./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire --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 a053a782decb11d2f285c3ec51c61736c730fd1e4c1a5a335f84feb7be146afe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:29,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:29,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:22:29,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:29,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:29,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:29,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:29,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:29,426 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:29,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:29,432 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:29,432 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:29,433 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:29,434 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:29,435 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:29,435 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:29,435 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:29,436 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:29,436 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:29,437 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:29,438 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:29,438 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:29,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:29,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:29,440 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:29,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:29,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:29,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:29,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:29,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:29,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:29,444 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:29,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:29,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:29,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:29,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:29,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:29,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:29,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:29,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:29,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:29,446 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:29,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:29,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:29,447 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:29,448 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:29,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:29,448 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_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a053a782decb11d2f285c3ec51c61736c730fd1e4c1a5a335f84feb7be146afe [2023-11-23 21:22:29,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:29,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:29,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:29,873 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:29,875 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:29,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c [2023-11-23 21:22:32,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:33,166 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:33,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c [2023-11-23 21:22:33,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/data/928e450e3/ee5feaee90ee4077ad7fd7495a89826a/FLAG872192c93 [2023-11-23 21:22:33,191 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/data/928e450e3/ee5feaee90ee4077ad7fd7495a89826a [2023-11-23 21:22:33,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:33,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:33,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:33,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:33,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:33,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6340271f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33, skipping insertion in model container [2023-11-23 21:22:33,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,231 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:33,461 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_1908deb4-3e87-471b-9dbe-bf75196d3be9/sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2023-11-23 21:22:33,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:33,480 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:33,504 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_1908deb4-3e87-471b-9dbe-bf75196d3be9/sv-benchmarks/c/loop-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2023-11-23 21:22:33,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:33,521 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:33,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33 WrapperNode [2023-11-23 21:22:33,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:33,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:33,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:33,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:33,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,551 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2023-11-23 21:22:33,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:33,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:33,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:33,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:33,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,565 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:33,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:33,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:33,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:33,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (1/1) ... [2023-11-23 21:22:33,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:33,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:33,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:33,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:33,699 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:33,702 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:33,829 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:33,850 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:33,850 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:22:33,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:33 BoogieIcfgContainer [2023-11-23 21:22:33,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:33,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:33,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:33,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:33,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:33" (1/3) ... [2023-11-23 21:22:33,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9561cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:33, skipping insertion in model container [2023-11-23 21:22:33,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:33" (2/3) ... [2023-11-23 21:22:33,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9561cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:33, skipping insertion in model container [2023-11-23 21:22:33,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:33" (3/3) ... [2023-11-23 21:22:33,863 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.c [2023-11-23 21:22:33,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:33,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:33,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:33,947 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;@1f935ca4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:33,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 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) [2023-11-23 21:22:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:22:33,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:33,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:33,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:33,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash 79507751, now seen corresponding path program 1 times [2023-11-23 21:22:33,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:33,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218725941] [2023-11-23 21:22:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:33,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:34,130 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:22:34,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319777030] [2023-11-23 21:22:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:34,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:34,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:34,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:34,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:22:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:34,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-23 21:22:34,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:34,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:34,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:34,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218725941] [2023-11-23 21:22:34,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:22:34,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319777030] [2023-11-23 21:22:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319777030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:34,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:22:34,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890490013] [2023-11-23 21:22:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:34,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:22:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:22:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:22:34,729 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 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) Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-11-23 21:22:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:34,915 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2023-11-23 21:22:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:22:34,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) Word has length 11 [2023-11-23 21:22:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:34,926 INFO L225 Difference]: With dead ends: 26 [2023-11-23 21:22:34,926 INFO L226 Difference]: Without dead ends: 13 [2023-11-23 21:22:34,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:22:34,933 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:34,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 20 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-23 21:22:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-23 21:22:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2023-11-23 21:22:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-23 21:22:34,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2023-11-23 21:22:34,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:34,962 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-23 21:22:34,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-11-23 21:22:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-23 21:22:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:22:34,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:34,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:34,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:35,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:22:35,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:35,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1830289474, now seen corresponding path program 1 times [2023-11-23 21:22:35,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:35,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030404516] [2023-11-23 21:22:35,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:35,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:35,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:22:35,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976479578] [2023-11-23 21:22:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:35,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:35,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:35,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:35,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:22:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:35,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 21:22:35,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:35,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:35,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:35,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030404516] [2023-11-23 21:22:35,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:22:35,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976479578] [2023-11-23 21:22:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976479578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:35,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954849607] [2023-11-23 21:22:35,660 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-11-23 21:22:35,660 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:22:35,664 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:22:35,670 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:22:35,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:22:36,069 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:22:36,838 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '177#(and (<= 15 |ULTIMATE.start_main_~main__sum~0#1|) (<= 1 |#StackHeapBarrier|) (not (= (+ |ULTIMATE.start_main_~main__n~0#1| (* |ULTIMATE.start_main_~main__n~0#1| |ULTIMATE.start_main_~main__n~0#1|)) (* 2 |ULTIMATE.start_main_~main__sum~0#1|))) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (<= (+ |ULTIMATE.start_main_~main__n~0#1| 1) |ULTIMATE.start_main_~main__i~0#1|) (= ~__return_96~0 0) (<= |ULTIMATE.start_main_~main__n~0#1| 1000) (<= 5 |ULTIMATE.start_main_~main__n~0#1|) (= |ULTIMATE.start_main_~__tmp_1~0#1| 0) (= ~__return_main~0 0))' at error location [2023-11-23 21:22:36,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:22:36,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:22:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 13 [2023-11-23 21:22:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23820576] [2023-11-23 21:22:36,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:22:36,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:22:36,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:36,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:22:36,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:22:36,846 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-11-23 21:22:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:37,163 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2023-11-23 21:22:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:22:37,164 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) Word has length 12 [2023-11-23 21:22:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:37,165 INFO L225 Difference]: With dead ends: 15 [2023-11-23 21:22:37,165 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:22:37,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:22:37,167 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:37,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:22:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:22:37,169 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) [2023-11-23 21:22:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:22:37,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2023-11-23 21:22:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:37,170 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:22:37,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-11-23 21:22:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:22:37,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:22:37,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:22:37,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:37,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:37,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:22:37,380 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 103) no Hoare annotation was computed. [2023-11-23 21:22:37,381 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:22:37,381 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 104) no Hoare annotation was computed. [2023-11-23 21:22:37,381 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 105) no Hoare annotation was computed. [2023-11-23 21:22:37,381 INFO L899 garLoopResultBuilder]: For program point $Ultimate##16(lines 54 78) no Hoare annotation was computed. [2023-11-23 21:22:37,381 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:22:37,381 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 13 106) no Hoare annotation was computed. [2023-11-23 21:22:37,382 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-23 21:22:37,382 INFO L899 garLoopResultBuilder]: For program point L67(lines 67 76) no Hoare annotation was computed. [2023-11-23 21:22:37,382 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 69) no Hoare annotation was computed. [2023-11-23 21:22:37,382 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 83) no Hoare annotation was computed. [2023-11-23 21:22:37,382 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 88) no Hoare annotation was computed. [2023-11-23 21:22:37,382 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 93) no Hoare annotation was computed. [2023-11-23 21:22:37,383 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 98) no Hoare annotation was computed. [2023-11-23 21:22:37,386 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:22:37,388 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:22:37,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:22:37 BoogieIcfgContainer [2023-11-23 21:22:37,393 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:22:37,394 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:22:37,394 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:22:37,394 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:22:37,394 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:33" (3/4) ... [2023-11-23 21:22:37,396 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:22:37,405 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-23 21:22:37,405 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 21:22:37,405 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:22:37,406 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:22:37,512 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:22:37,513 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:22:37,513 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:22:37,514 INFO L158 Benchmark]: Toolchain (without parser) took 4318.02ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 93.1MB in the beginning and 110.5MB in the end (delta: -17.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:37,514 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:37,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.14ms. Allocated memory is still 138.4MB. Free memory was 93.1MB in the beginning and 102.0MB in the end (delta: -8.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:37,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.93ms. Allocated memory is still 138.4MB. Free memory was 102.0MB in the beginning and 99.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:37,515 INFO L158 Benchmark]: Boogie Preprocessor took 19.10ms. Allocated memory is still 138.4MB. Free memory was 99.9MB in the beginning and 99.6MB in the end (delta: 310.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:37,516 INFO L158 Benchmark]: RCFGBuilder took 280.45ms. Allocated memory is still 138.4MB. Free memory was 98.7MB in the beginning and 87.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:22:37,516 INFO L158 Benchmark]: TraceAbstraction took 3537.87ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 87.3MB in the beginning and 114.7MB in the end (delta: -27.3MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:37,517 INFO L158 Benchmark]: Witness Printer took 119.58ms. Allocated memory is still 176.2MB. Free memory was 114.7MB in the beginning and 110.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:22:37,519 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.14ms. Allocated memory is still 138.4MB. Free memory was 93.1MB in the beginning and 102.0MB in the end (delta: -8.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.93ms. Allocated memory is still 138.4MB. Free memory was 102.0MB in the beginning and 99.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.10ms. Allocated memory is still 138.4MB. Free memory was 99.9MB in the beginning and 99.6MB in the end (delta: 310.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 280.45ms. Allocated memory is still 138.4MB. Free memory was 98.7MB in the beginning and 87.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3537.87ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 87.3MB in the beginning and 114.7MB in the end (delta: -27.3MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 119.58ms. Allocated memory is still 176.2MB. Free memory was 114.7MB in the beginning and 110.5MB 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: 69]: 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 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 214 IncrementalHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 6 mSDtfsCounter, 214 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 22, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 9 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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 RESULT: Ultimate proved your program to be correct! [2023-11-23 21:22:37,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1908deb4-3e87-471b-9dbe-bf75196d3be9/bin/utaipan-verify-mE87zJ7Ire/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