./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/prod4br-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/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_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/prod4br-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9fc373a278835802938e4c08f2544f1651ce1de6dc177c0a58501e43687c477d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:33:58,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:33:58,134 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:33:58,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:33:58,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:33:58,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:33:58,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:33:58,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:33:58,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:33:58,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:33:58,170 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:33:58,171 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:33:58,171 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:33:58,171 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:33:58,172 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:33:58,172 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:33:58,173 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:33:58,173 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:33:58,173 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:33:58,174 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:33:58,174 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:33:58,179 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:33:58,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:33:58,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:33:58,180 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:33:58,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:33:58,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:33:58,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:33:58,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:33:58,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:33:58,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:33:58,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:33:58,184 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:33:58,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:33:58,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:33:58,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:33:58,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:33:58,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:33:58,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:58,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:33:58,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:33:58,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:33:58,187 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:33:58,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:33:58,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:33:58,188 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:33:58,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:33:58,189 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_7efb181f-8323-4c02-a85b-b764db87d967/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fc373a278835802938e4c08f2544f1651ce1de6dc177c0a58501e43687c477d [2024-11-02 12:33:58,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:33:58,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:33:58,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:33:58,570 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:33:58,571 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:33:58,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench/prod4br-ll.c Unable to find full path for "g++" [2024-11-02 12:34:00,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:34:00,781 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:34:00,781 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/sv-benchmarks/c/nla-digbench/prod4br-ll.c [2024-11-02 12:34:00,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/data/a925b9691/092de1cb0114490abe42f25db9c963c5/FLAGed47794ff [2024-11-02 12:34:01,185 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/data/a925b9691/092de1cb0114490abe42f25db9c963c5 [2024-11-02 12:34:01,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:34:01,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:34:01,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:01,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:34:01,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:34:01,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c53c1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01, skipping insertion in model container [2024-11-02 12:34:01,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:34:01,519 WARN L251 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_7efb181f-8323-4c02-a85b-b764db87d967/sv-benchmarks/c/nla-digbench/prod4br-ll.c[524,537] [2024-11-02 12:34:01,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:01,574 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:34:01,590 WARN L251 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_7efb181f-8323-4c02-a85b-b764db87d967/sv-benchmarks/c/nla-digbench/prod4br-ll.c[524,537] [2024-11-02 12:34:01,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:01,634 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:34:01,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01 WrapperNode [2024-11-02 12:34:01,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:01,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:01,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:34:01,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:34:01,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,689 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-02 12:34:01,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:01,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:34:01,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:34:01,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:34:01,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:34:01,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:34:01,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:34:01,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:34:01,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (1/1) ... [2024-11-02 12:34:01,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:34:01,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:01,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:34:01,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:34:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:34:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:34:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:34:01,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:34:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:34:01,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:34:01,906 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:34:01,909 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:34:02,198 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-02 12:34:02,199 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:34:02,353 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:34:02,354 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:34:02,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:02 BoogieIcfgContainer [2024-11-02 12:34:02,354 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:34:02,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:34:02,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:34:02,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:34:02,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:34:01" (1/3) ... [2024-11-02 12:34:02,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f98f24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:34:02, skipping insertion in model container [2024-11-02 12:34:02,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:01" (2/3) ... [2024-11-02 12:34:02,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f98f24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:34:02, skipping insertion in model container [2024-11-02 12:34:02,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:02" (3/3) ... [2024-11-02 12:34:02,367 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll.c [2024-11-02 12:34:02,389 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:34:02,389 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:34:02,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:34:02,474 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;@2459add1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:34:02,475 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:34:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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 12:34:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:34:02,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:02,489 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:34:02,489 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:02,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1327674366, now seen corresponding path program 1 times [2024-11-02 12:34:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:02,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747753241] [2024-11-02 12:34:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:02,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:34:02,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74366286] [2024-11-02 12:34:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:02,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:02,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:02,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:02,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:34:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:02,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-02 12:34:02,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:02,997 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 12:34:02,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:34:03,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747753241] [2024-11-02 12:34:03,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:34:03,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74366286] [2024-11-02 12:34:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74366286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:03,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:34:03,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327855099] [2024-11-02 12:34:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:03,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:34:03,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:34:03,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:34:03,050 INFO L87 Difference]: Start difference. First operand has 14 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:03,161 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2024-11-02 12:34:03,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:34:03,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-02 12:34:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:03,186 INFO L225 Difference]: With dead ends: 37 [2024-11-02 12:34:03,186 INFO L226 Difference]: Without dead ends: 21 [2024-11-02 12:34:03,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:34:03,204 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:03,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-02 12:34:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-11-02 12:34:03,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:34:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-02 12:34:03,295 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2024-11-02 12:34:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:03,296 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-02 12:34:03,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-02 12:34:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:34:03,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:03,300 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:03,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:34:03,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-02 12:34:03,505 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:03,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:03,507 INFO L85 PathProgramCache]: Analyzing trace with hash 361081967, now seen corresponding path program 1 times [2024-11-02 12:34:03,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:03,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684155417] [2024-11-02 12:34:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:03,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:34:03,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444322333] [2024-11-02 12:34:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:03,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:03,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:03,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:03,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:34:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:03,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-02 12:34:03,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:03,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:04,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684155417] [2024-11-02 12:34:04,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:34:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444322333] [2024-11-02 12:34:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444322333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [675533117] [2024-11-02 12:34:04,386 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:34:04,386 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:04,391 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:04,397 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:04,398 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:04,783 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2024-11-02 12:34:04,830 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:05,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [675533117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:05,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:34:05,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 8] total 16 [2024-11-02 12:34:05,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774272869] [2024-11-02 12:34:05,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:05,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:34:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:34:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:34:05,700 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 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) [2024-11-02 12:34:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:05,838 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-02 12:34:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:34:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 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 12 [2024-11-02 12:34:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:05,840 INFO L225 Difference]: With dead ends: 27 [2024-11-02 12:34:05,840 INFO L226 Difference]: Without dead ends: 19 [2024-11-02 12:34:05,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-02 12:34:05,845 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:05,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:05,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-02 12:34:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-02 12:34:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:34:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-02 12:34:05,862 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2024-11-02 12:34:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:05,863 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-02 12:34:05,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 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) [2024-11-02 12:34:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-02 12:34:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:34:05,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:05,866 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:05,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:06,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:06,071 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:06,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash -100732938, now seen corresponding path program 1 times [2024-11-02 12:34:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:06,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689822229] [2024-11-02 12:34:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:06,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:34:06,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389027106] [2024-11-02 12:34:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:06,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:06,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:06,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:06,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:34:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:06,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-02 12:34:06,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:07,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:08,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:08,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689822229] [2024-11-02 12:34:08,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:34:08,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389027106] [2024-11-02 12:34:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389027106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1024318898] [2024-11-02 12:34:08,075 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-02 12:34:08,075 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:08,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:08,076 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:08,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:08,932 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2024-11-02 12:34:08,967 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:13,395 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '359#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-02 12:34:13,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:13,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:34:13,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2024-11-02 12:34:13,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682334128] [2024-11-02 12:34:13,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:13,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 12:34:13,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 12:34:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-02 12:34:13,403 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:34:13,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:13,630 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-11-02 12:34:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 12:34:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-11-02 12:34:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:13,632 INFO L225 Difference]: With dead ends: 30 [2024-11-02 12:34:13,632 INFO L226 Difference]: Without dead ends: 28 [2024-11-02 12:34:13,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-02 12:34:13,635 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:13,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-02 12:34:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-11-02 12:34:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:34:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-11-02 12:34:13,654 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-11-02 12:34:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:13,655 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-11-02 12:34:13,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:34:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-11-02 12:34:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 12:34:13,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:13,656 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:13,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:13,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:13,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:13,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:13,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1158777187, now seen corresponding path program 1 times [2024-11-02 12:34:13,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:13,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687616811] [2024-11-02 12:34:13,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:13,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:34:13,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930836434] [2024-11-02 12:34:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:13,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:13,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:13,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:13,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:34:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:14,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-02 12:34:14,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:34:14,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 12:34:14,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:14,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687616811] [2024-11-02 12:34:14,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:34:14,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930836434] [2024-11-02 12:34:14,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930836434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:14,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [810688197] [2024-11-02 12:34:14,285 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:34:14,285 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:14,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:14,286 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:14,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:14,871 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 48 for LOIs [2024-11-02 12:34:14,908 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:19,407 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '569#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-02 12:34:19,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:19,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:34:19,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-11-02 12:34:19,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720746417] [2024-11-02 12:34:19,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:19,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 12:34:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:19,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 12:34:19,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-02 12:34:19,410 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:34:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:19,545 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2024-11-02 12:34:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:34:19,545 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 19 [2024-11-02 12:34:19,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:19,546 INFO L225 Difference]: With dead ends: 29 [2024-11-02 12:34:19,546 INFO L226 Difference]: Without dead ends: 25 [2024-11-02 12:34:19,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-02 12:34:19,548 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:19,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-02 12:34:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-02 12:34:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:34:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2024-11-02 12:34:19,558 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2024-11-02 12:34:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:19,559 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2024-11-02 12:34:19,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:34:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2024-11-02 12:34:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:34:19,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:19,560 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:19,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:19,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:19,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:19,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1021874544, now seen corresponding path program 1 times [2024-11-02 12:34:19,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:19,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514833360] [2024-11-02 12:34:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:19,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:34:19,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476049426] [2024-11-02 12:34:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:19,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:19,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:19,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:19,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:34:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:19,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:34:19,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:34:19,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:34:19,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:19,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514833360] [2024-11-02 12:34:19,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:34:19,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476049426] [2024-11-02 12:34:19,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476049426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:19,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:19,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:34:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265839146] [2024-11-02 12:34:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:19,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:34:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:34:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:34:19,931 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 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) [2024-11-02 12:34:19,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:19,975 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2024-11-02 12:34:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:34:19,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 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) Word has length 24 [2024-11-02 12:34:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:19,976 INFO L225 Difference]: With dead ends: 25 [2024-11-02 12:34:19,976 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:34:19,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:34:19,978 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:19,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:34:19,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:34:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:34:19,980 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) [2024-11-02 12:34:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:34:19,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2024-11-02 12:34:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:19,980 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:34:19,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 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) [2024-11-02 12:34:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:34:19,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:34:19,988 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:34:20,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:20,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:20,192 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-02 12:34:20,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:34:20,643 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:34:20,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:34:20 BoogieIcfgContainer [2024-11-02 12:34:20,672 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:34:20,673 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:34:20,673 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:34:20,673 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:34:20,673 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:02" (3/4) ... [2024-11-02 12:34:20,676 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:34:20,680 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-02 12:34:20,686 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-02 12:34:20,687 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-02 12:34:20,687 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-02 12:34:20,687 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:34:20,782 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:34:20,783 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:34:20,783 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:34:20,784 INFO L158 Benchmark]: Toolchain (without parser) took 19588.04ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 127.5MB in the beginning and 184.9MB in the end (delta: -57.4MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2024-11-02 12:34:20,784 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:34:20,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.71ms. Allocated memory is still 161.5MB. Free memory was 127.5MB in the beginning and 126.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-02 12:34:20,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.74ms. Allocated memory is still 161.5MB. Free memory was 126.3MB in the beginning and 125.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:34:20,785 INFO L158 Benchmark]: Boogie Preprocessor took 37.58ms. Allocated memory is still 161.5MB. Free memory was 125.2MB in the beginning and 124.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:34:20,785 INFO L158 Benchmark]: RCFGBuilder took 626.36ms. Allocated memory is still 161.5MB. Free memory was 123.1MB in the beginning and 104.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-02 12:34:20,786 INFO L158 Benchmark]: TraceAbstraction took 18314.87ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 103.2MB in the beginning and 189.1MB in the end (delta: -85.9MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. [2024-11-02 12:34:20,786 INFO L158 Benchmark]: Witness Printer took 110.50ms. Allocated memory is still 234.9MB. Free memory was 189.1MB in the beginning and 184.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:34:20,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.71ms. Allocated memory is still 161.5MB. Free memory was 127.5MB in the beginning and 126.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.74ms. Allocated memory is still 161.5MB. Free memory was 126.3MB in the beginning and 125.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.58ms. Allocated memory is still 161.5MB. Free memory was 125.2MB in the beginning and 124.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 626.36ms. Allocated memory is still 161.5MB. Free memory was 123.1MB in the beginning and 104.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 18314.87ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 103.2MB in the beginning and 189.1MB in the end (delta: -85.9MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. * Witness Printer took 110.50ms. Allocated memory is still 234.9MB. Free memory was 189.1MB in the beginning and 184.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.8s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 179 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 223 IncrementalHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 42 mSDtfsCounter, 223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 110 ConstructedInterpolants, 2 QuantifiedInterpolants, 670 SizeOfPredicates, 23 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 46/55 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: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 4, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 16, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 27, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 58, DAG_COMPRESSION_RETAINED_NODES: 31, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((q + (((__int128) a * b) * p)) == ((long long) x * y)) - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:34:20,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efb181f-8323-4c02-a85b-b764db87d967/bin/utaipan-verify-DbMuA5NWw2/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