./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/geo1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/geo1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ --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 f88e56db5d4a069a75f7d157c02a6d71e69f72bef3f2984433669539d06b3f44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:44,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:44,478 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:14:44,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:44,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:44,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:44,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:44,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:44,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:44,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:44,545 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:44,546 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:44,547 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:44,548 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:14:44,549 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:44,549 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:44,549 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:14:44,550 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:14:44,550 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:44,551 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:14:44,552 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:14:44,553 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:14:44,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:44,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:14:44,555 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:14:44,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:44,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:14:44,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:44,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:14:44,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:44,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:14:44,559 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:14:44,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:14:44,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:44,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:44,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:44,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:44,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:44,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:44,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:14:44,561 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:14:44,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:14:44,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:14:44,562 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:44,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:44,563 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_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f88e56db5d4a069a75f7d157c02a6d71e69f72bef3f2984433669539d06b3f44 [2023-11-19 04:14:44,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:44,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:44,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:44,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:44,951 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:44,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench/geo1-ll.c [2023-11-19 04:14:48,027 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:48,227 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:48,228 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/sv-benchmarks/c/nla-digbench/geo1-ll.c [2023-11-19 04:14:48,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/data/832c751db/a6408bb09b2b4a1a869b7b072353c875/FLAGbffb2c9ee [2023-11-19 04:14:48,252 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/data/832c751db/a6408bb09b2b4a1a869b7b072353c875 [2023-11-19 04:14:48,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:48,256 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:48,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:48,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:48,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:48,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e11e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48, skipping insertion in model container [2023-11-19 04:14:48,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,289 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:48,467 WARN L240 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_2555efd9-d868-4f5f-a405-14531e24ea4d/sv-benchmarks/c/nla-digbench/geo1-ll.c[546,559] [2023-11-19 04:14:48,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:48,515 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:48,536 WARN L240 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_2555efd9-d868-4f5f-a405-14531e24ea4d/sv-benchmarks/c/nla-digbench/geo1-ll.c[546,559] [2023-11-19 04:14:48,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:48,555 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:48,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48 WrapperNode [2023-11-19 04:14:48,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:48,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:48,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:48,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:48,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,586 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-19 04:14:48,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:48,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:48,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:48,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:48,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:48,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:48,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:48,607 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:48,608 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (1/1) ... [2023-11-19 04:14:48,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:48,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:48,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:48,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:14:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:14:48,781 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:48,785 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:48,953 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:48,981 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:48,982 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:48,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:48 BoogieIcfgContainer [2023-11-19 04:14:48,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:48,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:48,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:48,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:48,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:48" (1/3) ... [2023-11-19 04:14:48,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66052e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:48, skipping insertion in model container [2023-11-19 04:14:48,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:48" (2/3) ... [2023-11-19 04:14:48,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66052e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:48, skipping insertion in model container [2023-11-19 04:14:48,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:48" (3/3) ... [2023-11-19 04:14:48,997 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll.c [2023-11-19 04:14:49,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:49,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:49,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:49,068 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@5c9ffa30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:49,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:14:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:14:49,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:49,079 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:49,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:49,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1533116199, now seen corresponding path program 1 times [2023-11-19 04:14:49,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:49,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690180818] [2023-11-19 04:14:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:49,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:49,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:49,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686977782] [2023-11-19 04:14:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:49,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:49,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:49,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:49,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:14:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:49,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:14:49,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:49,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:49,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:49,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690180818] [2023-11-19 04:14:49,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686977782] [2023-11-19 04:14:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686977782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:49,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:49,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:14:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422958505] [2023-11-19 