-23 15:02:08,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:02:08,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280616445] [2022-11-23 15:02:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:08,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:02:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 15:02:08,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:02:08,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280616445] [2022-11-23 15:02:08,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280616445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:02:08,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912168977] [2022-11-23 15:02:08,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:02:08,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:02:08,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:02:08,960 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:02:08,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:02:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:09,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:02:09,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:02:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 15:02:09,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:02:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 15:02:10,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912168977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:02:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078201199] [2022-11-23 15:02:10,755 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 15:02:10,755 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:02:10,755 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:336) 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) [2022-11-23 15:02:10,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:02:10,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-23 15:02:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114353459] [2022-11-23 15:02:10,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:02:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 15:02:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:02:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 15:02:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-23 15:02:10,760 INFO L87 Difference]: Start difference. First operand 564 states and 600 transitions. Second operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-23 15:02:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:02:10,891 INFO L93 Difference]: Finished difference Result 1289 states and 1480 transitions. [2022-11-23 15:02:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 15:02:10,892 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2022-11-23 15:02:10,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:02:10,900 INFO L225 Difference]: With dead ends: 1289 [2022-11-23 15:02:10,901 INFO L226 Difference]: Without dead ends: 1288 [2022-11-23 15:02:10,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-23 15:02:10,903 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:02:10,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:02:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-11-23 15:02:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2022-11-23 15:02:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1038 states have (on average 1.0289017341040463) internal successors, (1068), 1024 states have internal predecessors, (1068), 24 states have call successors, (24), 23 states have call predecessors, (24), 225 states have return successors, (240), 240 states have call predecessors, (240), 23 states have call successors, (240) [2022-11-23 15:02:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1332 transitions. [2022-11-23 15:02:10,956 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1332 transitions. Word has length 114 [2022-11-23 15:02:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:02:10,956 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1332 transitions. [2022-11-23 15:02:10,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-23 15:02:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1332 transitions. [2022-11-23 15:02:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 15:02:10,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:02:10,964 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1] [2022-11-23 15:02:10,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:02:11,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 15:02:11,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:02:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:02:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash -34577036, now seen corresponding path program 5 times [2022-11-23 15:02:11,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:02:11,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804199051] [2022-11-23 15:02:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:11,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:02:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 15:02:11,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:02:11,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804199051] [2022-11-23 15:02:11,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804199051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:02:11,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537829529] [2022-11-23 15:02:11,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:02:11,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:02:11,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:02:11,967 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:02:11,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:02:12,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-11-23 15:02:12,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:02:12,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 15:02:12,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:02:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 15:02:12,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:02:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-23 15:02:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537829529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:02:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [660307774] [2022-11-23 15:02:24,308 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 15:02:24,308 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:02:24,309 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:336) 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) [2022-11-23 15:02:24,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:02:24,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2022-11-23 15:02:24,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410656024] [2022-11-23 15:02:24,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:02:24,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-23 15:02:24,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:02:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-23 15:02:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-11-23 15:02:24,314 INFO L87 