./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX --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 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:43,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:43,224 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:56:43,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:43,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:43,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:43,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:43,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:43,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:43,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:43,262 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:43,263 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:43,264 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:43,264 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:43,265 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:43,265 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:43,266 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:43,266 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:43,267 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:43,267 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:43,268 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:43,269 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:43,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:43,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:43,271 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:56:43,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:43,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:56:43,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:43,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:43,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:43,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:43,274 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:56:43,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:43,275 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:43,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:43,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:43,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:43,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:43,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:43,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:43,278 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:43,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:43,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:43,281 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:43,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:43,282 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_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d [2023-11-12 00:56:43,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:43,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:43,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:43,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:43,631 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:43,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2023-11-12 00:56:46,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:47,084 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:47,084 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2023-11-12 00:56:47,093 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/data/030c80e23/fa928b1462994d44b8247369283ae34b/FLAGf8e436b10 [2023-11-12 00:56:47,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/data/030c80e23/fa928b1462994d44b8247369283ae34b [2023-11-12 00:56:47,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:47,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:47,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:47,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:47,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:47,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef84f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47, skipping insertion in model container [2023-11-12 00:56:47,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,145 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:47,335 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_fd9dce33-9263-4040-b443-e0c0c622ccc5/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2023-11-12 00:56:47,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:47,368 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:47,381 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_fd9dce33-9263-4040-b443-e0c0c622ccc5/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2023-11-12 00:56:47,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:47,405 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:47,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47 WrapperNode [2023-11-12 00:56:47,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:47,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:47,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:47,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:47,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,441 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-11-12 00:56:47,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:47,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:47,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:47,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:47,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:47,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:47,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:47,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:47,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (1/1) ... [2023-11-12 00:56:47,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:47,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:47,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:47,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:56:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:56:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:47,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:56:47,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:56:47,624 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:47,626 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:47,791 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:47,821 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:47,822 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:56:47,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:47 BoogieIcfgContainer [2023-11-12 00:56:47,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:47,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:47,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:47,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:47,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:47" (1/3) ... [2023-11-12 00:56:47,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119468c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:47, skipping insertion in model container [2023-11-12 00:56:47,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:47" (2/3) ... [2023-11-12 00:56:47,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119468c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:47, skipping insertion in model container [2023-11-12 00:56:47,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:47" (3/3) ... [2023-11-12 00:56:47,842 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2023-11-12 00:56:47,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:47,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:56:47,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:47,911 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;@2067d838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:47,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:56:47,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:56:47,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:56:47,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:47,925 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:47,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:47,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1646389938, now seen corresponding path program 1 times [2023-11-12 00:56:47,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:47,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376887038] [2023-11-12 00:56:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:47,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:48,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383857763] [2023-11-12 00:56:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:48,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:48,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:48,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:48,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:56:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:48,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 00:56:48,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:56:48,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:56:48,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:48,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376887038] [2023-11-12 00:56:48,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:48,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383857763] [2023-11-12 00:56:48,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383857763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:48,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:48,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:56:48,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587110550] [2023-11-12 00:56:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:48,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:56:48,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:56:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:56:48,494 INFO L87 Difference]: Start difference. First operand has 29 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:56:48,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:48,676 INFO L93 Difference]: Finished difference Result 60 states and 97 transitions. [2023-11-12 00:56:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:56:48,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2023-11-12 00:56:48,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:48,686 INFO L225 Difference]: With dead ends: 60 [2023-11-12 00:56:48,687 INFO L226 Difference]: Without dead ends: 36 [2023-11-12 00:56:48,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:56:48,693 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:48,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 126 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:56:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-12 00:56:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2023-11-12 00:56:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 00:56:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-11-12 00:56:48,739 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 17 [2023-11-12 00:56:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:48,740 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-11-12 00:56:48,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 00:56:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-11-12 00:56:48,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:56:48,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:48,742 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:48,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:48,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:56:48,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:48,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash -849077806, now seen corresponding path program 1 times [2023-11-12 00:56:48,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:48,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760023179] [2023-11-12 00:56:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:48,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:48,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461055722] [2023-11-12 00:56:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:48,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:48,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:48,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:48,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:56:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:49,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 00:56:49,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:56:49,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:56:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:56:49,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760023179] [2023-11-12 00:56:49,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461055722] [2023-11-12 00:56:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461055722] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:56:49,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:56:49,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-11-12 00:56:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768433873] [2023-11-12 00:56:49,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:56:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:56:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:56:49,361 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 00:56:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:49,490 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2023-11-12 00:56:49,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:56:49,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2023-11-12 00:56:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:49,495 INFO L225 Difference]: With dead ends: 50 [2023-11-12 00:56:49,495 INFO L226 Difference]: Without dead ends: 47 [2023-11-12 00:56:49,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:56:49,498 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:49,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 98 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:56:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-12 00:56:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-11-12 00:56:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 00:56:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-11-12 00:56:49,518 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 22 [2023-11-12 00:56:49,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:49,519 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-11-12 00:56:49,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 00:56:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-11-12 00:56:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 00:56:49,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:49,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:49,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:49,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:49,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:49,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1967169097, now seen corresponding path program 1 times [2023-11-12 00:56:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:49,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957327060] [2023-11-12 00:56:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:49,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:49,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:49,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711576415] [2023-11-12 00:56:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:49,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:49,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:49,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:49,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:56:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:49,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-12 00:56:49,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 00:56:50,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:56:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 00:56:50,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:50,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957327060] [2023-11-12 00:56:50,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:50,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711576415] [2023-11-12 00:56:50,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711576415] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:56:50,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:56:50,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-11-12 00:56:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111647249] [2023-11-12 00:56:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:50,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:56:50,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:56:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:56:50,306 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:56:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:50,382 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2023-11-12 00:56:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:56:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2023-11-12 00:56:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:50,387 INFO L225 Difference]: With dead ends: 52 [2023-11-12 00:56:50,387 INFO L226 Difference]: Without dead ends: 50 [2023-11-12 00:56:50,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:56:50,391 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:50,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:56:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-12 00:56:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-12 00:56:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 00:56:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2023-11-12 00:56:50,415 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 29 [2023-11-12 00:56:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:50,415 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2023-11-12 00:56:50,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 00:56:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2023-11-12 00:56:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 00:56:50,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:50,417 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:50,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:50,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:50,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:50,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash 927902903, now seen corresponding path program 1 times [2023-11-12 00:56:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085128990] [2023-11-12 00:56:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:50,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:50,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117725546] [2023-11-12 00:56:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:50,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:50,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:50,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:50,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:56:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:50,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 00:56:50,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:56:50,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:56:50,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:50,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085128990] [2023-11-12 00:56:50,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117725546] [2023-11-12 00:56:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117725546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:50,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:50,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:56:50,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157490554] [2023-11-12 00:56:50,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:50,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:56:50,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:50,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:56:50,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:56:50,794 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 00:56:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:50,930 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2023-11-12 00:56:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:56:50,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 39 [2023-11-12 00:56:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:50,932 INFO L225 Difference]: With dead ends: 56 [2023-11-12 00:56:50,933 INFO L226 Difference]: Without dead ends: 54 [2023-11-12 00:56:50,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:56:50,934 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:50,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 124 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:56:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-12 00:56:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-12 00:56:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 00:56:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-11-12 00:56:50,950 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 39 [2023-11-12 00:56:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:50,951 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-11-12 00:56:50,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 00:56:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-11-12 00:56:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-12 00:56:50,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:50,953 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:50,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:51,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:51,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:51,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:51,159 INFO L85 PathProgramCache]: Analyzing trace with hash 794028461, now seen corresponding path program 1 times [2023-11-12 00:56:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710599724] [2023-11-12 00:56:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:51,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:51,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221769682] [2023-11-12 00:56:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:51,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:51,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:51,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:56:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:51,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 00:56:51,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-12 00:56:51,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:56:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-12 00:56:51,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710599724] [2023-11-12 00:56:51,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221769682] [2023-11-12 00:56:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221769682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:56:51,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432667212] [2023-11-12 00:56:51,500 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-12 00:56:51,500 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:56:51,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:56:51,510 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:56:51,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:56:52,756 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-11-12 00:56:52,775 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-12 00:56:52,777 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:56:53,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [432667212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:53,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:56:53,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9, 7] total 24 [2023-11-12 00:56:53,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15033018] [2023-11-12 00:56:53,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:53,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 00:56:53,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 00:56:53,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:56:53,858 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-12 00:56:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:54,237 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2023-11-12 00:56:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:56:54,238 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 45 [2023-11-12 00:56:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:54,240 INFO L225 Difference]: With dead ends: 80 [2023-11-12 00:56:54,241 INFO L226 Difference]: Without dead ends: 78 [2023-11-12 00:56:54,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:56:54,244 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:54,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 58 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:56:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-12 00:56:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-11-12 00:56:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 47 states have internal predecessors, (50), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 00:56:54,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2023-11-12 00:56:54,293 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 45 [2023-11-12 00:56:54,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:54,296 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2023-11-12 00:56:54,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-12 00:56:54,296 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2023-11-12 00:56:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 00:56:54,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:54,300 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:54,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-12 00:56:54,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:54,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:54,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1669435945, now seen corresponding path program 1 times [2023-11-12 00:56:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956872848] [2023-11-12 00:56:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:54,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:54,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289420728] [2023-11-12 00:56:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:54,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:54,560 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:54,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:56:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:54,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 00:56:54,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-12 00:56:54,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:56:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-12 00:56:55,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:55,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956872848] [2023-11-12 00:56:55,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289420728] [2023-11-12 00:56:55,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289420728] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:56:55,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:56:55,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-12 00:56:55,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114832965] [2023-11-12 00:56:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:55,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:56:55,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:55,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:56:55,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:56:55,090 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-12 00:56:55,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:55,403 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2023-11-12 00:56:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:56:55,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 52 [2023-11-12 00:56:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:55,407 INFO L225 Difference]: With dead ends: 82 [2023-11-12 00:56:55,407 INFO L226 Difference]: Without dead ends: 79 [2023-11-12 00:56:55,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:56:55,408 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:55,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 90 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:56:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-12 00:56:55,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-12 00:56:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 49 states have internal predecessors, (52), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 00:56:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2023-11-12 00:56:55,438 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 52 [2023-11-12 00:56:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:55,438 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2023-11-12 00:56:55,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-12 00:56:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2023-11-12 00:56:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 00:56:55,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:55,440 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:55,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:56:55,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:55,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:55,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash 903485255, now seen corresponding path program 1 times [2023-11-12 00:56:55,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:55,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674065056] [2023-11-12 00:56:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:55,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:55,664 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:56:55,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895245375] [2023-11-12 00:56:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:55,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:56:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:55,666 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:56:55,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:56:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:55,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 00:56:55,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:56:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-12 00:56:55,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:56:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-12 00:56:55,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:55,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674065056] [2023-11-12 00:56:55,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:56:55,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895245375] [2023-11-12 00:56:55,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895245375] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:56:55,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [489582879] [2023-11-12 00:56:55,930 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-12 00:56:55,930 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:56:55,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:56:55,931 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:56:55,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:56:58,259 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-12 00:56:58,264 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-12 00:56:58,268 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:56:59,846 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2619#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-11-12 00:56:59,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:56:59,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:56:59,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-11-12 00:56:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137052258] [2023-11-12 00:56:59,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:56:59,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:56:59,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:56:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:56:59,850 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-12 00:57:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:00,061 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2023-11-12 00:57:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:57:00,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 68 [2023-11-12 00:57:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:00,066 INFO L225 Difference]: With dead ends: 79 [2023-11-12 00:57:00,066 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:57:00,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 168 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2023-11-12 00:57:00,069 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:00,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 132 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:57:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:57:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:57:00,071 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) [2023-11-12 00:57:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:57:00,071 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2023-11-12 00:57:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:00,071 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:57:00,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-12 00:57:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:57:00,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:57:00,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:57:00,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:57:00,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:57:00,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:57:02,201 INFO L899 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2023-11-12 00:57:02,201 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-11-12 00:57:02,202 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0))) [2023-11-12 00:57:02,202 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-11-12 00:57:02,202 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0))) [2023-11-12 00:57:02,202 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0))) [2023-11-12 00:57:02,202 INFO L899 garLoopResultBuilder]: For program point L40(lines 38 62) no Hoare annotation was computed. [2023-11-12 00:57:02,203 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0))) [2023-11-12 00:57:02,203 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:57:02,203 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0))) [2023-11-12 00:57:02,203 INFO L895 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0))) [2023-11-12 00:57:02,204 INFO L899 garLoopResultBuilder]: For program point L50(lines 47 59) no Hoare annotation was computed. [2023-11-12 00:57:02,204 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:57:02,204 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0))) [2023-11-12 00:57:02,204 INFO L895 garLoopResultBuilder]: At program point L38-3(lines 38 62) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) .cse1 .cse2 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse3 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse3 1) 0))) (and .cse1 .cse2 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)))) [2023-11-12 00:57:02,205 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (<= (* .cse1 2) |ULTIMATE.start_main_~r~0#1|) (= (select .cse2 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse1 |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse2 1) 0))) [2023-11-12 00:57:02,205 INFO L899 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2023-11-12 00:57:02,205 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0))) [2023-11-12 00:57:02,205 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2023-11-12 00:57:02,205 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0))) [2023-11-12 00:57:02,206 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0))) [2023-11-12 00:57:02,206 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-11-12 00:57:02,206 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-11-12 00:57:02,206 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-11-12 00:57:02,206 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-11-12 00:57:02,206 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-11-12 00:57:02,206 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-11-12 00:57:02,206 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-11-12 00:57:02,206 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-11-12 00:57:02,209 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:02,211 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:57:02,224 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-12 00:57:02,227 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:02,228 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-12 00:57:02,228 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:02,228 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:02,228 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:02,229 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:02,229 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:02,229 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:02,230 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-12 00:57:02,231 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:02,231 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-12 00:57:02,231 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:02,231 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:02,231 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:02,232 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:02,232 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:02,232 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:02,233 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-12 00:57:02,234 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:02,234 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-12 00:57:02,234 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:02,235 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:02,235 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:02,235 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:02,235 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:02,236 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:02,236 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-12 00:57:02,237 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:02,237 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-12 00:57:02,237 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:02,237 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:02,237 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:02,238 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:02,238 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:02,238 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:02,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:57:02 BoogieIcfgContainer [2023-11-12 00:57:02,239 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:57:02,240 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:57:02,240 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:57:02,240 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:57:02,240 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:47" (3/4) ... [2023-11-12 00:57:02,243 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:57:02,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-12 00:57:02,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-12 00:57:02,251 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-12 00:57:02,251 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-12 00:57:02,252 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 00:57:02,252 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:57:02,353 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:57:02,354 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:57:02,354 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:57:02,355 INFO L158 Benchmark]: Toolchain (without parser) took 15241.62ms. Allocated memory was 184.5MB in the beginning and 438.3MB in the end (delta: 253.8MB). Free memory was 150.7MB in the beginning and 238.1MB in the end (delta: -87.5MB). Peak memory consumption was 168.0MB. Max. memory is 16.1GB. [2023-11-12 00:57:02,355 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:57:02,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.85ms. Allocated memory is still 184.5MB. Free memory was 150.7MB in the beginning and 139.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:57:02,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.62ms. Allocated memory is still 184.5MB. Free memory was 139.8MB in the beginning and 138.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:57:02,356 INFO L158 Benchmark]: Boogie Preprocessor took 37.61ms. Allocated memory is still 184.5MB. Free memory was 138.2MB in the beginning and 136.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:57:02,357 INFO L158 Benchmark]: RCFGBuilder took 341.90ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 125.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:57:02,357 INFO L158 Benchmark]: TraceAbstraction took 14406.70ms. Allocated memory was 184.5MB in the beginning and 438.3MB in the end (delta: 253.8MB). Free memory was 124.3MB in the beginning and 242.3MB in the end (delta: -118.0MB). Peak memory consumption was 136.6MB. Max. memory is 16.1GB. [2023-11-12 00:57:02,358 INFO L158 Benchmark]: Witness Printer took 114.46ms. Allocated memory is still 438.3MB. Free memory was 242.3MB in the beginning and 238.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:57:02,360 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.85ms. Allocated memory is still 184.5MB. Free memory was 150.7MB in the beginning and 139.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.62ms. Allocated memory is still 184.5MB. Free memory was 139.8MB in the beginning and 138.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.61ms. Allocated memory is still 184.5MB. Free memory was 138.2MB in the beginning and 136.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 341.90ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 125.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14406.70ms. Allocated memory was 184.5MB in the beginning and 438.3MB in the end (delta: 253.8MB). Free memory was 124.3MB in the beginning and 242.3MB in the end (delta: -118.0MB). Peak memory consumption was 136.6MB. Max. memory is 16.1GB. * Witness Printer took 114.46ms. Allocated memory is still 438.3MB. Free memory was 242.3MB in the beginning and 238.1MB 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.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 #length[2] 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 #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 #length[2] 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 #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 #length[2] 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 #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 #length[2] 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 #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: 17]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 115 mSDsluCounter, 708 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 548 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 687 IncrementalHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 160 mSDtfsCounter, 687 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 599 GetRequests, 482 SyntacticMatches, 19 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=6, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 40 PreInvPairs, 63 NumberOfFragments, 987 HoareAnnotationTreeSize, 40 FomulaSimplifications, 300 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 1489 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 476 ConstructedInterpolants, 3 QuantifiedInterpolants, 1318 SizeOfPredicates, 34 NumberOfNonLiveVariables, 770 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 674/710 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: 1.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 29, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 16, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 25, TOOLS_POST_CALL_TIME: 0.4s, TOOLS_POST_RETURN_APPLICATIONS: 16, TOOLS_POST_RETURN_TIME: 0.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 57, TOOLS_QUANTIFIERELIM_TIME: 0.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 70, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 31, DOMAIN_JOIN_TIME: 0.3s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 29, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 16, 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: 412, DAG_COMPRESSION_RETAINED_NODES: 74, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant [2023-11-12 00:57:02,374 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-12 00:57:02,375 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:02,375 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-12 00:57:02,375 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:02,376 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:02,376 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:02,376 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:02,376 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:02,377 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:02,377 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-12 00:57:02,377 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:02,378 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-12 00:57:02,378 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:02,378 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:02,378 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:02,378 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:02,379 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:02,379 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated Derived loop invariant: (((((((0 <= x) && (x == (r + (q * y)))) && (y <= 2)) && (1 <= y)) && (1 <= r)) && ((b + x) == (((a * y) + r) + (q * y)))) && (x <= 2)) - InvariantResult [Line: 38]: Loop Invariant [2023-11-12 00:57:02,380 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-12 00:57:02,380 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:02,380 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-12 00:57:02,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:02,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:02,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:02,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:02,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:02,382 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:02,382 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-12 00:57:02,383 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:02,383 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-12 00:57:02,383 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:02,383 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:02,383 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:02,384 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:02,384 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:02,384 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated Derived loop invariant: ((((((0 <= x) && (x == (r + (q * y)))) && (y <= 2)) && (1 <= y)) && ((b + x) == (((a * y) + r) + (q * y)))) && (x <= 2)) RESULT: Ultimate proved your program to be correct! [2023-11-12 00:57:02,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd9dce33-9263-4040-b443-e0c0c622ccc5/bin/utaipan-verify-NcY6lQBIFX/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