04:14:49,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:49,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:14:49,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:14:49,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:14:49,439 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:49,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:49,516 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2023-11-19 04:14:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:14:49,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-19 04:14:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:49,526 INFO L225 Difference]: With dead ends: 40 [2023-11-19 04:14:49,526 INFO L226 Difference]: Without dead ends: 25 [2023-11-19 04:14:49,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:14:49,533 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:49,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 50 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:14:49,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-19 04:14:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-11-19 04:14:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:14:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-19 04:14:49,575 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 13 [2023-11-19 04:14:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:49,575 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-19 04:14:49,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:14:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-19 04:14:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:14:49,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:49,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:49,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:14:49,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 04:14:49,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:49,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1734350740, now seen corresponding path program 1 times [2023-11-19 04:14:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157453710] [2023-11-19 04:14:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:49,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:49,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099243938] [2023-11-19 04:14:49,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:49,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:49,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:49,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:49,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:14:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:49,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:14:49,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:49,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:14:49,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157453710] [2023-11-19 04:14:49,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:49,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099243938] [2023-11-19 04:14:49,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099243938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:49,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:49,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:14:49,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247402965] [2023-11-19 04:14:49,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:49,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:14:49,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:49,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:14:49,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:14:49,963 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:14:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:50,019 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-11-19 04:14:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:14:50,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-19 04:14:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:50,020 INFO L225 Difference]: With dead ends: 32 [2023-11-19 04:14:50,021 INFO L226 Difference]: Without dead ends: 24 [2023-11-19 04:14:50,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:14:50,023 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:50,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:14:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-19 04:14:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-19 04:14:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:14:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-19 04:14:50,030 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2023-11-19 04:14:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:50,031 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-19 04:14:50,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:14:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-19 04:14:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:14:50,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:50,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:50,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:50,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:50,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:50,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:50,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1782314250, now seen corresponding path program 1 times [2023-11-19 04:14:50,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:50,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46934313] [2023-11-19 04:14:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:50,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:50,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129063937] [2023-11-19 04:14:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:50,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:50,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:50,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:50,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:14:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:50,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 04:14:50,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:50,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:50,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:50,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46934313] [2023-11-19 04:14:50,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:50,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129063937] [2023-11-19 04:14:50,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129063937] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 04:14:50,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:14:50,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-19 04:14:50,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130921605] [2023-11-19 04:14:50,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:50,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:14:50,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:50,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:14:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:14:50,951 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:14:51,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:51,102 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-11-19 04:14:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:14:51,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-19 04:14:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:51,107 INFO L225 Difference]: With dead ends: 30 [2023-11-19 04:14:51,107 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 04:14:51,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:14:51,109 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:51,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 42 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:14:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 04:14:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-19 04:14:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:14:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-11-19 04:14:51,124 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2023-11-19 04:14:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:51,124 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-11-19 04:14:51,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:14:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-11-19 04:14:51,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:14:51,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:51,126 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:51,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:51,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:51,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:51,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1905375811, now seen corresponding path program 1 times [2023-11-19 04:14:51,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:51,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962590311] [2023-11-19 04:14:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:51,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:51,341 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:14:51,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715701314] [2023-11-19 04:14:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:51,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:51,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:51,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:14:51,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:14:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:51,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 04:14:51,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:14:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:14:51,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:14:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:14:51,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:51,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962590311] [2023-11-19 