./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_11_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_11_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 64bit --witnessprinter.graph.data.programhash fe4bfbac4fda72f0d1c0b2f3cce738b57a7923578874429d64650cf8d3f21ce2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:23:52,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:23:52,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-02 11:23:52,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:23:52,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:23:52,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:23:52,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:23:52,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:23:52,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:23:52,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:23:52,367 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:23:52,367 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:23:52,368 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:23:52,369 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:23:52,369 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:23:52,370 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:23:52,371 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:23:52,371 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:23:52,372 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:23:52,372 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:23:52,373 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:23:52,374 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:23:52,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:23:52,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:23:52,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:23:52,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:23:52,378 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:23:52,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:23:52,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:23:52,380 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:23:52,380 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 11:23:52,381 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:23:52,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:23:52,382 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:23:52,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:23:52,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:23:52,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:23:52,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:52,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:23:52,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:23:52,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:23:52,386 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:23:52,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:23:52,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:23:52,388 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:23:52,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:23:52,388 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4bfbac4fda72f0d1c0b2f3cce738b57a7923578874429d64650cf8d3f21ce2 [2024-11-02 11:23:52,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:23:52,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:23:52,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:23:52,827 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:23:52,828 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:23:52,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_11_good.i Unable to find full path for "g++" [2024-11-02 11:23:55,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:23:55,758 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:23:55,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_11_good.i [2024-11-02 11:23:55,784 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/data/6faeee02f/c2406529be35449bbac5f9c0db5623e0/FLAGd5e766990 [2024-11-02 11:23:55,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/data/6faeee02f/c2406529be35449bbac5f9c0db5623e0 [2024-11-02 11:23:55,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:23:55,812 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:23:55,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:55,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:23:55,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:23:55,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:55" (1/1) ... [2024-11-02 11:23:55,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdedd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:55, skipping insertion in model container [2024-11-02 11:23:55,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:55" (1/1) ... [2024-11-02 11:23:55,888 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:23:56,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:57,008 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:23:57,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:57,319 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:23:57,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57 WrapperNode [2024-11-02 11:23:57,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:57,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:57,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:23:57,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:23:57,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,411 INFO L138 Inliner]: procedures = 501, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 249 [2024-11-02 11:23:57,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:57,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:23:57,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:23:57,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:23:57,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:23:57,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:23:57,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:23:57,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:23:57,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (1/1) ... [2024-11-02 11:23:57,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:57,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:57,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:23:57,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:23:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2024-11-02 11:23:57,553 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2024-11-02 11:23:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-02 11:23:57,553 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-02 11:23:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrue [2024-11-02 11:23:57,553 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrue [2024-11-02 11:23:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:23:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:23:57,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:23:57,555 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsFalse [2024-11-02 11:23:57,555 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsFalse [2024-11-02 11:23:57,757 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:23:57,760 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:23:58,245 INFO L? ?]: Removed 100 outVars from TransFormulas that were not future-live. [2024-11-02 11:23:58,247 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:23:58,708 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:23:58,709 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 11:23:58,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:58 BoogieIcfgContainer [2024-11-02 11:23:58,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:23:58,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:23:58,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:23:58,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:23:58,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:23:55" (1/3) ... [2024-11-02 11:23:58,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510097e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:58, skipping insertion in model container [2024-11-02 11:23:58,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:57" (2/3) ... [2024-11-02 11:23:58,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510097e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:58, skipping insertion in model container [2024-11-02 11:23:58,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:58" (3/3) ... [2024-11-02 11:23:58,724 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_predec_11_good.i [2024-11-02 11:23:58,747 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:23:58,748 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-02 11:23:58,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:23:58,840 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6fa03c10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:23:58,841 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-02 11:23:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 50 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-02 11:23:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 11:23:58,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:58,859 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:58,860 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 11:23:58,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1639020143, now seen corresponding path program 1 times [2024-11-02 11:23:58,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:58,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862906041] [2024-11-02 11:23:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:23:59,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:59,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862906041] [2024-11-02 11:23:59,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862906041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:59,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:59,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:23:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127321042] [2024-11-02 11:23:59,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:59,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:23:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:23:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:23:59,449 INFO L87 Difference]: Start difference. First operand has 73 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 50 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 11:23:59,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:59,612 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-11-02 11:23:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:23:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2024-11-02 11:23:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:59,623 INFO L225 Difference]: With dead ends: 73 [2024-11-02 11:23:59,624 INFO L226 Difference]: Without dead ends: 66 [2024-11-02 11:23:59,627 INFO L431 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 [2024-11-02 11:23:59,631 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 1 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:59,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 153 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-02 11:23:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-02 11:23:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 45 states have internal predecessors, (51), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-02 11:23:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2024-11-02 11:23:59,688 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 16 [2024-11-02 11:23:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:59,690 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2024-11-02 11:23:59,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-02 11:23:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2024-11-02 11:23:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 11:23:59,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:59,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:59,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:23:59,694 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 11:23:59,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 729983268, now seen corresponding path program 1 times [2024-11-02 11:23:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:59,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099254032] [2024-11-02 11:23:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:00,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:00,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099254032] [2024-11-02 11:24:00,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099254032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:00,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:00,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:24:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980877674] [2024-11-02 11:24:00,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:00,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:24:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:24:00,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:24:00,162 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 11:24:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:00,257 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2024-11-02 11:24:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:24:00,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2024-11-02 11:24:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:00,259 INFO L225 Difference]: With dead ends: 67 [2024-11-02 11:24:00,260 INFO L226 Difference]: Without dead ends: 66 [2024-11-02 11:24:00,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:24:00,261 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 2 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:00,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 197 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:24:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-02 11:24:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-02 11:24:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 44 states have internal predecessors, (50), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-02 11:24:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2024-11-02 11:24:00,273 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 17 [2024-11-02 11:24:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:00,274 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2024-11-02 11:24:00,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 11:24:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2024-11-02 11:24:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 11:24:00,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:00,276 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:00,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:24:00,277 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 11:24:00,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1812377254, now seen corresponding path program 1 times [2024-11-02 11:24:00,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:00,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655556665] [2024-11-02 11:24:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 11:24:00,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:00,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655556665] [2024-11-02 11:24:00,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655556665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:00,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:00,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:24:00,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698819956] [2024-11-02 11:24:00,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:00,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:24:00,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:00,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:24:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:24:00,467 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-02 11:24:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:00,533 INFO L93 Difference]: Finished difference Result 113 states and 139 transitions. [2024-11-02 11:24:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:24:00,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2024-11-02 11:24:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:00,535 INFO L225 Difference]: With dead ends: 113 [2024-11-02 11:24:00,535 INFO L226 Difference]: Without dead ends: 63 [2024-11-02 11:24:00,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:24:00,537 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:00,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 11:24:00,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-02 11:24:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-02 11:24:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.263157894736842) internal successors, (48), 43 states have internal predecessors, (48), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-02 11:24:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-02 11:24:00,548 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 30 [2024-11-02 11:24:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:00,548 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-02 11:24:00,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-02 11:24:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-02 11:24:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-02 11:24:00,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:00,550 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:00,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 11:24:00,550 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 11:24:00,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:00,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2039548672, now seen corresponding path program 1 times [2024-11-02 11:24:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:00,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025991007] [2024-11-02 11:24:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:00,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 11:24:00,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:00,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025991007] [2024-11-02 11:24:00,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025991007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:00,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:00,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:24:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937171615] [2024-11-02 11:24:00,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:00,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:24:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:24:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:00,634 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 11:24:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:00,693 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-11-02 11:24:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:24:00,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 31 [2024-11-02 11:24:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:00,695 INFO L225 Difference]: With dead ends: 63 [2024-11-02 11:24:00,696 INFO L226 Difference]: Without dead ends: 62 [2024-11-02 11:24:00,696 INFO L431 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 [2024-11-02 11:24:00,698 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 1 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:00,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 11:24:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-02 11:24:00,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-02 11:24:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.236842105263158) internal successors, (47), 42 states have internal predecessors, (47), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-02 11:24:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-11-02 11:24:00,708 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 31 [2024-11-02 11:24:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:00,709 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-11-02 11:24:00,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-02 11:24:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-11-02 11:24:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 11:24:00,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:00,711 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:00,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 11:24:00,711 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-02 11:24:00,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1198500352, now seen corresponding path program 1 times [2024-11-02 11:24:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:00,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891299497] [2024-11-02 11:24:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 11:24:01,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:01,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891299497] [2024-11-02 11:24:01,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891299497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:24:01,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879698165] [2024-11-02 11:24:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:01,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:01,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:01,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:24:01,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93063d80-9f6f-4d46-9568-da537ebf5873/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:24:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:01,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:24:01,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 11:24:04,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:24:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 11:24:05,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879698165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:24:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1476456079] [2024-11-02 11:24:05,531 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-02 11:24:05,531 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:24:05,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:24:05,541 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:24:05,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 11:24:19,228 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsTrue with input of size 24 for LOIs [2024-11-02 11:24:19,232 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsFalse with input of size 229 for LOIs [2024-11-02 11:24:19,452 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 242 for LOIs [2024-11-02 11:24:19,750 INFO L180 IcfgInterpreter]: Interpretation finished