Difference]: Start difference. First operand 1288 states and 1332 transitions. Second operand has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-23 15:02:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:02:24,573 INFO L93 Difference]: Finished difference Result 3097 states and 3508 transitions. [2022-11-23 15:02:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-23 15:02:24,574 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) Word has length 154 [2022-11-23 15:02:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:02:24,581 INFO L225 Difference]: With dead ends: 3097 [2022-11-23 15:02:24,582 INFO L226 Difference]: Without dead ends: 1494 [2022-11-23 15:02:24,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-11-23 15:02:24,590 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:02:24,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:02:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-23 15:02:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2022-11-23 15:02:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1207 states have (on average 1.0190555095277547) internal successors, (1230), 1186 states have internal predecessors, (1230), 24 states have call successors, (24), 23 states have call predecessors, (24), 262 states have return successors, (284), 284 states have call predecessors, (284), 23 states have call successors, (284) [2022-11-23 15:02:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1538 transitions. [2022-11-23 15:02:24,681 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1538 transitions. Word has length 154 [2022-11-23 15:02:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:02:24,681 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1538 transitions. [2022-11-23 15:02:24,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-23 15:02:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1538 transitions. [2022-11-23 15:02:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-23 15:02:24,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:02:24,697 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 54, 31, 31, 31, 31, 30, 1, 1, 1, 1] [2022-11-23 15:02:24,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:02:24,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:02:24,904 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:02:24,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:02:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash 669926967, now seen corresponding path program 6 times [2022-11-23 15:02:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:02:24,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364601507] [2022-11-23 15:02:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:02:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 7263 trivial. 0 not checked. [2022-11-23 15:02:28,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:02:28,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364601507] [2022-11-23 15:02:28,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364601507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:02:28,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449765830] [2022-11-23 15:02:28,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:02:28,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:02:28,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:02:28,657 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:02:28,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 15:02:29,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:02:29,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:02:29,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-23 15:02:29,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:02:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 3648 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2022-11-23 15:02:33,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:04:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 5418 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-23 15:04:51,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449765830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:04:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [884162150] [2022-11-23 15:04:51,970 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 15:04:51,970 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:04:51,970 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:336) 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) [2022-11-23 15:04:51,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:04:51,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 83, 113] total 225 [2022-11-23 15:04:51,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997988021] [2022-11-23 15:04:51,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:04:51,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2022-11-23 15:04:51,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2022-11-23 15:04:51,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5234, Invalid=45166, Unknown=0, NotChecked=0, Total=50400 [2022-11-23 15:04:51,985 INFO L87 Difference]: Start difference. First operand 1494 states and 1538 transitions. Second operand has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-11-23 15:04:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:54,486 INFO L93 Difference]: Finished difference Result 1494 states and 1538 transitions. [2022-11-23 15:04:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-23 15:04:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) Word has length 429 [2022-11-23 15:04:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:54,490 INFO L225 Difference]: With dead ends: 1494 [2022-11-23 15:04:54,490 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:04:54,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 665 SyntacticMatches, 31 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28749 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=8077, Invalid=53675, Unknown=0, NotChecked=0, Total=61752 [2022-11-23 15:04:54,500 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 103 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:54,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 24 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 15:04:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:04:54,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:04:54,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:04:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:04:54,501 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 429 [2022-11-23 15:04:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:54,502 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:04:54,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-11-23 15:04:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:04:54,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:04:54,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-23 15:04:54,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-23 15:04:54,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-23 15:04:54,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-23 15:04:54,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 