./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.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_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/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_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/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_42b51a59-8db7-4733-a93f-725de0c71874/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 0477687fecbd3170f65e2eb11926275d6b3232cae024dd47071f89d509b612eb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:09:46,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:09:46,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:09:46,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:09:46,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:09:46,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:09:46,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:09:46,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:09:46,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:09:46,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:09:46,175 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:09:46,175 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:09:46,176 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:09:46,177 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:09:46,178 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:09:46,178 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:09:46,179 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:09:46,179 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:09:46,179 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:09:46,180 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:09:46,180 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:09:46,181 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:09:46,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:09:46,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:09:46,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:09:46,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:09:46,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:09:46,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:09:46,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:09:46,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:09:46,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:09:46,186 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:09:46,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:09:46,186 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:09:46,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:09:46,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:09:46,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:09:46,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:09:46,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:09:46,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:09:46,188 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:09:46,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:09:46,188 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:09:46,189 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:09:46,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:09:46,189 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0477687fecbd3170f65e2eb11926275d6b3232cae024dd47071f89d509b612eb [2023-11-19 05:09:46,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:09:46,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:09:46,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:09:46,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:09:46,520 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:09:46,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2023-11-19 05:09:49,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:09:49,979 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:09:49,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2023-11-19 05:09:49,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/data/3a5ca4901/e64c350cac874c089a59a6562801a994/FLAG6b9efc971 [2023-11-19 05:09:50,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/data/3a5ca4901/e64c350cac874c089a59a6562801a994 [2023-11-19 05:09:50,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:09:50,020 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:09:50,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:09:50,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:09:50,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:09:50,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285c1418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50, skipping insertion in model container [2023-11-19 05:09:50,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:09:50,259 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_42b51a59-8db7-4733-a93f-725de0c71874/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c[546,559] [2023-11-19 05:09:50,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:09:50,297 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:09:50,316 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_42b51a59-8db7-4733-a93f-725de0c71874/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c[546,559] [2023-11-19 05:09:50,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:09:50,357 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:09:50,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50 WrapperNode [2023-11-19 05:09:50,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:09:50,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:09:50,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:09:50,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:09:50,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,403 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-11-19 05:09:50,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:09:50,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:09:50,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:09:50,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:09:50,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:09:50,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:09:50,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:09:50,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:09:50,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (1/1) ... [2023-11-19 05:09:50,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:09:50,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:50,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:09:50,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:09:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:09:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:09:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:09:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:09:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:09:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:09:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:09:50,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:09:50,620 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:09:50,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:09:50,811 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:09:50,843 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:09:50,843 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:09:50,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:50 BoogieIcfgContainer [2023-11-19 05:09:50,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:09:50,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:09:50,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:09:50,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:09:50,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:09:50" (1/3) ... [2023-11-19 05:09:50,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc1aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:50, skipping insertion in model container [2023-11-19 05:09:50,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:50" (2/3) ... [2023-11-19 05:09:50,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc1aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:50, skipping insertion in model container [2023-11-19 05:09:50,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:50" (3/3) ... [2023-11-19 05:09:50,861 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound2.c [2023-11-19 05:09:50,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:09:50,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:09:50,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:09:50,953 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;@250c863a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:09:50,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:09:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:09:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:09:50,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:50,971 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:50,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:50,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash -149589660, now seen corresponding path program 1 times [2023-11-19 05:09:50,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:50,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987157493] [2023-11-19 05:09:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:51,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:09:51,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243111585] [2023-11-19 05:09:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:51,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:51,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:09:51,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:09:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:51,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:09:51,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:09:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:09:51,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:09:51,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:51,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987157493] [2023-11-19 05:09:51,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:09:51,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243111585] [2023-11-19 05:09:51,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243111585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:51,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:51,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:09:51,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830539062] [2023-11-19 05:09:51,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:51,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:09:51,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:51,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:09:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:09:51,486 INFO L87 Difference]: Start difference. First operand has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 05:09:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:51,588 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2023-11-19 05:09:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:09:51,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2023-11-19 05:09:51,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:51,601 INFO L225 Difference]: With dead ends: 43 [2023-11-19 05:09:51,601 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 05:09:51,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 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 05:09:51,609 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:51,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 70 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:09:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 05:09:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-11-19 05:09:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:09:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-19 05:09:51,689 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2023-11-19 05:09:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:51,691 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-19 05:09:51,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 05:09:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-19 05:09:51,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:09:51,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:51,699 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:51,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:09:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:09:51,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:51,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2098605580, now seen corresponding path program 1 times [2023-11-19 05:09:51,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:51,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953030488] [2023-11-19 05:09:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:51,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:09:51,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724954059] [2023-11-19 05:09:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:51,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:51,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:51,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:09:51,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:09:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:52,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:09:52,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:09:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:09:52,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:09:52,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953030488] [2023-11-19 05:09:52,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:09:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724954059] [2023-11-19 05:09:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724954059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:52,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:52,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:09:52,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279266079] [2023-11-19 05:09:52,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:52,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:09:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:09:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:09:52,209 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 05:09:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:52,297 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2023-11-19 05:09:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:09:52,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2023-11-19 05:09:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:52,300 INFO L225 Difference]: With dead ends: 35 [2023-11-19 05:09:52,300 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 05:09:52,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:09:52,303 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:52,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 82 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:09:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 05:09:52,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-19 05:09:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:09:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-11-19 05:09:52,315 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 27 [2023-11-19 05:09:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:52,315 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-11-19 05:09:52,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 05:09:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-11-19 05:09:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:09:52,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:52,317 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:52,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:09:52,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:52,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:52,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2146569090, now seen corresponding path program 1 times [2023-11-19 05:09:52,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:52,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410187750] [2023-11-19 05:09:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:52,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:52,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:09:52,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455503522] [2023-11-19 05:09:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:52,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:52,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:52,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:09:52,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:09:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:52,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 05:09:52,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:09:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:09:52,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:09:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:09:53,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:53,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410187750] [2023-11-19 05:09:53,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:09:53,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455503522] [2023-11-19 05:09:53,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455503522] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:09:53,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:09:53,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-19 05:09:53,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013289981] [2023-11-19 05:09:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:53,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:09:53,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:53,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:09:53,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:09:53,283 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 05:09:53,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:53,362 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2023-11-19 05:09:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:09:53,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2023-11-19 05:09:53,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:53,364 INFO L225 Difference]: With dead ends: 33 [2023-11-19 05:09:53,364 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 05:09:53,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 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 05:09:53,367 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:53,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:09:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 05:09:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-19 05:09:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:09:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-19 05:09:53,377 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 27 [2023-11-19 05:09:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:53,378 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-19 05:09:53,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 05:09:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-19 05:09:53,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:09:53,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:53,381 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:53,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:09:53,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:53,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:53,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:53,605 INFO L85 PathProgramCache]: Analyzing trace with hash 639342126, now seen corresponding path program 1 times [2023-11-19 05:09:53,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:53,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576810110] [2023-11-19 05:09:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:53,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:53,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:09:53,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725188524] [2023-11-19 05:09:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:53,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:53,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:53,653 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:09:53,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:09:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:53,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 05:09:53,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:09:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:09:53,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:09:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 05:09:54,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:54,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576810110] [2023-11-19 05:09:54,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:09:54,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725188524] [2023-11-19 05:09:54,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725188524] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:09:54,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333738972] [2023-11-19 05:09:54,056 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-11-19 05:09:54,056 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:09:54,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:09:54,065 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:09:54,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:09:55,691 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 109 for LOIs [2023-11-19 05:09:56,157 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:09:56,159 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:10:07,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1333738972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:07,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:10:07,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11, 7] total 27 [2023-11-19 05:10:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033191464] [2023-11-19 05:10:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:07,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 05:10:07,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:10:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 05:10:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-11-19 05:10:07,215 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:10:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:08,589 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-11-19 05:10:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:10:08,589 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 34 [2023-11-19 05:10:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:08,590 INFO L225 Difference]: With dead ends: 40 [2023-11-19 05:10:08,590 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:10:08,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-11-19 05:10:08,592 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:10:08,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 05:10:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:10:08,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:10:08,594 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 05:10:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:10:08,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2023-11-19 05:10:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:08,595 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:10:08,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:10:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:10:08,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:10:08,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:10:08,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:10:08,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:10:08,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:10:09,826 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:10:09,827 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2) (<= |ULTIMATE.start_main_~z~0#1| 2) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (<= 1 |ULTIMATE.start_main_~z~0#1|))) [2023-11-19 05:10:09,827 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1)) [2023-11-19 05:10:09,827 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-11-19 05:10:09,827 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:10:09,827 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse12 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= 1 |#StackHeapBarrier|)) (.cse2 (<= |ULTIMATE.start_main_~z~0#1| 2)) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= (select |#valid| 3) 1)) (.cse5 (= (select |#valid| 1) 1)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| 2) 1)) (.cse8 (= (select .cse12 0) 48)) (.cse9 (= 10 (select |#length| 2))) (.cse10 (= (select .cse12 1) 0)) (.cse11 (<= 1 |ULTIMATE.start_main_~z~0#1|))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) .cse3 .cse4 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse5 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (= 2 |ULTIMATE.start_main_~k~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~k~0#1| 2) (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~x~0#1| 1) .cse5 .cse6 (<= 1 |ULTIMATE.start_main_~k~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11)))) [2023-11-19 05:10:09,827 INFO L899 garLoopResultBuilder]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2023-11-19 05:10:09,828 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-11-19 05:10:09,828 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~z~0#1| 2) (= 2 (select |#length| 1)) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))) [2023-11-19 05:10:09,828 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2) (<= |ULTIMATE.start_main_~z~0#1| 2) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))) [2023-11-19 05:10:09,828 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-11-19 05:10:09,828 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-11-19 05:10:09,829 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse12 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= 1 |#StackHeapBarrier|)) (.cse2 (<= |ULTIMATE.start_main_~z~0#1| 2)) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= (select |#valid| 3) 1)) (.cse5 (= (select |#valid| 1) 1)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| 2) 1)) (.cse8 (= (select .cse12 0) 48)) (.cse9 (= 10 (select |#length| 2))) (.cse10 (= (select .cse12 1) 0)) (.cse11 (<= 1 |ULTIMATE.start_main_~z~0#1|))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) .cse3 .cse4 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse5 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~c~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (= 2 |ULTIMATE.start_main_~k~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~k~0#1| 2) (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~x~0#1| 1) .cse5 .cse6 (<= 1 |ULTIMATE.start_main_~k~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11)))) [2023-11-19 05:10:09,829 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 36 46) no Hoare annotation was computed. [2023-11-19 05:10:09,829 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 14) the Hoare annotation is: true [2023-11-19 05:10:09,829 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2023-11-19 05:10:09,829 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2023-11-19 05:10:09,830 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2023-11-19 05:10:09,830 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2023-11-19 05:10:09,830 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2023-11-19 05:10:09,830 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 21) the Hoare annotation is: true [2023-11-19 05:10:09,830 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2023-11-19 05:10:09,837 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 05:10:09,839 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:10:09,854 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 05:10:09,858 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 05:10:09,858 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 05:10:09,858 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 05:10:09,859 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 05:10:09,859 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 05:10:09,859 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 05:10:09,859 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 05:10:09,860 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 05:10:09,860 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 05:10:09,860 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 05:10:09,861 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 05:10:09,861 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 05:10:09,861 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 05:10:09,862 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 05:10:09,862 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 05:10:09,862 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 05:10:09,862 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 05:10:09,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:10:09 BoogieIcfgContainer [2023-11-19 05:10:09,865 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:10:09,865 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:10:09,865 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:10:09,866 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:10:09,866 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:50" (3/4) ... [2023-11-19 05:10:09,868 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:10:09,871 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 05:10:09,871 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 05:10:09,876 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-19 05:10:09,877 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 05:10:09,877 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:10:09,877 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:10:09,992 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:10:09,992 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:10:09,992 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:10:09,993 INFO L158 Benchmark]: Toolchain (without parser) took 19973.17ms. Allocated memory was 144.7MB in the beginning and 178.3MB in the end (delta: 33.6MB). Free memory was 99.8MB in the beginning and 146.3MB in the end (delta: -46.5MB). Peak memory consumption was 92.3MB. Max. memory is 16.1GB. [2023-11-19 05:10:09,993 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 144.7MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:10:09,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.30ms. Allocated memory is still 144.7MB. Free memory was 99.4MB in the beginning and 88.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:10:09,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.09ms. Allocated memory is still 144.7MB. Free memory was 88.8MB in the beginning and 87.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:10:09,995 INFO L158 Benchmark]: Boogie Preprocessor took 44.91ms. Allocated memory is still 144.7MB. Free memory was 87.5MB in the beginning and 86.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:09,995 INFO L158 Benchmark]: RCFGBuilder took 399.41ms. Allocated memory is still 144.7MB. Free memory was 86.4MB in the beginning and 75.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:10:09,996 INFO L158 Benchmark]: TraceAbstraction took 19011.86ms. Allocated memory was 144.7MB in the beginning and 178.3MB in the end (delta: 33.6MB). Free memory was 74.2MB in the beginning and 46.3MB in the end (delta: 27.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2023-11-19 05:10:09,996 INFO L158 Benchmark]: Witness Printer took 127.10ms. Allocated memory is still 178.3MB. Free memory was 46.3MB in the beginning and 146.3MB in the end (delta: -100.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:09,999 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 144.7MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.30ms. Allocated memory is still 144.7MB. Free memory was 99.4MB in the beginning and 88.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.09ms. Allocated memory is still 144.7MB. Free memory was 88.8MB in the beginning and 87.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.91ms. Allocated memory is still 144.7MB. Free memory was 87.5MB in the beginning and 86.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 399.41ms. Allocated memory is still 144.7MB. Free memory was 86.4MB in the beginning and 75.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 19011.86ms. Allocated memory was 144.7MB in the beginning and 178.3MB in the end (delta: 33.6MB). Free memory was 74.2MB in the beginning and 46.3MB in the end (delta: 27.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Witness Printer took 127.10ms. Allocated memory is still 178.3MB. Free memory was 46.3MB in the beginning and 146.3MB in the end (delta: -100.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * 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, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.9s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 191 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 226 IncrementalHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 63 mSDtfsCounter, 226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 148 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 19 PreInvPairs, 25 NumberOfFragments, 571 HoareAnnotationTreeSize, 19 FomulaSimplifications, 170 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 2226 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 163 ConstructedInterpolants, 1 QuantifiedInterpolants, 486 SizeOfPredicates, 12 NumberOfNonLiveVariables, 358 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 97/104 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 24, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 19, TOOLS_POST_TIME: 0.8s, TOOLS_POST_CALL_APPLICATIONS: 20, TOOLS_POST_CALL_TIME: 0.6s, TOOLS_POST_RETURN_APPLICATIONS: 14, TOOLS_POST_RETURN_TIME: 0.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 53, TOOLS_QUANTIFIERELIM_TIME: 1.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 69, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 20, DOMAIN_JOIN_TIME: 0.3s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 24, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 14, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 245, DAG_COMPRESSION_RETAINED_NODES: 66, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((z <= 2) && (y == (z * z))) && (c <= 2)) && (x == (z + 1))) && (k <= c)) && (1 <= z)) && (2 == k)) || (((((((y == z) && (k <= 2)) && (c == 1)) && (z <= 2)) && (x == 1)) && (1 <= k)) && (1 <= z))) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:10:10,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b51a59-8db7-4733-a93f-725de0c71874/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