04:14:51,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:14:51,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715701314] [2023-11-19 04:14:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715701314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:14:51,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630377180] [2023-11-19 04:14:51,744 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-19 04:14:51,744 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:14:51,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:14:51,753 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:14:51,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:14:55,019 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-19 04:14:55,081 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 62 for LOIs [2023-11-19 04:14:55,137 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:14:57,316 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '672#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-11-19 04:14:57,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:14:57,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:14:57,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2023-11-19 04:14:57,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457231150] [2023-11-19 04:14:57,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:14:57,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 04:14:57,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:57,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 04:14:57,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-11-19 04:14:57,320 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 04:14:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:57,522 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2023-11-19 04:14:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:14:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2023-11-19 04:14:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:57,524 INFO L225 Difference]: With dead ends: 26 [2023-11-19 04:14:57,524 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:14:57,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:14:57,526 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:57,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:14:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:14:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:14:57,528 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) [2023-11-19 04:14:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:14:57,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-11-19 04:14:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:57,528 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:14:57,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 04:14:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:14:57,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:14:57,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:14:57,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:14:57,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:14:57,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:14:57,808 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:14:57,808 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-11-19 04:14:57,808 INFO L902 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: true [2023-11-19 04:14:57,808 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1)) [2023-11-19 04:14:57,808 INFO L899 garLoopResultBuilder]: For program point L48-1(line 48) no Hoare annotation was computed. [2023-11-19 04:14:57,809 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:14:57,809 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 44) the Hoare annotation is: (and (= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|)) [2023-11-19 04:14:57,809 INFO L899 garLoopResultBuilder]: For program point L34-3(lines 34 44) no Hoare annotation was computed. [2023-11-19 04:14:57,809 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-11-19 04:14:57,809 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|)) [2023-11-19 04:14:57,809 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 44) no Hoare annotation was computed. [2023-11-19 04:14:57,809 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 14) the Hoare annotation is: true [2023-11-19 04:14:57,810 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2023-11-19 04:14:57,810 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2023-11-19 04:14:57,810 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2023-11-19 04:14:57,810 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2023-11-19 04:14:57,810 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2023-11-19 04:14:57,810 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 21) the Hoare annotation is: true [2023-11-19 04:14:57,811 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2023-11-19 04:14:57,814 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 04:14:57,816 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:14:57,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:14:57 BoogieIcfgContainer [2023-11-19 04:14:57,827 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:14:57,828 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:14:57,828 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:14:57,828 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:14:57,828 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:48" (3/4) ... [2023-11-19 04:14:57,830 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:14:57,834 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 04:14:57,834 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 04:14:57,838 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-19 04:14:57,838 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 04:14:57,838 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 04:14:57,838 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:14:57,935 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:14:57,935 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:14:57,936 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:14:57,936 INFO L158 Benchmark]: Toolchain (without parser) took 9679.95ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 116.9MB in the beginning and 93.3MB in the end (delta: 23.6MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2023-11-19 04:14:57,937 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory was 92.1MB in the beginning and 92.1MB in the end (delta: 77.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:57,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.69ms. Allocated memory is still 151.0MB. Free memory was 116.9MB in the beginning and 119.5MB in the end (delta: -2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 04:14:57,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.51ms. Allocated memory is still 151.0MB. Free memory was 119.5MB in the beginning and 118.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:14:57,938 INFO L158 Benchmark]: Boogie Preprocessor took 18.12ms. Allocated memory is still 151.0MB. Free memory was 118.2MB in the beginning and 117.5MB in the end (delta: 662.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:57,938 INFO L158 Benchmark]: RCFGBuilder took 379.73ms. Allocated memory is still 151.0MB. Free memory was 117.4MB in the beginning and 105.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:14:57,939 INFO L158 Benchmark]: TraceAbstraction took 8837.44ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 104.9MB in the beginning and 97.5MB in the end (delta: 7.4MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2023-11-19 04:14:57,939 INFO L158 Benchmark]: Witness Printer took 108.14ms. Allocated memory is still 182.5MB. Free memory was 97.5MB in the beginning and 93.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:14:57,941 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory was 92.1MB in the beginning and 92.1MB in the end (delta: 77.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.69ms. Allocated memory is still 151.0MB. Free memory was 116.9MB in the beginning and 119.5MB in the end (delta: -2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.51ms. Allocated memory is still 151.0MB. Free memory was 119.5MB in the beginning and 118.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.12ms. Allocated memory is still 151.0MB. Free memory was 118.2MB in the beginning and 117.5MB in the end (delta: 662.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 379.73ms. Allocated memory is still 151.0MB. Free memory was 117.4MB in the beginning and 105.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8837.44ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 104.9MB in the beginning and 97.5MB in the end (delta: 7.4MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. * Witness Printer took 108.14ms. Allocated memory is still 182.5MB. Free memory was 97.5MB in the beginning and 93.3MB 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: 18]: 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 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 44 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 41 HoareAnnotationTreeSize, 13 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 121 ConstructedInterpolants, 1 QuantifiedInterpolants, 444 SizeOfPredicates, 12 NumberOfNonLiveVariables, 286 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 37/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((x + y) == ((x * z) + 1)) && (1 <= c)) && (1 <= k)) RESULT: Ultimate proved your program to be correct! [2023-11-19 04:14:57,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2555efd9-d868-4f5f-a405-14531e24ea4d/bin/utaipan-verify-t7M7D8N6sZ/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