15:04:54,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 15:04:54,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:04:55,298 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:04:55,298 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:04:55,298 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (= |ULTIMATE.start_main_~input~0#1| 15) [2022-11-23 15:04:55,298 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-23 15:04:55,299 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,299 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,299 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2022-11-23 15:04:55,299 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2022-11-23 15:04:55,299 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2022-11-23 15:04:55,299 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,299 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,300 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,300 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-23 15:04:55,300 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,300 INFO L895 garLoopResultBuilder]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse0 (<= id_~x |id_#in~x|))) (and (or (= id_~x 15) (not (<= |id_#in~x| 15)) (not (<= 15 |id_#in~x|))) (or (not (<= |id_#in~x| 1)) (and .cse0 (<= 1 id_~x)) (not (<= 1 |id_#in~x|))) (or (not (<= |id_#in~x| 0)) (not (<= 0 |id_#in~x|))) (or (not (<= 2 |id_#in~x|)) (and .cse0 (<= |id_#in~x| id_~x)) (not (<= |id_#in~x| 14))))) [2022-11-23 15:04:55,300 INFO L899 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,300 INFO L899 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,301 INFO L899 garLoopResultBuilder]: For program point L8-5(line 8) no Hoare annotation was computed. [2022-11-23 15:04:55,313 INFO L444 BasicCegarLoop]: Path program histogram: [6, 4, 1, 1, 1, 1] [2022-11-23 15:04:55,321 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:04:55,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:04:55 BoogieIcfgContainer [2022-11-23 15:04:55,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:04:55,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:04:55,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:04:55,330 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:04:55,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:01:47" (3/4) ... [2022-11-23 15:04:55,334 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:04:55,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-11-23 15:04:55,348 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-23 15:04:55,348 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 15:04:55,348 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 15:04:55,348 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:04:55,392 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:04:55,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:04:55,393 INFO L158 Benchmark]: Toolchain (without parser) took 188998.55ms. Allocated memory was 169.9MB in the beginning and 625.0MB in the end (delta: 455.1MB). Free memory was 139.3MB in the beginning and 470.3MB in the end (delta: -331.0MB). Peak memory consumption was 124.0MB. Max. memory is 16.1GB. [2022-11-23 15:04:55,393 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:04:55,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.76ms. Allocated memory is still 169.9MB. Free memory was 139.3MB in the beginning and 134.0MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:04:55,395 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.41ms. Allocated memory is still 169.9MB. Free memory was 134.0MB in the beginning and 133.1MB in the end (delta: 890.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:04:55,395 INFO L158 Benchmark]: Boogie Preprocessor took 22.56ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 131.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:04:55,395 INFO L158 Benchmark]: RCFGBuilder took 442.70ms. Allocated memory is still 169.9MB. Free memory was 131.9MB in the beginning and 121.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:04:55,397 INFO L158 Benchmark]: TraceAbstraction took 188062.04ms. Allocated memory was 169.9MB in the beginning and 625.0MB in the end (delta: 455.1MB). Free memory was 120.6MB in the beginning and 473.4MB in the end (delta: -352.9MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. [2022-11-23 15:04:55,397 INFO L158 Benchmark]: Witness Printer took 63.06ms. Allocated memory is still 625.0MB. Free memory was 473.4MB in the beginning and 470.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:04:55,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.76ms. Allocated memory is still 169.9MB. Free memory was 139.3MB in the beginning and 134.0MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.41ms. Allocated memory is still 169.9MB. Free memory was 134.0MB in the beginning and 133.1MB in the end (delta: 890.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.56ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 131.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.70ms. Allocated memory is still 169.9MB. Free memory was 131.9MB in the beginning and 121.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 188062.04ms. Allocated memory was 169.9MB in the beginning and 625.0MB in the end (delta: 455.1MB). Free memory was 120.6MB in the beginning and 473.4MB in the end (delta: -352.9MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. * Witness Printer took 63.06ms. Allocated memory is still 625.0MB. Free memory was 473.4MB in the beginning and 470.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 188.0s, OverallIterations: 14, TraceHistogramMax: 55, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2731 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2706 mSDsluCounter, 2818 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2443 mSDsCounter, 720 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5235 IncrementalHoareTripleChecker+Invalid, 5955 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 720 mSolverCounterUnsat, 375 mSDtfsCounter, 5235 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2661 GetRequests, 1845 SyntacticMatches, 48 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37590 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=13, InterpolantAutomatonStates: 399, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 119 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 49 PreInvPairs, 49 NumberOfFragments, 58 HoareAnnotationTreeSize, 49 FomulaSimplifications, 798 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1184 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 173.7s InterpolantComputationTime, 2296 NumberOfCodeBlocks, 2246 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 3375 ConstructedInterpolants, 0 QuantifiedInterpolants, 9282 SizeOfPredicates, 117 NumberOfNonLiveVariables, 2231 ConjunctsInSsa, 303 ConjunctsInUnsatCore, 35 InterpolantComputations, 4 PerfectInterpolantSequences, 21656/41085 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 15:04:55,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea64b52-9849-4057-bb1a-6be8b1aa44c2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE